US20160250269A1 - Feed Supplement and a Feed Composition Comprising Resin Acid Based Composition - Google Patents

Feed Supplement and a Feed Composition Comprising Resin Acid Based Composition Download PDF

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US20160250269A1
US20160250269A1 US15/150,561 US201615150561A US2016250269A1 US 20160250269 A1 US20160250269 A1 US 20160250269A1 US 201615150561 A US201615150561 A US 201615150561A US 2016250269 A1 US2016250269 A1 US 2016250269A1
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resin
based composition
acid based
use according
resin acid
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Mikko Rintola
Juha Orte
Juhani Vuorenmaa
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Forchem Oyj
Hankkija Oy
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Forchem Oyj
Hankkija Oy
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K36/00—Medicinal preparations of undetermined constitution containing material from algae, lichens, fungi or plants, or derivatives thereof, e.g. traditional herbal medicines
    • A61K36/13—Coniferophyta (gymnosperms)
    • A61K36/15—Pinaceae (Pine family), e.g. pine or cedar
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23K—FODDER
    • A23K10/00—Animal feeding-stuffs
    • A23K10/30—Animal feeding-stuffs from material of plant origin, e.g. roots, seeds or hay; from material of fungal origin, e.g. mushrooms
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23K—FODDER
    • A23K20/00—Accessory food factors for animal feeding-stuffs
    • A23K20/10—Organic substances
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23K—FODDER
    • A23K20/00—Accessory food factors for animal feeding-stuffs
    • A23K20/10—Organic substances
    • A23K20/105—Aliphatic or alicyclic compounds
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23K—FODDER
    • A23K20/00—Accessory food factors for animal feeding-stuffs
    • A23K20/10—Organic substances
    • A23K20/158—Fatty acids; Fats; Products containing oils or fats
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23K—FODDER
    • A23K50/00—Feeding-stuffs specially adapted for particular animals
    • A23K50/10—Feeding-stuffs specially adapted for particular animals for ruminants
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23K—FODDER
    • A23K50/00—Feeding-stuffs specially adapted for particular animals
    • A23K50/70—Feeding-stuffs specially adapted for particular animals for birds
    • A23K50/75—Feeding-stuffs specially adapted for particular animals for birds for poultry
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L29/00—Foods or foodstuffs containing additives; Preparation or treatment thereof
    • A23L29/03—Organic compounds
    • A23L29/035—Organic compounds containing oxygen as heteroatom
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L33/00—Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof
    • A23L33/10—Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof using additives
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L33/00—Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof
    • A23L33/10—Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof using additives
    • A23L33/105—Plant extracts, their artificial duplicates or their derivatives
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/185—Acids; Anhydrides, halides or salts thereof, e.g. sulfur acids, imidic, hydrazonic or hydroximic acids
    • A61K31/19—Carboxylic acids, e.g. valproic acid
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/185—Acids; Anhydrides, halides or salts thereof, e.g. sulfur acids, imidic, hydrazonic or hydroximic acids
    • A61K31/19—Carboxylic acids, e.g. valproic acid
    • A61K31/192—Carboxylic acids, e.g. valproic acid having aromatic groups, e.g. sulindac, 2-aryl-propionic acids, ethacrynic acid 
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K36/00—Medicinal preparations of undetermined constitution containing material from algae, lichens, fungi or plants, or derivatives thereof, e.g. traditional herbal medicines
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00—Medicinal preparations characterised by special physical form
    • A61K9/0012—Galenical forms characterised by the site of application
    • A61K9/0053—Mouth and digestive tract, i.e. intraoral and peroral administration
    • A61K9/0056—Mouth soluble or dispersible forms; Suckable, eatable, chewable coherent forms; Forms rapidly disintegrating in the mouth; Lozenges; Lollipops; Bite capsules; Baked products; Baits or other oral forms for animals
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P1/00—Drugs for disorders of the alimentary tract or the digestive system
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P1/00—Drugs for disorders of the alimentary tract or the digestive system
    • A61P1/04—Drugs for disorders of the alimentary tract or the digestive system for ulcers, gastritis or reflux esophagitis, e.g. antacids, inhibitors of acid secretion, mucosal protectants
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23V—INDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
    • A23V2002/00—Food compositions, function of food ingredients or processes for food or foodstuffs
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
    • Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
    • Y02P60/22—Methane [CH4], e.g. from rice paddies

Definitions

  • the invention relates to a feed supplement and a feed composition comprising resin acid based composition and to an use of the feed supplement.
  • Imbalances in microbial populations and growth of harmful bacteria in the digestive tract of animals can cause significant losses in animal growth and production. These imbalances manifest themselves as intestinal disorders such as diarrhea. While microbial infections of animals have been prevented by the use of e.g. antibiotics and other agents that prevent the growth of microorganisms, stricter regulations on their use are expected. Ruminant animals can utilize fiber-rich raw materials which have little or no nutritional value for monogastrics like the human. However, the feed conversion efficiency of ruminants is relatively low and their methane production represents a remarkable share of the world's greenhouse gas emissions. With the increasing demand of food there is a need to improve the feed conversion efficiency of ruminants and to lower their methane production. Generally, there is an increasing demand for ingredients for use in animal feeding that can modulate the microbial population in the animal digestive tract but which are readily available, well tolerated and environmentally friendly.
  • TOFA tall oil fatty acid
  • DTO Distilled Tall Oil
  • TOR Tall Oil Rosin
  • Toxins are poisonous substances produced within living cells or organisms.
  • Toxins such as mycotoxins are a chemically variable group of secondary metabolites of fungi, which can be found in grains and other feedstuffs even in the absence of any visible fungal growth.
  • High temperature and air humidity during the storage increase the likelihood of fungal growth, but mycotoxin contamination can also occur already in the field.
  • Visible appearance or smell of grains or silage does not indicate the presence or absence of mycotoxin contamination.
  • Effects of toxins such as mycotoxins to farm animals are very variable, and range from increased mortality to decreased fertility and performance. Mycotoxins may also disturb the immune system of animals and make them more susceptible to diseases.
  • mycotoxin adsorbents are often used to give extra insurance against mycotoxin contamination in feeds.
  • Mycotoxin adsorbents are substances that are itself not digested or absorbed by the animal. They are assumed to bind toxins during the passage through the alimentary canal. Thus, instead of being absorbed by the animals, the toxins get eventually voided via feces.
  • Toxin binders can also adsorb other types of toxins, like bacterial toxins or secondary metabolites of plants from the digestive tract.
  • Activated carbon (charcoal) is an efficient toxin binder. It is a recommended general toxin binder in various poisonings. However, charcoal also binds vitamins and minerals, which makes it unsuitable for continuous use in feeds.
  • the purpose of the invention is to provide a new type of feed supplement comprising resin acid based composition for use in the prevention of growth of harmful bacteria in the animal digestive tract, in the prevention of intestinal disorders, in the modulation of microbial population of the animal digestive tract, in enhancing rumen fermentation, lowering rumen methane production and/or in binding toxins.
  • the feed supplement according to the present invention is characterized by what is presented in claim 1 .
  • the feed composition according to the present invention is characterized by what is presented in claim 39 .
  • FIG. 1 The turbidity change during 8 hours of Cl. perfringens growth as a response to a Tall Oil Rosin (TOR) and Distilled Tall Oil (DTO).
  • TOR Tall Oil Rosin
  • DTO Distilled Tall Oil
  • FIG. 2 Gas production during 8 hours by Cl. perfringens growth as a response to Tall Oil Rosin (TOR) and Distilled Tall Oil (DTO).
  • TOR Tall Oil Rosin
  • DTO Distilled Tall Oil
  • the present invention is based on the realization that a feed supplement which comprises resin acid based composition can be used in the prevention of growth of harmful bacteria in the animal digestive tract, in the modulation of microbial population of the animal digestive tract, in the prevention of intestinal disorders, in enhancing rumen fermentation, lowering rumen methane production and/or in binding toxins.
  • Resin acids are present in coniferous trees, and there are three main species of resin acid products, namely Tall Oil Rosin (TOR), Wood Rosin and GUM Rosin.
  • TOR is the resin acid fraction separated by vacuum distillation from Crude Tall Oil (CTO) which is produced by the preparation of pulp. CTO is obtained via acidulation of Crude Tall Oil Soap or Crude Sulphate Soap (TOS). TOS is separated from cooking liquid in pulp mill often called black liqueur during pulping process.
  • Wood Rosin is the fraction separated by steam distillation or other means from dead trees, tree stumps, branches etc.
  • GUM Rosin is the resin fraction that has been steam distilled or separated by other means from resin harvested often called tapping from a living tree.
  • GUM resin is widely produced in China, Indonesia and Brazil. Wood rosin mainly comes from the USA. TOR is produced in the USA and Scandinavia and to a lesser extent in Central Europe, New Zealand and Russia. Substances containing resin acid and obtained by vacuum distillation from crude tall oil include Distilled Tall Oil (DTO), Tall Oil Fatty Acid (TOFA) and Tall Oil Pitch (TOP). DTO contains 10-40% resin acids. CTO typically contains 15-70% resin acids, and the lowest resin acid contents are generally provided by the cooking of mixed wood pulp.
  • DTO Distilled Tall Oil
  • TOFA Tall Oil Fatty Acid
  • TOP Tall Oil Pitch
  • Tall Oil Rosin or “TOR” should be understood as referring to a composition obtained by distillation of crude tall oil and further refinement of distilled tall oil. TOR typically comprises 60-99% (w/w) resin acids.
  • Wood Rosin should be understood as referring to a composition obtained by distillation or other means from dead trees, tree stumps, branches etc. Wood Rosin typically comprises 50-99% (w/w) resin acids.
  • GUM Rosin should be understood as referring to a composition obtained by distillation or separated by other means from resin harvested from a living tree. GUM Rosin typically comprises 50-99% (w/w) resin acids.
  • DTO Dishilled Tall Oil
  • DTO typically comprises 10-60% (w/w) resin acids.
  • the resin acid based composition TOR, Wood Rosin, GUM Rosin, CTO, TOS and DTO can also be produced by mixing one or more resin acid compositions and one or more fatty acid compositions in form of oils or fats.
  • Produced resin acid derivatives are for example esters, ethers or alkali metal salts.
  • Resin acids are known to have antimicrobial, including antibacterial, properties.
  • the feed supplement of the present invention comprises a resin acid based composition which comprises over 10% (w/w) of resin acids.
  • the feed supplement comprises a resin acid based composition which comprises over 12% (w/w) resin acids.
  • the feed supplement is effective in the prevention of growth of harmful bacteria, for prevention of intestinal disorders, in the modulation of microbial population of the animal digestive tract, in enhancing rumen fermentation, lowering rumen methane production and/or in binding toxins.
  • the feed supplement comprising a resin acid based composition is for use in the prevention of growth of harmful bacteria and/or in the prevention of intestinal disorders.
  • the feed supplement comprising a resin acid based composition is used in the modulation of microbial population of the animal digestive tract.
  • the feed supplement is used for improving feed utilization. In one embodiment the feed supplement is used for improving the feed conversion ratio.
  • the feed supplement comprising a resin acid based composition is used in enhancing rumen fermentation and/or lowering rumen methane production.
  • the feed supplement comprising a resin acid based composition is used in binding toxins.
  • the feed supplement comprising a resin acid based composition is used in binding mycotoxins.
  • feed supplement should be understood as referring to a composition that may be added to a feed or used as such in the feeding of animals.
  • resin acids should be understood as referring to a complex mixture of various acidic compounds derived from wood, specially pine wood. They can also be modified resin acids such as dimers and decarboxylated resin acids.
  • the exact composition of the resin acids present in the resin acid based composition varies e.g. according to the species of the trees the composition is obtained from and the processing conditions under which it is manufactured.
  • Resin acids typically include compounds such as abietic acid, dehydroabietic acid, levopimaric acid, neoabietic acid, pimaric acid and isopimaric acid, only to mention a few.
  • the resin acid based composition may be any composition described in this specification.
  • the resin acid based composition of the feed supplement comprises at least one of following resin acids abietic acid, dehydoabietic acid, palustric acid, neoabietic acid, pimaric acid and isopimaric acid and/or derivatives thereof.
  • the derivatives are obtained by modifying the resin acid chemically, biologically or other ways.
  • the resin acid based composition comprises at least one of following resin acids abietic acid, dehydoabietic acid, palustric acid, neoabietic acid, pimaric acid and isopimaric acid.
  • the resin acid based composition comprises at least one chemically modified resin acid of abietic acid, dehydoabietic acid, palustric acid, neoabietic acid, pimaric acid and isopimaric acid.
  • the resin acid based composition may also be a mixture of unmodified and modified resin acids.
  • the resin acid based composition is Tall Oil Rosin (TOR).
  • the resin acid based composition and/or TOR comprises over 60% (w/w) resin acids. In one embodiment of the present invention the resin acid based composition and/or TOR comprises over 85% (w/w) resin acids.
  • the TOR can comprise 32-44.5% abietic acid, 18-25% dehydoabietic acid, 0-3% dihydoabietic acid, 3.0-11.5% isopimaric acid, 0-1.5% 8,5-isopimaric acid, 0-2.5% levopimaric acid, 3.3-4% neobietic acid, 7.5-10% palustric acid, 3-4.5% pimaric acid and 0-4.0% sandaropimaric acid.
  • TOR may comprise ⁇ 0.1% dimers and 0-7% other components.
  • the resin acid based composition is Wood Rosin.
  • the resin acid based composition and/or Wood Rosin comprises over 10 and up to 99% (w/w) resin acids. In one embodiment of the present invention the resin acid based composition and/or Wood Rosin comprises 50-99% (w/w) resin acids.
  • the Wood Rosin can comprise 45-51% abietic acid, 7.9-8.5% dehydoabietic acid, 0-1% dihydoabietic acid, 11-15.5% isopimaric acid, 0-4.2% 8,5-isopimaric acid, 0-0.2% levopimaric acid, 4.7-7% neobietic acid, 8.2-10% palustric acid, 3-7.1% pimaric acid and 0-2.0% sandaropimaric acid. Wood Rosin may comprise 0-4.2% dimers and 0-1% other components.
  • the resin acid based composition is GUM Rosin.
  • the resin acid based composition and/or GUM Rosin comprises over 10 and up to 99% (w/w) resin acids. In one embodiment of the present invention the resin acid based composition and/or GUM Rosin comprises 50-99% (w/w) resin acids.
  • the GUM Rosin can comprise 15-45% abietic acid, 3-15% dehydoabietic acid, 0-0.6% dihydoabietic acid, 3.6-28% isopimaric acid, 0-0.3% 8,5-isopimaric acid, 0-1.8% levopimaric acid, 10-19% neobietic acid, 5-25% palustric acid, 2-7.4% pimaric acid and 0-1.5% sandaropimaric acid.
  • GUM Rosin may comprise 0-1.0% dimers and 0-3.5% other components.
  • the resin acid based composition is Distilled Tall Oil (DTO). In one embodiment of the present invention the resin acid based composition is a distillation fraction of Tall Oil. In one embodiment of the present invention the resin acid based composition is a mixture of DTO and a distillation fraction of Tall Oil.
  • the Distillation fraction of Tall Oil is any resin acids containing fraction of CTO available during CTO refining.
  • the resin acid based composition and/or DTO comprises over 10 and up to 60% (w/w) resin acids. In one embodiment of the present invention the resin acid based composition and/or DTO comprises over 10 and up to 40% (w/w) resin acids.
  • the resin acid based composition is separated from black liqueur during pulping process or TOS or CTO.
  • the resin acids of the resin acid based composition are insoluble in water.
  • the resin acids of the resin acid based composition may be unmodified or modified.
  • the resin acids of the resin acid based composition and the feed supplement are unmodified.
  • the term “unmodified” should be understood as referring to the resin acid based composition comprising over 10% (w/w) resin acids that is not modified, i.e. treated chemically, or biologically.
  • the feed supplement comprising the resin acid based composition may be used as such.
  • the resin acids of the resin acid based composition are chemically, biologically or other ways modified resin acid compositions.
  • the chemical and/or biological modification of resin acids of the resin acid based composition improves the solubility of its components and resin acids in the digestive tract of an animal.
  • the resin acid based composition may be chemically modified e.g. partially or totally hydrogenated, disportinated, isomerized, oxidized, polymerized, etherified, saponified and/or esterified with suitable compounds, for example, fatty alcohols, glycol, glycerol or glyceridic fatty acid compounds such as monodi- and tri- and polyglycerides or sugar or polyol based esters. They may be also used as a reactant in Diels-Alder reaction.
  • the feed supplement comprises a resin acid based composition which is modified by saponification.
  • the resin acid based composition for use according to the present invention is modified by etherification.
  • the resin acid based composition of the feed supplement comprises 1-90 (w/w) fatty acids and/or their derivatives.
  • the fatty acids may be in form of oils or fats or in other forms like free fatty acids or esters, ethers or alkali metal salts or fatty alcohols.
  • the resin acid based composition includes unsaponifiables which have not an acid group, for example, lipophilic neutral substances and esters from wood. In one embodiment of the present invention, the resin acid based composition includes less than 15% unsaponifiables. The amount of unsaponifiables is typically in DTO products less than 5% and in TOR, Wood and GUM Rosin less than 6%.
  • the feed supplement comprises resin acid based composition which is dried.
  • the resin acid based composition can be dried by spray drying, drum drying or by any other known suitable drying method.
  • the feed supplement comprises different active ingredients.
  • the feed supplement may be added in the feed in a concentration of 0.0001-10 kg//ton of dry weight of the total amount of the feed.
  • the feed supplement comprising the resin acid based composition according to the invention may be added to the feed or feed supplement as such, or it may in general be further processed as desired.
  • the feed supplement comprising resin acid based composition according to the present invention can be modified into a form which is functional and effective in feeds.
  • Carriers such as oil, fatty acids can be added to the composition for improving the functionality.
  • Further emulgators such as glycerols, lecithin etc. can be added to the resin acid based composition for improving the solubility.
  • the feed supplement comprising the resin acid based composition according to the present invention may comprise chemically modified resin acid derivatives
  • the resin acid derivatives could also comprise rosin based acid anhydrides, dimers, amines, maleimides, alkenyls, epoxy compositions and/or mixtures thereof or with other suitable chemically modified resin acids known to person skilled in the art.
  • the feed supplement comprises resin acid based composition which is absorbed into a carrier material suitable for the feed composition such as sugarbeet pulp.
  • the feed supplement comprises resin acid based composition which is mixed with a liquid carrier material suitable for the feed composition such as vegetable oils or fatty acids.
  • the feed supplement comprising the resin acid based composition according to the invention may be added to the feed, or it may be administered to an animal separately (i.e. not as a part of any feed composition).
  • feed composition or “feed” should be understood as referring to the total feed composition of an animal diet or to a part thereof, including e.g. supplemental feed, premixes and other feed compositions.
  • the feed may comprise different active ingredients.
  • the present invention also relates to a feed composition comprising the feed supplement according to the invention.
  • the feed composition comprises the feed supplement in an amount of 0.00001-1.0% (w/w of the dry weight of the total amount of the feed.
  • the present invention also relates to a use of the feed supplement according the present invention in a feed composition.
  • the invention also relates to a method of preventing the growth of harmful bacteria in the animal digestive tract, comprising the step of administering to an animal the feed supplement comprising the resin acid based composition according to the invention.
  • the invention also relates to a use of the feed supplement comprising the resin acid based composition comprising over 10% (w/w) resin acids in modulating microbial population of the animal digestive tract, preventing intestinal disorders, in enhancing rumen fermentation, lowering rumen methane production and/or binding toxins.
  • the term “harmful bacteria” should be understood as referring to any bacteria that is capable of affecting the digestive tract or health of an animal in an adverse manner, including competition for nutrients with the host animal.
  • the term “microbial population” should be understood as referring to the microorganisms that inhabit the digestive tract, including the Bacteria and Archaea domains and microscopic members of the Eukaryote domain and also intestinal parasites. The microbial population will vary for different animal species depending on e.g. the health of an animal and on environmental factors.
  • intestinal disorder should be understood as referring to various disorders of the digestive tract in an animal, including e.g. diarrhea and other intestinal health problems.
  • animal should be understood as referring to all kinds of different animals, such as monogastric animals, ruminants, fur animals, pets and aquaculture.
  • animals including offspring, are cows, beef cattle, pigs, poultry, sheep, goats, horses, foxes, dogs, cats and fish.
  • toxin should be understood as referring to any poisonous substance produced within living cells or organisms.
  • Toxins are products of plants, animals, microorganisms, for example bacteria, viruses, fungi, rickettsiae, protozoa, etc.
  • mycotoxin should be understood as referring to a toxic secondary metabolite produced by fungi, such as yeast and mould.
  • the most common mycotoxins in grains or silage are for example aflatoxins, zearalenone, ochratoxin A, deoxynivalenol, fumonisin and T-2 toxin.
  • the toxins will vary depending on environmental factors.
  • the resin acid based composition is administered to an animal in an effective amount.
  • the feed supplement comprising the resin acid based composition comprising over 10% (w/w) resin acids is effective in the prevention of growth of harmful bacteria in the animal digestive tract, in the prevention of intestinal disorders, in the modulation of microbial population of the animal digestive tract, in enhancing rumen fermentation, lowering rumen methane production and/or in binding toxins. They have potential in toxin binding.
  • the present invention has a number of advantages.
  • the feed supplement comprising the resin acid based composition is a readily available, natural, low-cost and environmentally friendly material. Further, it is non-toxic and well tolerated.
  • the feed supplement comprising the resin acid based composition can be used as such.
  • the invention is effective in modulating the composition of the microbiota in the animal digestive tract to a direction that is beneficial for animal performance. Subsequently, other benefits of the invention are e.g. improved animal health and productivity, higher product quality, uniformity, nutritional value and food and product safety, lower costs per production unit and decreased environmental loads.
  • the invention allows the production of feed compositions and supplements at low cost.
  • a product, a method or a use, to which the invention is related, may comprise at least one of the embodiments of the invention described hereinbefore.
  • Clostridium perfringens is a pathogenic bacterium that causes necrotic enteritis in broiler chicks and other species of poultry. This experiment was conducted to study the inhibition of Cl. perfringens by the resin acid based compositions.
  • TOR Tall Oil Rosin
  • DTO Distilled Tall Oil
  • Test compounds TOR (free resin acids 88%) 0.03 g of 1:1 in turnip rape oil DTO (free resin acids 27.5%) 0.015 g TOR (free resin acids 88%) 0.15 ml of 10% stock solution in ethanol DTO (free resin acids 27.5%) 0.15 ml of 10% stock solution in ethanol TOR (free resin acids 88%) 0.15 ml of 1% stock solution in ethanol DTO (free resin acids 27.5%) 0.15 ml of 1% stock solution in ethanol ethanol 0.15 ml ethanol
  • test compositions were tested in a Cl. perfringens growth inhibition test that measures both the turbidity of the clostridial culture medium as a result of increased number of bacterial cells in a unit volume of medium, and the cumulative gas production during the simulation.
  • the efficiency of TOR and DTO against the growth of Cl. perfringens was tested at concentrations 0.01%.
  • the TOR with 88% resin acid was melted at +105° C. and mixed 1:1 in turnip rape oil, in order to achieve the same runny form as the other two oily products. This diluted product was dosed as double amount in the simulation.
  • the simulation was conducted in 25-ml glass bottles containing 15 ml of sterile anaerobic TSGY-media (tryptic soy broth-yeast extract media with glucose) and the bottles were enclosed with air-tight stoppers to ensure anaerobic conditions throughout the experiment.
  • TSGY-media tryptic soy broth-yeast extract media with glucose
  • 0.1% inoculums of the overnight grown Cl. perfringens culture was injected to TSGY-bottles.
  • Test compounds, or sterile deionized water for the control treatment were added in a 150 ⁇ l final volume from the respective stock solution according to the treatment.
  • the simulation bottles were randomized to avoid artificial bias between treatments.
  • the bottles were kept at an even 37° C. temperature and mixed 1 min before the turbidity measurement at each time point.
  • the total simulation time was 8 h.
  • the optical density was measured at the time points of 0.5, 4 and 8 hours.
  • the turbidity (optical density, OD) of growth media increases proportionally as the Cl. perfringens cell number and cell density increases.
  • FIGS. 1 and 2 The results are illustrated in FIGS. 1 and 2 .
  • the TOR and DTO treatments very effectively inhibited the growth of Cl. perfringens , which was detected as the lack of turbidity change ( FIG. 1 ) and the production of negligible amounts of gas ( FIG. 2 ).
  • TOR and DTO compositions inhibited the growth of Clostridium perfringens very efficiently regardless of the rosin acid concentration
  • the TOR composition contained 88% (w/w) resin acids and the DTO composition contained 27.5% (w/w) resin acids.
  • the TOR composition containing 88% (w/w) resin acids was mixed 1:1 with turnip rape oil.
  • the methane inhibition test was conducted with rumen-fistulated dairy cows in order to study the potential of TOR and DTO to decrease the rate of methane production in the rumen. Rumen fluid samples were measured for the numbers of methanogenic bacteria, as they are the methane-producing organisms. The short chain fatty acid profiles, including the concentration of branched chain fatty acids, of the samples were measured as they indicate whether resin based acid compositions had effects to ruminal fermentation.
  • TOR and DTO compositions were first dried onto sugar beet pulp and then mixed into the compound feed. Rumen samples were taken before the dietary intervention, once a week during the test composition feeding, and after a two-week washout period. The samples of the trial were analysed for short chain fatty acids (SCFAs) by gas chromatography and numbers of methanogens, protozoa and total bacteria by qPCR.
  • SCFAs short chain fatty acids
  • the results show that the numbers of methane producing bacteria decreased numerically during the TOR and DTO feeding period, while protozoa and the total number of bacteria were not affected by the product.
  • the levels of lactic, propionic, and valeric acids and total short chain fatty acids tended to decrease in the rumen fluid during the TOR and the DTO feeding period.
  • the concentration and relative proportion of branched chain fatty acids tended to decrease as a response to TOR and the DTO.
  • the experiment shows that the TOR and the DTO lowers the amount of methanogens and thus lowers rumen methane production.
  • the experiment also shows that the TOR and the DTO enhances rumen fermentation.
  • the saponified DTO was manufactured by adding NaOH (sodium hydroxide) to DTO, adding enough water to adjust the total dry matter (DTO) percentage of the mixture to 18-20%, heating the mixture to +90° C., keeping the temperature at +90° C. for 120 minutes, during which time the mixture was gently stirred at 15 min intervals.
  • NaOH sodium hydroxide
  • Ileal contents of 40-days old broiler chicks were used for the simulation media and as inoculants in the simulation models.
  • the trial treatments were prepared from a batch of saponified DTO.
  • Part of the liquid DTO soap and the carrier-absorbed DTO soap was digested by a pepsin-HCl-treatment (pH 2.25) followed by a pancreatin bile-acid-NaOH treatment (pH 6.2) in a dilution series. The digestion was made to evaluate whether the products would resist the conditions of the upper gastrointestinal tract before they enter the distal intestine with higher microbial activity.
  • the simulation was conducted in a total of 160 2-ml plastic microcentrifuge vials, in 1.5 ml volume, with 10 hours simulation time. Samples were tested at four concentrations of the dry matter of DTO: 0%, 0.005%, 0.01%, 0.01% and 1%.
  • simulation samples were analysed for short chain fatty acids and the total number of microbes.
  • selected samples were analysed for a number of microbial species or groups by quantitative real-time PCR (qPCR).
  • Ileal simulation samples were analysed for lactobacilli and streptococci.
  • test product The capacity of a test product to remove toxins from aqueous medium was measured in this test.
  • An efficient toxin adsorbent should be able to bind the toxin in all compartments of the digestive tract, to inhibit the toxin from getting absorbed by the animal.
  • pH value 2.5 50 mM glycine-HCl buffer.
  • the test product was a saponified DTO product which contains 20% resin acids.
  • the saponified DTO was manufactured as in example 3.
  • the product tested was the saponified DTO (20%) with or without silicate carrier.
  • test A was conducted with two toxins Ochratoxin A (OTA) and Zearalenone (ZEA), at pH-value 2.5, three test substance levels 0.2, 0.5 and 1 kg/ton and four replicate samples per treatment. Control treatment was replicated 8 times.
  • OTA Ochratoxin A
  • ZAA Zearalenone
  • Mycotoxins OTA and ZEA were available as 3H-labeled pure compounds, and radioactivity, measured by liquid scintillation counting, was used for their quantification in the samples.
  • the experiment was conducted in silanized glass vials in 1 ml volume of buffer.
  • the bound radioactive toxin becomes removed from the liquid phase through co-pelleting with the insoluble components of the potential binder.
  • the following procedure was used: 1. The test products were weighed into the vials, 2. 3H-labeled and intact mycotoxin was mixed with the buffers to get the final toxin concentration of 10 ⁇ g/l, 3. 1 ml of the buffer-mycotoxin solution was added to the vials, 4. The vials were sealed and kept for 2 hours at 37° C. in constant slow shaking, 5. The vials were centrifuged for 10 min at 3000 ⁇ g 6.
  • the saponified DTO was able to bind OTA from the aqueous medium statistically significantly, and the binding was dependent on the concentration of the test product.
  • the saponified DTO adsorbed 25-60% of the free OTA from the medium.
  • the saponified DTO significantly decreased the amount of free ZEA even at the lowest dosages.
  • the saponified DTO removed approximately 30-60% of the free toxin.

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Abstract

The present invention relates to a feed supplement which comprises a resin acid based composition comprising over 10% (w/w) resin acids for use in the prevention of growth of harmful bacteria in the animal digestive tract, in the prevention of intestinal disorders, in the modulation of microbial population of the animal digestive tract, in enhancing rumen fermentation, lowering rumen methane production and/or in binding toxins. The invention further relates to a use of the feed supplement and a feed composition comprising the feed supplement.

Description

    FIELD OF THE INVENTION
  • The invention relates to a feed supplement and a feed composition comprising resin acid based composition and to an use of the feed supplement.
    • BACKGROUND OF THE INVENTION
  • Imbalances in microbial populations and growth of harmful bacteria in the digestive tract of animals can cause significant losses in animal growth and production. These imbalances manifest themselves as intestinal disorders such as diarrhea. While microbial infections of animals have been prevented by the use of e.g. antibiotics and other agents that prevent the growth of microorganisms, stricter regulations on their use are expected. Ruminant animals can utilize fiber-rich raw materials which have little or no nutritional value for monogastrics like the human. However, the feed conversion efficiency of ruminants is relatively low and their methane production represents a remarkable share of the world's greenhouse gas emissions. With the increasing demand of food there is a need to improve the feed conversion efficiency of ruminants and to lower their methane production. Generally, there is an increasing demand for ingredients for use in animal feeding that can modulate the microbial population in the animal digestive tract but which are readily available, well tolerated and environmentally friendly.
  • Fractional distillation of crude tall oil (CTO), obtained as a by-product of the Kraft process of wood pulp manufacture, produces depitched tall oil which typically comprises over 10% resin acids and less than 90% fatty acids. Further refinement of depitched tall oil produces tall oil fatty acid (TOFA), Distilled Tall Oil (DTO) and Tall Oil Rosin (TOR) which are available in a variety of compositions differing in the fatty acids and resin acids content. Because TOFA is an inexpensive source of fatty acids, it has previously been used in animal nutrition as an energy source. For instance, GB 955316 discloses the use of alkali metal salts of tall oil fatty acids to improve weight gain and nitrogen retention in ruminant animals.
  • Toxins are poisonous substances produced within living cells or organisms. Toxins such as mycotoxins are a chemically variable group of secondary metabolites of fungi, which can be found in grains and other feedstuffs even in the absence of any visible fungal growth. High temperature and air humidity during the storage increase the likelihood of fungal growth, but mycotoxin contamination can also occur already in the field. Visible appearance or smell of grains or silage does not indicate the presence or absence of mycotoxin contamination. Effects of toxins such as mycotoxins to farm animals are very variable, and range from increased mortality to decreased fertility and performance. Mycotoxins may also disturb the immune system of animals and make them more susceptible to diseases.
  • Due to the chemical variability of mycotoxins, analysis of all feedlots for even the most common mycotoxins would be too expensive. Therefore mycotoxin adsorbents are often used to give extra insurance against mycotoxin contamination in feeds. Mycotoxin adsorbents are substances that are itself not digested or absorbed by the animal. They are assumed to bind toxins during the passage through the alimentary canal. Thus, instead of being absorbed by the animals, the toxins get eventually voided via feces.
  • Toxin binders can also adsorb other types of toxins, like bacterial toxins or secondary metabolites of plants from the digestive tract. Activated carbon (charcoal) is an efficient toxin binder. It is a recommended general toxin binder in various poisonings. However, charcoal also binds vitamins and minerals, which makes it unsuitable for continuous use in feeds.
    • PURPOSE OF THE INVENTION
  • The purpose of the invention is to provide a new type of feed supplement comprising resin acid based composition for use in the prevention of growth of harmful bacteria in the animal digestive tract, in the prevention of intestinal disorders, in the modulation of microbial population of the animal digestive tract, in enhancing rumen fermentation, lowering rumen methane production and/or in binding toxins.
    • SUMMARY
  • The feed supplement according to the present invention is characterized by what is presented in claim 1.
  • The use of the feed supplement according to the present invention is characterized by what is presented in claim 3.
  • The use of the feed supplement according to the present invention is characterized by what is presented in claim 6.
  • The use of the feed supplement according to the present invention is characterized by what is presented in claim 7.
  • The feed composition according to the present invention is characterized by what is presented in claim 39.
  • The use of the feed supplement according to the present invention is characterized by what is presented in claim 41.
    • DETAILED DESCRIPTION OF THE INVENTION
  • FIG. 1 The turbidity change during 8 hours of Cl. perfringens growth as a response to a Tall Oil Rosin (TOR) and Distilled Tall Oil (DTO).
  • FIG. 2 Gas production during 8 hours by Cl. perfringens growth as a response to Tall Oil Rosin (TOR) and Distilled Tall Oil (DTO).
    •
  • The present invention is based on the realization that a feed supplement which comprises resin acid based composition can be used in the prevention of growth of harmful bacteria in the animal digestive tract, in the modulation of microbial population of the animal digestive tract, in the prevention of intestinal disorders, in enhancing rumen fermentation, lowering rumen methane production and/or in binding toxins.
  • Resin acids are present in coniferous trees, and there are three main species of resin acid products, namely Tall Oil Rosin (TOR), Wood Rosin and GUM Rosin. TOR is the resin acid fraction separated by vacuum distillation from Crude Tall Oil (CTO) which is produced by the preparation of pulp. CTO is obtained via acidulation of Crude Tall Oil Soap or Crude Sulphate Soap (TOS). TOS is separated from cooking liquid in pulp mill often called black liqueur during pulping process. Wood Rosin is the fraction separated by steam distillation or other means from dead trees, tree stumps, branches etc. and GUM Rosin is the resin fraction that has been steam distilled or separated by other means from resin harvested often called tapping from a living tree.
  • GUM resin is widely produced in China, Indonesia and Brazil. Wood rosin mainly comes from the USA. TOR is produced in the USA and Scandinavia and to a lesser extent in Central Europe, New Zealand and Russia. Substances containing resin acid and obtained by vacuum distillation from crude tall oil include Distilled Tall Oil (DTO), Tall Oil Fatty Acid (TOFA) and Tall Oil Pitch (TOP). DTO contains 10-40% resin acids. CTO typically contains 15-70% resin acids, and the lowest resin acid contents are generally provided by the cooking of mixed wood pulp.
  • The term “Tall Oil Rosin” or “TOR” should be understood as referring to a composition obtained by distillation of crude tall oil and further refinement of distilled tall oil. TOR typically comprises 60-99% (w/w) resin acids.
  • The term “Wood Rosin” should be understood as referring to a composition obtained by distillation or other means from dead trees, tree stumps, branches etc. Wood Rosin typically comprises 50-99% (w/w) resin acids.
  • The term “GUM Rosin” should be understood as referring to a composition obtained by distillation or separated by other means from resin harvested from a living tree. GUM Rosin typically comprises 50-99% (w/w) resin acids.
  • The term “Distilled Tall Oil” or “DTO” should be understood as referring to a composition obtained by distillation of crude tall oil and further refinement of distilled tall oil. DTO typically comprises 10-60% (w/w) resin acids.
  • The resin acid based composition TOR, Wood Rosin, GUM Rosin, CTO, TOS and DTO can also be produced by mixing one or more resin acid compositions and one or more fatty acid compositions in form of oils or fats. Produced resin acid derivatives are for example esters, ethers or alkali metal salts.
  • Resin acids are known to have antimicrobial, including antibacterial, properties.
  • The feed supplement of the present invention comprises a resin acid based composition which comprises over 10% (w/w) of resin acids.
  • In one embodiment of the present invention, the feed supplement comprises a resin acid based composition which comprises over 12% (w/w) resin acids.
  • In one embodiment of the present invention, the feed supplement is effective in the prevention of growth of harmful bacteria, for prevention of intestinal disorders, in the modulation of microbial population of the animal digestive tract, in enhancing rumen fermentation, lowering rumen methane production and/or in binding toxins.
  • In one embodiment of the present invention, the feed supplement comprising a resin acid based composition is for use in the prevention of growth of harmful bacteria and/or in the prevention of intestinal disorders.
  • In one embodiment of the present invention, the feed supplement comprising a resin acid based composition is used in the modulation of microbial population of the animal digestive tract.
  • In one embodiment the feed supplement is used for improving feed utilization. In one embodiment the feed supplement is used for improving the feed conversion ratio.
  • In one embodiment of the present invention, the feed supplement comprising a resin acid based composition is used in enhancing rumen fermentation and/or lowering rumen methane production.
  • In one embodiment of the present invention, the feed supplement comprising a resin acid based composition is used in binding toxins.
  • In one embodiment, the feed supplement comprising a resin acid based composition is used in binding mycotoxins.
  • In this context, the term “feed supplement” should be understood as referring to a composition that may be added to a feed or used as such in the feeding of animals.
  • In this context, the term “resin acids” should be understood as referring to a complex mixture of various acidic compounds derived from wood, specially pine wood. They can also be modified resin acids such as dimers and decarboxylated resin acids. The exact composition of the resin acids present in the resin acid based composition varies e.g. according to the species of the trees the composition is obtained from and the processing conditions under which it is manufactured. Resin acids typically include compounds such as abietic acid, dehydroabietic acid, levopimaric acid, neoabietic acid, pimaric acid and isopimaric acid, only to mention a few.
  • In the context of the feed additive, the resin acid based composition may be any composition described in this specification.
  • In one embodiment of the present invention the resin acid based composition of the feed supplement comprises at least one of following resin acids abietic acid, dehydoabietic acid, palustric acid, neoabietic acid, pimaric acid and isopimaric acid and/or derivatives thereof. The derivatives are obtained by modifying the resin acid chemically, biologically or other ways. In one embodiment of the present invention the resin acid based composition comprises at least one of following resin acids abietic acid, dehydoabietic acid, palustric acid, neoabietic acid, pimaric acid and isopimaric acid. In one embodiment of the present invention the resin acid based composition comprises at least one chemically modified resin acid of abietic acid, dehydoabietic acid, palustric acid, neoabietic acid, pimaric acid and isopimaric acid. The resin acid based composition may also be a mixture of unmodified and modified resin acids.
  • In one embodiment of the present invention the resin acid based composition is Tall Oil Rosin (TOR).
  • In one embodiment of the present invention the resin acid based composition and/or TOR comprises over 60% (w/w) resin acids. In one embodiment of the present invention the resin acid based composition and/or TOR comprises over 85% (w/w) resin acids.
  • The TOR can comprise 32-44.5% abietic acid, 18-25% dehydoabietic acid, 0-3% dihydoabietic acid, 3.0-11.5% isopimaric acid, 0-1.5% 8,5-isopimaric acid, 0-2.5% levopimaric acid, 3.3-4% neobietic acid, 7.5-10% palustric acid, 3-4.5% pimaric acid and 0-4.0% sandaropimaric acid. TOR may comprise <0.1% dimers and 0-7% other components.
  • In one embodiment of the present invention the resin acid based composition is Wood Rosin.
  • In one embodiment of the present invention the resin acid based composition and/or Wood Rosin comprises over 10 and up to 99% (w/w) resin acids. In one embodiment of the present invention the resin acid based composition and/or Wood Rosin comprises 50-99% (w/w) resin acids.
  • The Wood Rosin can comprise 45-51% abietic acid, 7.9-8.5% dehydoabietic acid, 0-1% dihydoabietic acid, 11-15.5% isopimaric acid, 0-4.2% 8,5-isopimaric acid, 0-0.2% levopimaric acid, 4.7-7% neobietic acid, 8.2-10% palustric acid, 3-7.1% pimaric acid and 0-2.0% sandaropimaric acid. Wood Rosin may comprise 0-4.2% dimers and 0-1% other components.
  • In one embodiment of the present invention the resin acid based composition is GUM Rosin.
  • In one embodiment of the present invention the resin acid based composition and/or GUM Rosin comprises over 10 and up to 99% (w/w) resin acids. In one embodiment of the present invention the resin acid based composition and/or GUM Rosin comprises 50-99% (w/w) resin acids.
  • The GUM Rosin can comprise 15-45% abietic acid, 3-15% dehydoabietic acid, 0-0.6% dihydoabietic acid, 3.6-28% isopimaric acid, 0-0.3% 8,5-isopimaric acid, 0-1.8% levopimaric acid, 10-19% neobietic acid, 5-25% palustric acid, 2-7.4% pimaric acid and 0-1.5% sandaropimaric acid. GUM Rosin may comprise 0-1.0% dimers and 0-3.5% other components.
  • In one embodiment of the present invention the resin acid based composition is Distilled Tall Oil (DTO). In one embodiment of the present invention the resin acid based composition is a distillation fraction of Tall Oil. In one embodiment of the present invention the resin acid based composition is a mixture of DTO and a distillation fraction of Tall Oil. The Distillation fraction of Tall Oil is any resin acids containing fraction of CTO available during CTO refining.
  • In one embodiment of the present invention the resin acid based composition and/or DTO comprises over 10 and up to 60% (w/w) resin acids. In one embodiment of the present invention the resin acid based composition and/or DTO comprises over 10 and up to 40% (w/w) resin acids.
  • In one embodiment of the present invention the resin acid based composition is separated from black liqueur during pulping process or TOS or CTO.
  • The resin acids of the resin acid based composition are insoluble in water. The resin acids of the resin acid based composition may be unmodified or modified.
  • In one embodiment of the present invention the resin acids of the resin acid based composition and the feed supplement are unmodified. The term “unmodified” should be understood as referring to the resin acid based composition comprising over 10% (w/w) resin acids that is not modified, i.e. treated chemically, or biologically. The feed supplement comprising the resin acid based composition may be used as such.
  • In one embodiment of the present invention the resin acids of the resin acid based composition are chemically, biologically or other ways modified resin acid compositions. The chemical and/or biological modification of resin acids of the resin acid based composition improves the solubility of its components and resin acids in the digestive tract of an animal. The resin acid based composition may be chemically modified e.g. partially or totally hydrogenated, disportinated, isomerized, oxidized, polymerized, etherified, saponified and/or esterified with suitable compounds, for example, fatty alcohols, glycol, glycerol or glyceridic fatty acid compounds such as monodi- and tri- and polyglycerides or sugar or polyol based esters. They may be also used as a reactant in Diels-Alder reaction.
  • In one embodiment of the present invention, the feed supplement comprises a resin acid based composition which is modified by saponification.
  • Various processes for the saponification of the resin acid based composition using e.g. NaOH or CaOH are known to a person skilled in the art. In one embodiment of the present invention, the resin acid based composition for use according to the present invention is modified by etherification.
  • In one embodiment of the present invention the resin acid based composition of the feed supplement comprises 1-90 (w/w) fatty acids and/or their derivatives. The fatty acids may be in form of oils or fats or in other forms like free fatty acids or esters, ethers or alkali metal salts or fatty alcohols.
  • In one embodiment of the present invention, the resin acid based composition includes unsaponifiables which have not an acid group, for example, lipophilic neutral substances and esters from wood. In one embodiment of the present invention, the resin acid based composition includes less than 15% unsaponifiables. The amount of unsaponifiables is typically in DTO products less than 5% and in TOR, Wood and GUM Rosin less than 6%.
  • In one embodiment of the present invention, the feed supplement comprises resin acid based composition which is dried. The resin acid based composition can be dried by spray drying, drum drying or by any other known suitable drying method.
  • In one embodiment of the present invention, the feed supplement comprises different active ingredients.
  • The feed supplement may be added in the feed in a concentration of 0.0001-10 kg//ton of dry weight of the total amount of the feed. The feed supplement comprising the resin acid based composition according to the invention may be added to the feed or feed supplement as such, or it may in general be further processed as desired.
  • The feed supplement comprising resin acid based composition according to the present invention can be modified into a form which is functional and effective in feeds. Carriers such as oil, fatty acids can be added to the composition for improving the functionality. Further emulgators such as glycerols, lecithin etc. can be added to the resin acid based composition for improving the solubility.
  • In one embodiments the feed supplement comprising the resin acid based composition according to the present invention may comprise chemically modified resin acid derivatives The resin acid derivatives could also comprise rosin based acid anhydrides, dimers, amines, maleimides, alkenyls, epoxy compositions and/or mixtures thereof or with other suitable chemically modified resin acids known to person skilled in the art.
  • In one embodiment of the present invention, the feed supplement comprises resin acid based composition which is absorbed into a carrier material suitable for the feed composition such as sugarbeet pulp.
  • In one embodiment of the present invention, the feed supplement comprises resin acid based composition which is mixed with a liquid carrier material suitable for the feed composition such as vegetable oils or fatty acids.
  • Further, the feed supplement comprising the resin acid based composition according to the invention may be added to the feed, or it may be administered to an animal separately (i.e. not as a part of any feed composition).
  • In this context, the term “feed composition” or “feed” should be understood as referring to the total feed composition of an animal diet or to a part thereof, including e.g. supplemental feed, premixes and other feed compositions. The feed may comprise different active ingredients.
  • The present invention also relates to a feed composition comprising the feed supplement according to the invention.
  • In one embodiment of the present invention, the feed composition comprises the feed supplement in an amount of 0.00001-1.0% (w/w of the dry weight of the total amount of the feed.
  • The present invention also relates to a use of the feed supplement according the present invention in a feed composition.
  • The invention also relates to a method of preventing the growth of harmful bacteria in the animal digestive tract, comprising the step of administering to an animal the feed supplement comprising the resin acid based composition according to the invention.
  • The invention also relates to a use of the feed supplement comprising the resin acid based composition comprising over 10% (w/w) resin acids in modulating microbial population of the animal digestive tract, preventing intestinal disorders, in enhancing rumen fermentation, lowering rumen methane production and/or binding toxins.
  • In this context, the term “harmful bacteria” should be understood as referring to any bacteria that is capable of affecting the digestive tract or health of an animal in an adverse manner, including competition for nutrients with the host animal. In this context, the term “microbial population” should be understood as referring to the microorganisms that inhabit the digestive tract, including the Bacteria and Archaea domains and microscopic members of the Eukaryote domain and also intestinal parasites. The microbial population will vary for different animal species depending on e.g. the health of an animal and on environmental factors.
  • In this context, the term “intestinal disorder” should be understood as referring to various disorders of the digestive tract in an animal, including e.g. diarrhea and other intestinal health problems.
  • In this context, the term “animal” should be understood as referring to all kinds of different animals, such as monogastric animals, ruminants, fur animals, pets and aquaculture. Non-limiting examples of different animals, including offspring, are cows, beef cattle, pigs, poultry, sheep, goats, horses, foxes, dogs, cats and fish.
  • In this context, the term “toxin” should be understood as referring to any poisonous substance produced within living cells or organisms. Toxins are products of plants, animals, microorganisms, for example bacteria, viruses, fungi, rickettsiae, protozoa, etc. In this context, the term “mycotoxin” should be understood as referring to a toxic secondary metabolite produced by fungi, such as yeast and mould. The most common mycotoxins in grains or silage are for example aflatoxins, zearalenone, ochratoxin A, deoxynivalenol, fumonisin and T-2 toxin. The toxins will vary depending on environmental factors.
  • In one embodiment of the present invention, the resin acid based composition is administered to an animal in an effective amount.
  • The feed supplement comprising the resin acid based composition comprising over 10% (w/w) resin acids is effective in the prevention of growth of harmful bacteria in the animal digestive tract, in the prevention of intestinal disorders, in the modulation of microbial population of the animal digestive tract, in enhancing rumen fermentation, lowering rumen methane production and/or in binding toxins. They have potential in toxin binding.
  • The present invention has a number of advantages. The feed supplement comprising the resin acid based composition is a readily available, natural, low-cost and environmentally friendly material. Further, it is non-toxic and well tolerated. The feed supplement comprising the resin acid based composition can be used as such. The invention is effective in modulating the composition of the microbiota in the animal digestive tract to a direction that is beneficial for animal performance. Subsequently, other benefits of the invention are e.g. improved animal health and productivity, higher product quality, uniformity, nutritional value and food and product safety, lower costs per production unit and decreased environmental loads. The invention allows the production of feed compositions and supplements at low cost.
  • The embodiments of the invention described hereinbefore may be used in any combination with each other. Several of the embodiments may be combined together to form a further embodiment of the invention. A product, a method or a use, to which the invention is related, may comprise at least one of the embodiments of the invention described hereinbefore.
    • EXAMPLES
  • In the following, the present invention will be described in more detail.
    • Example 1 Pathogen Inhibition Test
  • Clostridium perfringens is a pathogenic bacterium that causes necrotic enteritis in broiler chicks and other species of poultry. This experiment was conducted to study the inhibition of Cl. perfringens by the resin acid based compositions.
  • Two resin acid based compositions Tall Oil Rosin (TOR) and Distilled Tall Oil (DTO) obtained from Crude Tall Oil distillation were tested as their efficiency against Clostridium perfringens growth. The TOR composition contained 88% (w/w) resin acids and the DTO composition contained 27.5% (w/w) resin acids.
  • Test compounds
    TOR (free resin acids 88%) 0.03 g of 1:1 in turnip rape oil
    DTO (free resin acids 27.5%) 0.015 g
    TOR (free resin acids 88%) 0.15 ml of 10% stock solution in ethanol
    DTO (free resin acids 27.5%) 0.15 ml of 10% stock solution in ethanol
    TOR (free resin acids 88%) 0.15 ml of 1% stock solution in ethanol
    DTO (free resin acids 27.5%) 0.15 ml of 1% stock solution in ethanol
    ethanol 0.15 ml ethanol
  • The efficiency of test compositions was tested in a Cl. perfringens growth inhibition test that measures both the turbidity of the clostridial culture medium as a result of increased number of bacterial cells in a unit volume of medium, and the cumulative gas production during the simulation.
  • The efficiency of TOR and DTO against the growth of Cl. perfringens was tested at concentrations 0.01%. The TOR with 88% resin acid was melted at +105° C. and mixed 1:1 in turnip rape oil, in order to achieve the same runny form as the other two oily products. This diluted product was dosed as double amount in the simulation.
  • Simulation Procedure:
  • The simulation was conducted in 25-ml glass bottles containing 15 ml of sterile anaerobic TSGY-media (tryptic soy broth-yeast extract media with glucose) and the bottles were enclosed with air-tight stoppers to ensure anaerobic conditions throughout the experiment. At the beginning of the simulation 0.1% inoculums of the overnight grown Cl. perfringens culture was injected to TSGY-bottles. Test compounds, or sterile deionized water for the control treatment, were added in a 150 μl final volume from the respective stock solution according to the treatment. The simulation bottles were randomized to avoid artificial bias between treatments. The bottles were kept at an even 37° C. temperature and mixed 1 min before the turbidity measurement at each time point. The total simulation time was 8 h.
  • The optical density was measured at the time points of 0.5, 4 and 8 hours. The turbidity (optical density, OD) of growth media increases proportionally as the Cl. perfringens cell number and cell density increases.
  • The total gas production was measured at the end of the 8 h simulation as an indicator of growth efficiency, since Cl. perfringens produces gas due to the active metabolism during exponential growth.
  • Results
  • The results are illustrated in FIGS. 1 and 2. The TOR and DTO treatments very effectively inhibited the growth of Cl. perfringens, which was detected as the lack of turbidity change (FIG. 1) and the production of negligible amounts of gas (FIG. 2). TOR and DTO compositions inhibited the growth of Clostridium perfringens very efficiently regardless of the rosin acid concentration
    • Example 2 Methane Inhibition Test
  • Two resin acid based compositions Tall Oil Rosin (TOR) and Distilled Tall Oil (DTO) were tested in methane inhibitio test. The TOR composition contained 88% (w/w) resin acids and the DTO composition contained 27.5% (w/w) resin acids. The TOR composition containing 88% (w/w) resin acids was mixed 1:1 with turnip rape oil.
  • The methane inhibition test was conducted with rumen-fistulated dairy cows in order to study the potential of TOR and DTO to decrease the rate of methane production in the rumen. Rumen fluid samples were measured for the numbers of methanogenic bacteria, as they are the methane-producing organisms. The short chain fatty acid profiles, including the concentration of branched chain fatty acids, of the samples were measured as they indicate whether resin based acid compositions had effects to ruminal fermentation.
  • Three rumen-fistulated, lactating dairy cows were given 3.0 g of dry test compositions/head/day for 21 days, in four portions. TOR and DTO compositions were first dried onto sugar beet pulp and then mixed into the compound feed. Rumen samples were taken before the dietary intervention, once a week during the test composition feeding, and after a two-week washout period. The samples of the trial were analysed for short chain fatty acids (SCFAs) by gas chromatography and numbers of methanogens, protozoa and total bacteria by qPCR.
  • Results
  • The results show that the numbers of methane producing bacteria decreased numerically during the TOR and DTO feeding period, while protozoa and the total number of bacteria were not affected by the product. The levels of lactic, propionic, and valeric acids and total short chain fatty acids tended to decrease in the rumen fluid during the TOR and the DTO feeding period. The concentration and relative proportion of branched chain fatty acids tended to decrease as a response to TOR and the DTO.
  • The experiment shows that the TOR and the DTO lowers the amount of methanogens and thus lowers rumen methane production. The experiment also shows that the TOR and the DTO enhances rumen fermentation.
    • Example 3
  • This experiment was conducted to study the effect of saponified DTO with 35% (w/w) resin acids with or without Sugar Beet Pulp (SBP) carrier on the microbial microbial population and fermentation of broiler chick ileum in vitro.
  • The saponified DTO was manufactured by adding NaOH (sodium hydroxide) to DTO, adding enough water to adjust the total dry matter (DTO) percentage of the mixture to 18-20%, heating the mixture to +90° C., keeping the temperature at +90° C. for 120 minutes, during which time the mixture was gently stirred at 15 min intervals.
  • Experiment
  • Ileal contents of 40-days old broiler chicks were used for the simulation media and as inoculants in the simulation models. The trial treatments were prepared from a batch of saponified DTO.
  • Preparations of DTO with 35% resin acids were produced:
  • 1. Saponified DTO with 20% Dry Matter Content
  • An aliquot of the DTO soap was heated to 90° C., mixed with finely ground SBP powder, and dried.
  • 2. Saponified DTO
  • Gastrointestinal Digestion of the Saponified DTO:
  • Part of the liquid DTO soap and the carrier-absorbed DTO soap was digested by a pepsin-HCl-treatment (pH 2.25) followed by a pancreatin bile-acid-NaOH treatment (pH 6.2) in a dilution series. The digestion was made to evaluate whether the products would resist the conditions of the upper gastrointestinal tract before they enter the distal intestine with higher microbial activity.
  • The simulation was conducted in a total of 160 2-ml plastic microcentrifuge vials, in 1.5 ml volume, with 10 hours simulation time. Samples were tested at four concentrations of the dry matter of DTO: 0%, 0.005%, 0.01%, 0.01% and 1%.
  • All the simulation samples were analysed for short chain fatty acids and the total number of microbes. In addition, selected samples were analysed for a number of microbial species or groups by quantitative real-time PCR (qPCR). Ileal simulation samples were analysed for lactobacilli and streptococci.
  • Results
  • In the ileal simulation model, DTO soap at 0.5 kg/ton level increased the concentrations of acetic and propionic acids and decreased the concentration of lactic acid. This suggests modulation of microbial metabolism from homofermentative towards heterofermentative metabolical route, which can be seen as a very positive change improving the feed conversion ratio. The sugar beet pulp carrier had little effect on the fermentation
    • Example 4 Test A Toxin Adsorption into Solid Phase in Vitro
  • The capacity of a test product to remove toxins from aqueous medium was measured in this test. An efficient toxin adsorbent should be able to bind the toxin in all compartments of the digestive tract, to inhibit the toxin from getting absorbed by the animal. To evaluate the efficacy of the binder in the acidic stomach, the test was run at pH value 2.5 (50 mM glycine-HCl buffer).
  • The test product was a saponified DTO product which contains 20% resin acids. The saponified DTO was manufactured as in example 3. The product tested was the saponified DTO (20%) with or without silicate carrier.
  • The test A was conducted with two toxins Ochratoxin A (OTA) and Zearalenone (ZEA), at pH-value 2.5, three test substance levels 0.2, 0.5 and 1 kg/ton and four replicate samples per treatment. Control treatment was replicated 8 times.
  • Mycotoxins OTA and ZEA were available as 3H-labeled pure compounds, and radioactivity, measured by liquid scintillation counting, was used for their quantification in the samples.
  • The experiment was conducted in silanized glass vials in 1 ml volume of buffer. In the test system, the bound radioactive toxin becomes removed from the liquid phase through co-pelleting with the insoluble components of the potential binder. The following procedure was used: 1. The test products were weighed into the vials, 2. 3H-labeled and intact mycotoxin was mixed with the buffers to get the final toxin concentration of 10 μg/l, 3. 1 ml of the buffer-mycotoxin solution was added to the vials, 4. The vials were sealed and kept for 2 hours at 37° C. in constant slow shaking, 5. The vials were centrifuged for 10 min at 3000×g 6. 50 μl of the supernatant was mixed with 150 μl of liquid scintillation cocktail (Optiphase) into wells of a 96-well microtiter plate and 7. The radioactivity of the samples was measured with a liquid scintillation counter for five minutes
  • Results
  • The saponified DTO was able to bind OTA from the aqueous medium statistically significantly, and the binding was dependent on the concentration of the test product. The saponified DTO adsorbed 25-60% of the free OTA from the medium.
  • The saponified DTO significantly decreased the amount of free ZEA even at the lowest dosages. The saponified DTO removed approximately 30-60% of the free toxin.
  • It is obvious to a person skilled in the art that, with the advancement of technology, the basic idea of the invention may be implemented in various ways. The invention and its embodiments are thus not limited to the examples described above; instead they may vary within the scope of the claims.

Claims (22)

1.-5. (canceled)
6. Use of a feed supplement comprising the resin acid based composition comprising over 10% (w/w) resin acids in binding toxins.
7. The use according to claim 6, characterized in that the toxin is mycotoxin.
8.-22. (canceled)
23. The use according to claim 6, characterized in that the resin acid based comprises at least one of following resin acids abietic acid, dehydoabietic acid, palustric acid, neoabietic acid, pimaric acid and isopimaric acid and/or derivative thereof.
24. The use according to claim 6, characterized in that the resin acid based composition is Tall Oil Rosin (TOR).
25. The use according to claim 6, characterized in that the resin acid based composition comprises over 60% (w/w) resin acids.
26. The use according to claim 6, characterized in that the resin acid based composition is Wood Rosin.
27. The use according to claim 6, characterized in that the resin acid based composition is GUM Rosin.
28. The use according to claim 6, characterized in that the resin acid based composition comprises over 10 and up to 99% (w/w) resin acids.
29. The use according to claim 6, characterized in that the resin acid based composition is Distilled Tall Oil (DTO).
30. The use according to claim 6, characterized in that the resin acid based composition comprises over 10 and up 60% (w/w) resin acids.
31. The use according to claim 6, characterized in that the resin acids are unmodified.
32. The use according to claim 6, characterized in that the resin acids are modified chemically, biologically or other ways.
33. The use according to claim 32, characterized in that the resin acids are hydrogenated, disproportined, isomerizated, oxidized, polymerized, etherified, saponified and/or esterified and/or used as a reactant in Diels-Alder reaction.
34. The use according to claim 6, characterized in that the resin acid based composition comprises 1-90 (w/w) fatty acids and/or their derivatives.
35. The use according to claim 6, characterized in that the resin acid based composition is modified by saponification.
36. The use according to claim 6, characterized in that the resin acid based composition is dried.
37. The use according to claim 6, characterized in that the resin acid based composition is absorbed into a carrier material or mixed with a carrier.
38.-39. (canceled)
40. Use of the feed supplement according claim 6 in a feed composition in the modulation of microbial population of the animal digestive tract by increasing the concentrations of acetic and propionic acids and decreasing the concentration of lactic acid, in enhancing rumen fermentation, lowering rumen methane production and/or in binding toxins.
41. The use according to claim 40, characterized in that the feed composition comprises a feed supplement in an amount of 0.00001-1.0% (w/w) of the dry weight of the total amount of feed.
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