CN109380596A - A kind of soft particle milk replacer and preparation method - Google Patents

A kind of soft particle milk replacer and preparation method Download PDF

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Publication number
CN109380596A
CN109380596A CN201811254006.6A CN201811254006A CN109380596A CN 109380596 A CN109380596 A CN 109380596A CN 201811254006 A CN201811254006 A CN 201811254006A CN 109380596 A CN109380596 A CN 109380596A
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kilograms
powder
expansion
mildew preventive
dregs
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CN201811254006.6A
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高来
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Changsha Wik Feed Co Ltd
Beijing Wik Biotechnology Ltd By Share Ltd
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Changsha Wik Feed Co Ltd
Beijing Wik Biotechnology Ltd By Share Ltd
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Priority to CN201811254006.6A priority Critical patent/CN109380596A/en
Publication of CN109380596A publication Critical patent/CN109380596A/en
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    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23KFODDER
    • A23K50/00Feeding-stuffs specially adapted for particular animals
    • A23K50/30Feeding-stuffs specially adapted for particular animals for swines
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23KFODDER
    • A23K10/00Animal feeding-stuffs
    • A23K10/10Animal feeding-stuffs obtained by microbiological or biochemical processes
    • A23K10/12Animal feeding-stuffs obtained by microbiological or biochemical processes by fermentation of natural products, e.g. of vegetable material, animal waste material or biomass
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23KFODDER
    • A23K10/00Animal feeding-stuffs
    • A23K10/10Animal feeding-stuffs obtained by microbiological or biochemical processes
    • A23K10/16Addition of microorganisms or extracts thereof, e.g. single-cell proteins, to feeding-stuff compositions
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23KFODDER
    • A23K10/00Animal feeding-stuffs
    • A23K10/20Animal feeding-stuffs from material of animal origin
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23KFODDER
    • A23K10/00Animal feeding-stuffs
    • A23K10/30Animal feeding-stuffs from material of plant origin, e.g. roots, seeds or hay; from material of fungal origin, e.g. mushrooms
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23KFODDER
    • A23K10/00Animal feeding-stuffs
    • A23K10/30Animal feeding-stuffs from material of plant origin, e.g. roots, seeds or hay; from material of fungal origin, e.g. mushrooms
    • A23K10/37Animal feeding-stuffs from material of plant origin, e.g. roots, seeds or hay; from material of fungal origin, e.g. mushrooms from waste material
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23KFODDER
    • A23K20/00Accessory food factors for animal feeding-stuffs
    • A23K20/10Organic substances
    • A23K20/105Aliphatic or alicyclic compounds
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23KFODDER
    • A23K20/00Accessory food factors for animal feeding-stuffs
    • A23K20/10Organic substances
    • A23K20/142Amino acids; Derivatives thereof
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23KFODDER
    • A23K20/00Accessory food factors for animal feeding-stuffs
    • A23K20/10Organic substances
    • A23K20/142Amino acids; Derivatives thereof
    • A23K20/147Polymeric derivatives, e.g. peptides or proteins
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23KFODDER
    • A23K20/00Accessory food factors for animal feeding-stuffs
    • A23K20/10Organic substances
    • A23K20/158Fatty acids; Fats; Products containing oils or fats
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23KFODDER
    • A23K20/00Accessory food factors for animal feeding-stuffs
    • A23K20/10Organic substances
    • A23K20/174Vitamins
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23KFODDER
    • A23K20/00Accessory food factors for animal feeding-stuffs
    • A23K20/10Organic substances
    • A23K20/195Antibiotics
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23KFODDER
    • A23K20/00Accessory food factors for animal feeding-stuffs
    • A23K20/20Inorganic substances, e.g. oligoelements
    • A23K20/24Compounds of alkaline earth metals, e.g. magnesium
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23KFODDER
    • A23K20/00Accessory food factors for animal feeding-stuffs
    • A23K20/20Inorganic substances, e.g. oligoelements
    • A23K20/26Compounds containing phosphorus
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23KFODDER
    • A23K20/00Accessory food factors for animal feeding-stuffs
    • A23K20/20Inorganic substances, e.g. oligoelements
    • A23K20/30Oligoelements
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23KFODDER
    • A23K40/00Shaping or working-up of animal feeding-stuffs
    • A23K40/10Shaping or working-up of animal feeding-stuffs by agglomeration; by granulation, e.g. making powders
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23KFODDER
    • A23K50/00Feeding-stuffs specially adapted for particular animals
    • A23K50/60Feeding-stuffs specially adapted for particular animals for weanlings
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P60/00Technologies relating to agriculture, livestock or agroalimentary industries
    • Y02P60/80Food processing, e.g. use of renewable energies or variable speed drives in handling, conveying or stacking
    • Y02P60/87Re-use of by-products of food processing for fodder production

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  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Polymers & Plastics (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
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  • Animal Husbandry (AREA)
  • Biotechnology (AREA)
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  • Inorganic Chemistry (AREA)
  • Proteomics, Peptides & Aminoacids (AREA)
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  • Sustainable Development (AREA)
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Abstract

The invention discloses a kind of soft particle milk replacer and preparation method, which contains expansion corn, expansion dregs of beans, low albumen whey powder, high protein whey powder, plasma protein powder, yeast extract, enzymatic hydrolysis fish soluble slurry protein powder, liquid mildew preventive etc..Accordingly, inventor has also set up corresponding processing method.By adding above-mentioned formula and using special processing method, particle mellowness significantly improves, and pellet hardness 1.0kg is hereinafter, piglet feed intake is obviously improved, and average daily feed intake can reach 300 grams or more in 9 days after wean.In addition, application present invention feeding weanling pig, the easily upper slot of piglet, eat it is more do not have loose bowels, body health uniformity is good, can effectively promote piglet survival ratio.

Description

A kind of soft particle milk replacer and preparation method
Technical field
The invention belongs to pannage technical field more particularly to a kind of soft particle milk replacers and preparation method.
Background technique
In breeding production, pig farmer is born 10 days or so in piglet --- creep feed is used within two weeks after wean, to supplement mother The deficiency of cream tempers sucking pig enteron aisle, provides nutrition needed for sucking pig during weaning, sucking pig health during maintenance wean.Reality production In, often there is sucking pig and is reluctant to search for food in feeding creep feed, and the upper slot time is long, and sucking pig material feeding is few, pellet its reason actually partially One of, cause nutrition to provide insufficient, phenomena such as sucking pig is lost flesh after wean, and immunity is low, slow growth.
Porket creep needs the feed that nutrition is high, food calling is good, particle is soft to weaning period, but in creep feed processing, Because dairy products, the working process of cereal materials, the pretreatment of protein raw materials and the use of high digestibility viscous materials will lead to life It is high to produce pellet hardness, sucking pig is reluctant to search for food, therefore dairy products, pretreated feedstock and viscous materials are often limited in process for preparation Dosage increases conventional raw material dosage, causes creep feed palatability poor, and digestibility decline, diarrhea is serious, finally influences porket creep With the growth and development during wean.
The present invention can effectively solve creep feed battalion in view of the above problems, provide a kind of high-quality creep feed and preparation method It is feeding for giving granular sensation official, by the extensive application of high-grade raw material, expansion process, liquid mildew preventive adding technology is reduced Grain hardness, improves trophic level, finally increases feed intake, improve the speed of growth of weanling pig.
Summary of the invention
The invention discloses a kind of soft particle milk replacer and preparation methods, using creep feed formula of the invention, nutritive water Flat height, food calling performance is good, absorption easy to digest, can effectively solve piglet during wean nutrition stress, improve the speed of growth.Using The creep feed of processing technology of the present invention passes through high-temperature expansion, separating twice, low temperature granulation, liquid mildew preventive spraying, so that particle Feed is soft palatable, searches for food and digests beneficial to piglet, and product is safe and healthy.
To achieve the above object, the present invention provides a kind of soft particle milk replacers, contain expansion corn, expansion dregs of beans, height Content whey powder, low albumen whey powder, plasma protein powder, fish soluble slurry protein powder, yeast extract, liquid mildew preventive.
Material quality percentage are as follows: expansion corn 15-25% expands dregs of beans 8-12%, high protein whey powder 5-10%, low egg White whey powder 7-15%, plasma protein powder 2-4%, fish soluble slurry protein powder 2-4%, yeast extract 1-3%, liquid mildew preventive 1.5- 2.5%。
The present invention also provides a kind of preparation methods of soft particle milk replacer: corn crushes for the first time, the first wheat-middlings of dregs of beans Broken, the two mixing, expanded device high-temperature expansion crushes again after cooling, spare;Expand unclassified stores in spare material and formula It prepares by weight, liquid mildew preventive is sprayed into after mixing, mixed in spray, soybean oil is sprayed into after liquid mildew preventive has sprayed into, continued Mixing, into storehouse to be pelletized, low temperature granulation.
Specific embodiment
The soft particulate material creep feed formula of embodiment 1
1 245 kilograms of corn of expansion of formula, expansion 99 kilograms of dregs of beans, crack rice 125 kilograms, 40 kilograms of popcorn, albumin milk Clear 50 kilograms of powder, 100 kilograms of low albumen whey powder, 37.5 kilograms of inlet steam fish meal, 50 kilograms of glucose, 25 kilograms of white sugar, 30 kilograms of plasma protein powder, 10 kilograms of beer yeast powder, 10 kilograms of soybean lecithin powder emulsify 20 kilograms of oil powder, expanded soybean 50 Kilogram, 25 kilograms of fish soluble slurry protein powder, 8.5 kilograms of fermented bean dregs, 12 kilograms of yeast extract, 20 kilograms of soybean oil, liquid it is anti- Mould dose 15 kilograms, 6 kilograms of calcium monohydrogen phosphate, 4 kilograms of calcium lactate, 4 kilograms of 98% lysine, 2 kilograms of threonine, 1 kilogram of methionine, 0.6 kilogram of tryptophan, 1 kilogram of choline chloride, 3 kilograms of basic zinc chloride, 3 kilograms of acidulant, 1.2 kilograms of oxytetracycline calcium, gold are mould Plain 0.5 kilogram, 1.2 kilograms of composite mineral matter, 0.5 kilogram of multi-vitamins, each raw material are 1000 kilograms total.
2 265 kilograms of corn of expansion of formula, 94.5 kilograms of dregs of beans of expansion, crack rice 100 kilograms, 50 kilograms of popcorn, height 75 kilograms of albumen whey powder, 75 kilograms of low albumen whey powder, 37.5 kilograms of inlet steam fish meal, 50 kilograms of glucose, white sugar 25 Kilogram, 30 kilograms of plasma protein powder, 10 kilograms of soybean lecithin powder, emulsify 20 kilograms of oil powder, the molten slurry egg of 50 kilograms of expanded soybean, fish 25 kilograms of white powder, 25 kilograms of yeast extract, 20 kilograms of soybean oil, 20 kilograms of liquid mildew preventive, 6 kilograms of calcium monohydrogen phosphate, lactic acid 4 kilograms of calcium, 4 kilograms of 98% lysine, 2 kilograms of threonine, 1 kilogram of methionine, 0.6 kilogram of tryptophan, 1 kilogram of choline chloride, alkali 3 kilograms of formula zinc chloride, 1.2 kilograms of oxytetracycline calcium, 0.5 kilogram of aureomycin, 1.2 kilograms of composite mineral matter, is answered at 3 kilograms of acidulant 0.5 kilogram of vitamin is closed, each raw material is 1000 kilograms total.
Formula 3 expansion 315 kilograms of corns, expansion 92 kilograms of dregs of beans, crack rice 100 kilograms, 75 kilograms of high protein whey powder, 75 kilograms of low albumen whey powder, 40 kilograms of inlet steam fish meal, 50 kilograms of glucose, 25 kilograms of white sugar, plasma protein powder 30 are public Jin, 10 kilograms of soybean lecithin powder emulsify 20 kilograms of oil powder, 50 kilograms of expanded soybean, 25 kilograms of fish soluble slurry protein powder, extraction from yeast 25 kilograms of object, 20 kilograms of soybean oil, 20 kilograms of liquid mildew preventive, 6 kilograms of calcium monohydrogen phosphate, 4 kilograms of calcium lactate, 98% lysine 4 Kilogram, 2 kilograms of threonine, 1 kilogram of methionine, 0.6 kilogram of tryptophan, 1 kilogram of choline chloride, 3 kilograms of basic zinc chloride, acidification 3 kilograms of agent, 1.2 kilograms of oxytetracycline calcium, 0.5 kilogram of aureomycin, 1.2 kilograms of composite mineral matter, 0.5 kilogram of multi-vitamins, respectively Raw material is 1000 kilograms total.
The preparation of the soft particulate material creep feed of embodiment 2
Its specific preparation process of soft particle milk replacer are as follows:
A, it uses the sieve of 1.0mm to crush respectively corn, dehulled soybean meal, into feed proportioning storehouse, is carried out by formula rate weight Enter after mixing to expansion buffer storehouse, carries out expansion process.First the operating temperature of expanding machine thermostat is set It is 110 DEG C, by the mixed material in expansion buffer storehouse into automatic blanking, adjustment expansion cavity pressure makes up to 3Mpa, and control is squeezed It presses the revolving speed of screw rod in 250r/min, mixed material is kept to stop 20s or so in expander, adjust material moisture 18%, it is swollen Mixed material after swollen is cooling, crushes again, sieve 1.5mm, is allowed to 40 mesh percent of pass of smashing fineness greater than 90%, spare.
B, will crack rice, fish meal, expanded soybean, white sugar by formula rate weight carry out flat mixer, incorporation time 150s, Into to powder cabin, using the sieve of 1.0mm, it is allowed to 40 mesh piece percent of pass greater than 90%, it is spare.
C, smashed expansion material, smashed soya-bean oil, liquid mildew preventive spray art: is added one by one by formula rate It cracks rice, fish meal, expanded soybean, white sugar mixed material, low albumen whey powder, high protein whey powder, plasma protein powder, soybean lecithin Powder, emulsification oil powder, fish soluble slurry protein powder, glucose, yeast extract, calcium lactate, calcium monohydrogen phosphate, acidulant, alkali formula chlorination Zinc, composite trace element, lysine, methionine, threonine, tryptophan, choline chloride, multi-vitamins, antioxidant, soil are mould Plain calcium, aureomycin spray into liquid mildew preventive into flat mixer mixing 150s, mix in spray, have sprayed into liquid mildew preventive At rear penetrating soybean oil, is mixed in spray, feed after mixing is finally entered into storehouse to be pelletized.
D, feed granulating process: granulation processing is carried out wait powder in storehouse of pelletizing.Granulating process parameter, 55 DEG C of refining temperature, Quenched steam pressure is to 0.3Mpa, and 250 r/min of granulator revolving speed, material is in quality-adjusting device time 25s, quenched material moisture 17% or so, ring moulds aperture 2.0mm, cutter and ring moulds spacing 1.0mm, first start granulator, will be transferred to system wait material in storehouse of pelletizing Grain machine is granulated, and gradually adjusts refining temperature, quenched pressure, and particle is packaged into lower one-step cooling after working well by setup parameter Process.
E, cooling packing process: granulation normal granules enter cooler, after the cooling 600s of counterflow cooler, are transferred to The screening stage is respectively that 3.0mm, 1.0mm reciprocating sieve carry out using upper and lower mesh size, qualified products entering cost storehouse, metering It is packaged.
The quality index needs of soft particle milk replacer finished product reach: moisture 13% is hereinafter, 19% or more crude protein, crude fibre 4% Hereinafter, coarse ash 7.5% is hereinafter, calcium 0.5-1.0%, 0.4% or more total phosphorus, 1.45% or more lysine, pellet hardness 1.0kg with Under.
Influence of the soft particle milk replacer of embodiment 3 to wean pig growth performance:
Test site: the prosperous animal husbandry Co., Ltd of Lianyuan of Hunan three
Experimental design: weanling healthy sucking pig 29 is chosen, 6-8 kilograms of weight or so, is divided by the close principle of weight size Column raising, is divided into 3 columns, every column 9-10 progress repeated authentication experiment.
Testing index: experimental period original body mass, experimental period feeding total amount, experimental period average daily feed intake, test end of term weight, examination Test last counterpoise, feedstuff-meat ratio, diarrhea rate, test daily ingestion amount.
Test data summarizes (table one):
Test data summarizes (table two):
Test result: from table one, table two the result shows that, the soft particle milk replacer of Direct-fed, daily ingestion amount steadily improve after wean, Nutrition stress be reduced, and daily gain performance is good, the advantages such as diarrhea rate is low.
The influence of the soft particle milk replacer of embodiment 4 and grit creep feed to wean pig growth performance:
Test site: Henan Zhongmou County three and animal husbandry Co., Ltd
Experimental design: 28-30 age in days body condition good weanling pig 72 are chosen, random packet design principle is taken, is divided into four In addition group, every group of 18 piglets teach slot control wherein two groups are taught slot experiment material for soft particle for * * company plain particles material for two groups Expect
Testing index: experimental period original body mass, experimental period initial counterpoise, experimental period feeding total amount, experimental period average daily feed intake, examination It tests end of term weight, test last counterpoise, feedstuff-meat ratio.
Test data summarizes (table three):
Test result: from table three, the result shows that, the soft particle milk replacer of piglet Direct-fed after wean compares common grit religion slot Material feed intake, daily gain, feedstuff-meat ratio show good advantage.
The screening of 5 liquid mildew preventive additive amount of embodiment
This example screens liquid mildew preventive additive amount, due to the variation of liquid mildew preventive usage amount, to creep feed Grain hardness, moisture content of finished products can have an impact, and in view of in this, the present invention verifies screening optimum addition.
Different liquids mould inhibitor is added to the influence data (table four) of creep feed pellet hardness, product moisture:
Test result: from table four, the result shows that, creep feed is produced in process for preparation, the liquid mildew preventive of 0-20 kgs/tonne of addition, Pellet hardness drops to 0.76kg from 1.67kg, and fall is up to 50% or more, and product moisture increases to 11.02% from 9.7%, no Change equal product to product hardness variation, moisture with additive amount to significantly affect.

Claims (3)

1. a kind of soft particle milk replacer, which is characterized in that contain expansion corn, expansion dregs of beans, high-content whey powder, low albumin milk Clear powder, plasma protein powder, fish soluble slurry protein powder, yeast extract, liquid mildew preventive.
2. creep feed according to claim 1, which is characterized in that material quality percentage are as follows: corn 15-25% is expanded, it is swollen Swollen dregs of beans 8-12%, high protein whey powder 5-10%, low albumen whey powder 7-15%, plasma protein powder 2-4%, fish soluble slurry protein powder 2- 4%, yeast extract 1-3%, liquid mildew preventive 1.5-2.5%.
3. a kind of preparation method of soft particle milk replacer, which is characterized in that corn crushes for the first time, and dregs of beans crushes for the first time, and two Person's mixing, expanded device high-temperature expansion crush again after cooling, spare;Unclassified stores is by weight in expanding spare material and being formulated Amount is prepared, and sprays into liquid mildew preventive after mixing, is mixed in spray, is sprayed into soybean oil after liquid mildew preventive has sprayed into, continues to mix, Into storehouse to be pelletized, low temperature granulation.
CN201811254006.6A 2018-10-26 2018-10-26 A kind of soft particle milk replacer and preparation method Pending CN109380596A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111264686A (en) * 2020-03-19 2020-06-12 湖南粒丰生物科技有限公司 Preparation method of antibiotic-free fermented soft-particle creep feed for suckling piglets
CN118160810A (en) * 2024-04-16 2024-06-11 佛山深农饲料有限公司 Feed containing soft wet powder and creep feed and preparation method thereof

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US20130115297A1 (en) * 2005-10-12 2013-05-09 Danisco Us Inc. Stable, durable granules with active agents
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CN107581362A (en) * 2017-09-13 2018-01-16 云南农业大学 A kind of feed liquid mildew preventive and its application
CN108041308A (en) * 2017-12-29 2018-05-18 河南艾德昕生物科技有限公司 A kind of creep feed and preparation method thereof

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CN101766227A (en) * 2009-11-04 2010-07-07 成都特驱农牧科技有限公司 Roaster-used milk powder material
CN102550858A (en) * 2011-12-19 2012-07-11 上海新农饲料有限公司 Sand-shaped granulated creep feed product and preparation method thereof
CN103416591A (en) * 2013-08-08 2013-12-04 辽宁禾丰牧业股份有限公司 Soft-pellet creep feed and preparation method thereof
CN107581362A (en) * 2017-09-13 2018-01-16 云南农业大学 A kind of feed liquid mildew preventive and its application
CN108041308A (en) * 2017-12-29 2018-05-18 河南艾德昕生物科技有限公司 A kind of creep feed and preparation method thereof

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111264686A (en) * 2020-03-19 2020-06-12 湖南粒丰生物科技有限公司 Preparation method of antibiotic-free fermented soft-particle creep feed for suckling piglets
CN118160810A (en) * 2024-04-16 2024-06-11 佛山深农饲料有限公司 Feed containing soft wet powder and creep feed and preparation method thereof

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Application publication date: 20190226