CN114886040A - Laying hen feed additive and preparation method and application thereof - Google Patents

Laying hen feed additive and preparation method and application thereof Download PDF

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CN114886040A
CN114886040A CN202210526513.0A CN202210526513A CN114886040A CN 114886040 A CN114886040 A CN 114886040A CN 202210526513 A CN202210526513 A CN 202210526513A CN 114886040 A CN114886040 A CN 114886040A
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laying
laying hens
additive
feed
vitamin
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张刚娟
宋宇轩
王宝龙
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Shaanxi Yangling Ruiqi Biotechnology Co ltd
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Shaanxi Yangling Ruiqi Biotechnology Co ltd
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    • 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
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K67/00—Rearing or breeding animals, not otherwise provided for; New or modified breeds of animals
    • A01K67/02—Breeding vertebrates
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23K—FODDER
    • A23K10/00—Animal feeding-stuffs
    • A23K10/10—Animal feeding-stuffs obtained by microbiological or biochemical processes
    • A23K10/16—Addition of microorganisms or extracts thereof, e.g. single-cell proteins, to feeding-stuff compositions
    • A23K10/18—Addition of microorganisms or extracts thereof, e.g. single-cell proteins, to feeding-stuff compositions of live microorganisms
    • 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
    • A23K20/116—Heterocyclic 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
    • A23K20/174—Vitamins
    • 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
    • A23K20/189—Enzymes
    • 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
    • A23K20/20—Inorganic substances, e.g. oligoelements
    • A23K20/28—Silicates, e.g. perlites, zeolites or bentonites
    • 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
    • A23K20/20—Inorganic substances, e.g. oligoelements
    • A23K20/30—Oligoelements
    • 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
    • Y02P60/80—Food processing, e.g. use of renewable energies or variable speed drives in handling, conveying or stacking
    • Y02P60/87—Re-use of by-products of food processing for fodder production

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Abstract

The invention provides a laying hen feed additive and a preparation method and application thereof, and belongs to the technical field of livestock feed. The feed additive provided by the invention comprises the following components: vitamin A180-320 IU, vitamin D 3 40-120 IU, 4-12 mg of organic iron, 260-320 IU of xylanase, 0.2-0.6 g of eucommia ulmoides, 0.1-0.5 g of angelica sinensis, 0.1-0.3 g of astragalus membranaceus and 0.5-2 g of montmorillonite. The invention also provides a preparation method of the feed additive, which comprises the following steps: pulverizing Eucommiae cortex, radix Angelicae sinensis, and radix astragali respectively, steaming, and mixing with other raw materials at a certain proportion. The feed additive prepared by the invention can be directly added into basic feed for laying hens in the later period of laying, can improve the laying performance and egg quality of the laying hens in the later period of laying, and effectively reduces the problems of overfeeding, fatty liver and the like in the later period of laying.

Description

Laying hen feed additive and preparation method and application thereof
Technical Field
The invention belongs to the technical field of livestock feed, and particularly relates to a laying hen feed additive and a preparation method and application thereof.
Background
Along with the development of economy, the living standard of people is continuously improved, the demand of people for chicken products is more and more large, in recent years, the chicken raising industry in China is rapidly developed, and the scale and the production level are also greatly improved. However, in a modern large-scale livestock breeding mode, the breeding density is high, the breeding direction of laying hens tends to be lighter in weight, the feeding conservation and the production performance high yield, the physiological metabolism burden of the laying hens is obviously increased, most breeding enterprises do not strictly subdivide the breeding stage according to the breeding and physiological production characteristics of the modern laying hens and are matched with a more refined staged breeding management mode and a feed nutrition regulation and control technology, so that the laying peak duration time of the laying hens cannot reach the breeding target of the variety, the quality of egg products is unstable, and particularly in the later stage of laying hen breeding, due to the reduction of physiological functions of intestinal tracts, livers, reproductive systems and the like, the nutrition digestion and absorption function is reduced, the metabolism and transformation are disordered, and the nutrition is fed back to the production performance of the laying hens in the later stage and is expressed as overfeeding, fatty liver, preserved eggs, soft-shell eggs, The color of the eggshell of the brown-shell egg is obviously reduced, and the like.
At present, due to traditional breeding habits, feed factories and farmers generally use feed in the egg laying peak period as feed in the later egg laying period, or 1% of coarse stone powder is additionally added on the basis of the feed in the peak period to improve the calcium level for laying hens in the later egg laying period, and part of manufacturers reduce energy and protein on the basis of the egg laying peak period to reduce cost to use as compound feed in the later egg laying period, so that the nutrition requirements in the later egg laying period cannot be met, and the conditions of light weight, poor eggshell quality, much hair loss and the like of the laying hens are caused. Therefore, how to meet the nutritional requirements of the laying hens in the later period and improve the production performance of the laying hens in the later period are one of the key problems to be solved in the field.
Disclosure of Invention
In view of the above, the invention aims to provide a layer feed additive, which can effectively reduce the problems of overfeeding and fatty liver in the later laying period of layers and obviously improve the quality of eggs.
In order to achieve the above purpose, the invention provides the following technical scheme:
the invention provides a laying hen feed additive which comprises the following components: vitamin A180-320 IU, vitamin D 3 40-120 IU, 4-12 mg of organic iron, 260-320 IU of xylanase, 0.2-0.6 g of eucommia ulmoides, 0.1-0.5 g of angelica sinensis, 0.1-0.3 g of astragalus membranaceus and 0.5-2 g of montmorillonite.
Preferably, when the feed is used for feeding laying hens aged 350-450 days, the feed also comprises vitamin B 4 80-120 mg of saccharomyces cerevisiae and 80-120 ten thousand cfu of saccharomyces cerevisiae.
Preferably, when the feed is used for feeding 451-600-day-old laying hens, 80-120 mg of choline chloride, 4-6 hundred million cfu of butyric acid bacteria and 8-12 hundred million cfu of bacillus subtilis are also included.
The invention also provides a preparation method of the additive, which comprises the following steps: pulverizing Eucommiae cortex, radix Angelicae sinensis, and radix astragali respectively, steaming, and mixing with other raw materials at a certain proportion.
Preferably, the eucommia ulmoides, the angelica and the astragalus membranaceus are ground and sieved by a sieve of 30-50 meshes.
Preferably, the steam treatment conditions are: the steam pressure is 0.3-0.5 MPa, the steam temperature is 80-85 ℃, and the treatment time is 4-6 min.
The invention also provides application of the additive in improving the egg yield and/or egg quality of laying hens in the later period of egg laying.
Preferably, the dosage of the additive is 2-3% of the mass of the basic feed.
Preferably, in the stage of 350-450 days old of the laying hens, the weight ratio of 15 in the afternoon of each day is: 00-17: feeding at stage 00.
Preferably, at the 451-600 day old stage of the laying hens, the ratio of 7: 30-11: 00 and 15 pm: 00-17: feeding at stage 00 respectively.
The invention has the beneficial effects that:
by reasonably matching the raw materials, the invention can effectively improve the intestinal digestion and absorption functions of the laying hens in the later period of laying, improve the digestibility and the nutrient uptake rate of the feed, reduce the problems of overfeeding, fatty liver and the like in the later period of laying, and obviously improve the eggshell quality in the later period of laying.
The feed is used for feeding laying hens aged 350-450 days and 451-600 days respectively in a specific time period, so that sufficient nutrition can be taken in the egg shell forming time stage at the egg laying later stage of the laying hens, and the egg shell quality is effectively improved.
Detailed Description
The invention provides a laying hen feed additive which comprises the following components: vitamin A180-320 IU, vitamin D 3 40-120 IU, 4-12 mg of organic iron, 260-320 IU of xylanase, 0.2-0.6 g of eucommia ulmoides, 0.1-0.5 g of angelica sinensis, 0.1-0.3 g of astragalus membranaceus and 0.5-2 g of montmorillonite.
Eucommia bark, the bark of eucommia ulmoides oliv of eucommia genus of eucommia family Eucommiaceae, has the effects of nourishing liver and kidney, strengthening tendons and bones, and preventing miscarriage, and is mainly used for treating lumbago due to kidney deficiency and various lumbago, threatened abortion.
Chinese angelica, the root of Angelica sinensis of Angelica of Umbelliferae, has the effects of replenishing blood, regulating menstruation, promoting blood circulation, relieving pain, loosening the bowel to relieve constipation, and is mainly used for treating blood deficiency, chlorosis, irregular menstruation, amenorrhea, dysmenorrhea, blood deficiency, blood stagnation, pain due to blood cold, traumatic injury, rheumatic arthralgia, superficial infection, pyocutaneous disease, intestinal dryness, constipation, etc.
Astragalus membranaceus, the root of Astragalus membranaceus bge or Astragalus membranaceus bge of Astragalus of Leguminosae, has the effects of invigorating spleen and strengthening middle warmer, lifting yang and sinking, benefiting defense and consolidating superficial resistance, inducing diuresis, and expelling toxin and promoting granulation, and is mainly used for treating spleen qi deficiency syndrome, lung qi deficiency syndrome, qi deficiency and spontaneous perspiration syndrome, qi and blood deficiency, sore and ulcer difficult to ulcerate and rot, difficult to heal for a long time, and the like.
Montmorillonite is used as gastrointestinal mucosa protectant and antidiarrheal agent for treating acute and chronic diarrhea in children and adults.
The organic iron can be selected from one or two of ferrous glycinate and ferrous fumarate, and is preferably a mixture of ferrous glycinate and ferrous fumarate.
When the feed is used for feeding laying hens of 350-450 days old, the feed components also comprise vitamin B 4 80-120 mg of saccharomyces cerevisiae and 80-120 ten thousand cfu of saccharomyces cerevisiae.
More preferably, the feed components comprise 200-260 IU of vitamin A and D of vitamin D 3 50-80 IU, 5-8 mg of organic iron, 280-300 IU of xylanase, 0.3-0.4 g of eucommia ulmoides, 0.1-0.3 g of angelica sinensis, 0.1-0.2 g of astragalus membranaceus, 1-1.5 g of montmorillonite and vitamin B 4 90-100 mg of saccharomyces cerevisiae and 90-100 ten thousand cfu of saccharomyces cerevisiae.
When the feed is used for feeding 451-600-day-old laying hens, the feed components further comprise 80-120 mg of choline chloride, 4-6 hundred million cfu of butyric acid bacteria and 8-12 hundred million cfu of bacillus subtilis.
More preferably, the feed components comprise 260-300 IU of vitamin A and D of vitamin D 3 90-100 IU, 9-11 mg of organic iron, 280-300 IU of xylanase, 0.4-0.5 g of eucommia ulmoides, 0.3-0.4 g of angelica sinensis, 0.2-0.3 g of astragalus membranaceus, 1-1.5 g of montmorillonite, 90-100 mg of choline chloride, 4.5-5 hundred million cfu of butyric acid bacteria and 9-10 hundred million cfu of bacillus subtilis.
In general, the reproductive system and intestinal function of the laying hens begin to degenerate after 380 days, and the laying hens show later-stage comprehensive symptoms, such as the beginning of egg breakage, light-colored eggs, thin manure and overfeeding problems. Aiming at the laying hens at the stage, the vitamin A is adopted to repair epithelial cells of intestinal tracts and reproductive systems; with vitamin D 3 Can promote calcium absorption and metabolism; organic iron is adopted to supplement iron and enrich blood; with vitamin B 4 The metabolic burden of the liver can be reduced; the saccharomyces cerevisiae can regulate the balance of intestinal flora and the internal environment; the xylanase is adopted to help the decomposition of xylan in the plant daily ration, release nutrient substances, reduce the viscosity of excrement and is beneficial to intestinal health; the eucommia bark, the angelica and the astragalus are adopted to supplement qi and blood and improve the immunity of the organism; montmorillonite can adsorb toxins produced by metabolism and mold in intestinal tract.
With the continuous aging of the laying hens, the degeneration of the intestinal tracts, the oviducts and the liver of the laying hens is further aggravated after the laying hens reach 450 days of ageThe laying rate is obviously reduced to below 85 percent, broken eggs, preserved sand eggs and light-colored eggs are obviously increased greatly, the chicken flock can have symptoms of fatty liver, liver swelling and the like, and the laying hens can die continuously and sporadically. Aiming at the condition that the laying hens at the stage are seriously aged, the invention adopts vitamin A and vitamin D 3 Organic iron further increases supply of vitamins and organic iron, counteracts effects of aging and organ deterioration on organism and production performance, and continuously adds vitamin B 4 Can promote liver metabolism; the environment in the intestinal tract can be adjusted by adding the butyric acid bacteria and the bacillus subtilis, the pH value of the intestinal tract is adjusted by lactic acid produced by the butyric acid bacteria, and the reproduction and survival of harmful aerobic bacteria in the intestinal tract can be reduced by the aid of the competitive oxygen consumption function of the bacillus subtilis in the intestinal tract; the xylanase is adopted, so that the decomposition of xylan in the plant daily ration can be further promoted, nutrient substances are released, the viscosity of excrement is reduced, and the intestinal health is benefited; the dosage of the eucommia bark, the angelica and the astragalus is further increased, so that the eucommia bark, the angelica and the astragalus can be used for tonifying qi and blood of laying hens in the later period and improving the immunity of organisms; montmorillonite can adsorb toxins produced by metabolism and mold in intestinal tract.
The feed additive is reasonably proportioned according to the characteristics of the laying hens at different days, can effectively improve the digestion and absorption capacity of intestinal tracts at the later laying period of the laying hens, improves the immunologic function, the metabolic function and the secretion function of reproductive systems of the laying hens, and ensures the absorption of feed nutrients at the later laying period of the laying hens, so that the quality of eggshells at the later laying period of the laying hens can be obviously improved, and the problems of overfeeding, fatty liver and the like at the later laying period of the laying hens are reduced.
The invention also provides a preparation method of the additive, which comprises the following steps: pulverizing Eucommiae cortex, radix Angelicae sinensis, and radix astragali respectively, steaming, and mixing with other raw materials at a certain proportion.
The eucommia ulmoides, the angelica sinensis and the astragalus membranaceus are respectively ground and sieved by a 30-50-mesh sieve, and more preferably a 40-mesh sieve. As an optional implementation mode, the invention adopts a hammer mill with a 1.5mm aperture to carry out crushing treatment and then passes through a 30-50 mesh sieve.
The invention carries out steam treatment on the treated eucommia bark, angelica and astragalus powder, wherein the steam treatment conditions are as follows: the steam pressure is 0.3-0.5 MPa, the steam temperature is 80-85 ℃, and the treatment time is 4-6 min. More preferably, the steam pressure is 0.4MPa, the steam temperature is 82-84 ℃, and the treatment time is 5 min.
The invention can promote the effective components in the traditional Chinese medicine to be separated out after crushing and steam treatment of the eucommia bark, the angelica and the astragalus, and is beneficial to improving the digestibility of the laying hens to the feed and the intake rate of the laying hens to the nutrition of the feed.
The invention is prepared by uniformly mixing the processed eucommia bark, angelica and astragalus with other components according to a proportion.
The invention also provides an application of the additive in improving the egg yield and/or the egg quality of laying hens in the later period of egg laying, wherein the dosage of the additive is 2-3% of the mass of the basic feed, preferably 2.2-2.8%, and more preferably 2.4-2.5%.
The feeding time of the additive provided by the invention to laying hens of different days is different, and in the stage of 350-450 days old, the feeding time of the additive is 15 in the afternoon every day: 00-17: feeding at the 00 stage; at the 451-600 days old stage of the laying hens, the weight ratio of the laying hens in the morning is 7: 30-11: 00 and 15 pm: 00-17: feeding at stage 00, preferably 7: 30-11: 00 and 15 pm: 00-17: feeding 40-60% of feed amount in the 00 stage.
The invention discovers that the feeding time of the laying hens can obviously improve the feeding effect. The egg shell forming time of the laying hens is from the first night to the second morning, the feeding time is selected according to the laying hens of different ages in days, so that the laying hens can be guaranteed to be capable of supplementing sufficient nutrition in the egg shell forming time stage in the egg laying later period, the feed digestibility and the nutrition uptake rate of the laying hens are improved, the problems of overfeeding, fatty liver and the like in the egg laying later period of the laying hens are reduced, and the egg shell quality in the egg laying later period is remarkably improved.
The technical solutions provided by the present invention are described in detail below with reference to examples, but they should not be construed as limiting the scope of the present invention.
In the specific embodiment of the invention, the saccharomyces cerevisiae is a fubang brand feed grade commodity of 200 hundred million cfu/g, purchased from angu yeast, inc; the butyric acid bacteria are 50 hundred million cfu/g feed-grade commodities and are purchased from Qingdao root biotechnology group limited company; the bacillus subtilis is a commercial product of 1000 hundred million cfu/g and is purchased from Yangshao biotechnology limited company in Henan province; xylanase is a feed grade 10 ten thousand IU/g commercial product purchased from Beijing Xin ocean Biotechnology Co., Ltd.
Example 1
The embodiment provides a laying hen feed additive which consists of the following components: vitamin A300IU, vitamin D 3 50IU, 5mg of organic iron, 280IU of xylanase, 0.4g of eucommia bark, 0.3g of angelica, 0.1g of astragalus and 1.5g of montmorillonite. Wherein the organic iron is 60 percent of ferrous glycinate and 40 percent of ferrous fumarate.
The preparation method of the laying hen feed additive comprises the following steps: crushing eucommia ulmoides, angelica sinensis and astragalus membranaceus by using a hammer crusher with the aperture of 1.5mm, and then sieving by using a 40-mesh sieve; processing Eucommiae cortex, radix Angelicae sinensis, and radix astragali powder at 84 deg.C under 0.4MPa for 5min, and mixing with other components.
Example 2
This example differs from example 1 in that it consists of the following components: feed vitamin A200IU, vitamin D 3 110IU, 10mg of organic iron, 310IU of xylanase, 0.3g of eucommia bark, 0.4g of angelica, 0.1g of astragalus and 1g of montmorillonite. Wherein the organic iron is 60 percent of ferrous glycinate and 40 percent of ferrous fumarate.
The preparation method of the laying hen feed additive is the same as that of example 1.
Example 3
This example is the same as the feed additive composition of example 1;
the difference lies in that the preparation method of the laying hen feed additive comprises the following steps: crushing eucommia ulmoides, angelica sinensis and astragalus membranaceus by using a hammer crusher with the aperture of 1.5mm, and then sieving by using a 50-mesh sieve; processing Eucommiae cortex, radix Angelicae sinensis, and radix astragali powder at 82 deg.C under 0.5MPa for 4min, and mixing with other components.
Example 4
This example differs from example 1 in that it consists of the following components: vitamin A200IU, vitamin D 3 50IU, 5mg of organic iron, 300IU of xylanase, 0.3g of eucommia bark, 0.1g of angelica, 0.1g of astragalus, 1g of montmorillonite and vitamin B 4 100mg, 100 ten thousand cfu of saccharomyces cerevisiae. Wherein the organic iron is 60 percent of ferrous glycinate and 40 percent of ferrous fumarate.
The preparation method of the laying hen feed additive is the same as that of example 1.
Example 5
This example differs from example 1 in that it consists of the following components: vitamin A300IU, vitamin D 3 100IU, 10mg of organic iron, 300IU of xylanase, 0.5g of eucommia, 0.3g of angelica, 0.2g of astragalus, 1g of montmorillonite, 100mg of choline chloride, 5 hundred million cfu of butyric acid bacteria and 10 hundred million cfu of bacillus subtilis. Wherein the organic iron is 60 percent of ferrous glycinate and 40 percent of ferrous fumarate.
The preparation method of the laying hen feed additive is the same as that of example 1.
Example 6
In the embodiment, the laying hen feed additive prepared in the embodiment 4-5 is selected for experimental verification.
900 Hailan brown-shell laying hens of 350 days old in the same batch are selected, randomly divided into three groups which are a control group, an experimental group 1 and an experimental group 2, and subjected to single-factor control experiments. A control formula (a conventional basic formula) is used in the whole course from 350-600 days old in the control group; the experimental group 1 adds the product 1 at the age of 350-450 days, and adds the product 2 at the age of 451-600 days; the control formula is used in the experimental group 2 at the age of 350-450 days, and the product 2 is used from the age of 451-600 days. In the stage of 350-450 days old of laying hens, 15% in the afternoon every day: 00-17: feeding at the 00 stage; at the 451-600 days old stage of the laying hens, the weight ratio of the laying hens in the morning is 7: 30-11: 00 and 15 pm: 00-17: 50% of the feed is fed in the stage 00 respectively.
The formula of the control group is as follows: 62 percent of corn, 2.5 percent of bran, 22 percent of soybean meal, 8.5 percent of calcium carbonate, 5 percent of laying hen premix (comprising compound vitamin, compound trace elements, methionine, lysine, salt, calcium, phosphorus and carrier), and the total amount is 100 percent.
The formula of the product 1 is as follows: 2.5% of the feed additive prepared in example 4 was mixed with the control formulation.
Product 2 formula: 2.5% of the feed additive prepared in example 5 was mixed with the control formulation.
The laying rate, egg weight, feed intake, incidence rate of unqualified eggs (unqualified eggs include soft shell, broken shell, blood spot, and white shell egg), death and culling rate, passing rate, and incidence rate of fatty liver of each group were observed and calculated, and the results are shown in Table 1.
TABLE 1 comparison of the effects of egg production and egg quality in each group
Figure BDA0003644594470000071
Note: the difference is obvious when the same line is marked with different letters (P <0.05)
As can be seen from Table 1, the laying rate and the egg weight of the layer chickens in the experimental group 1 are higher than those of the control group, and the average daily feed intake, the unqualified egg incidence, the death and culling rate, the material passing rate and the fatty liver incidence are also reduced; the difference between the laying hens in the stage of 350-450 days old and the control group in the experimental group 2 is not large, the laying rate and the egg weight are higher than those of the control group in the stage of 451-600 days old, and meanwhile, the average daily feed intake, the unqualified egg occurrence rate, the death and culling rate, the overfeeding rate and the fatty liver occurrence rate are all reduced, but the effect is slightly worse than that of the experimental group 1 in general. The feed additive is added into the daily ration of the laying hens, so that the laying rate and the egg quality can be effectively improved, the feed intake of the feed is reduced, the unqualified egg incidence rate is reduced, and the death and culling rate, the overfeeding rate and the incidence rate of fatty liver are reduced.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and amendments can be made without departing from the principle of the present invention, and these modifications and amendments should also be considered as the protection scope of the present invention.

Claims (10)

1. The laying hen feed additive is characterized by comprising the following components: vitamin A180-320 IU, vitamin D 3 40-120 IU, 4-12 mg of organic iron, 260-320 IU of xylanase and 0 part of eucommia bark2-0.6 g, 0.1-0.5 g of angelica, 0.1-0.3 g of astragalus and 0.5-2 g of montmorillonite.
2. The additive according to claim 1, wherein the additive further comprises vitamin B when fed to laying hens aged 350 to 450 days 4 80-120 mg of saccharomyces cerevisiae and 80-120 ten thousand cfu of saccharomyces cerevisiae.
3. The additive according to claim 1, wherein the additive further comprises 80-120 mg of choline chloride, 4-6 hundred million cfu of butyric acid bacteria and 8-12 hundred million cfu of bacillus subtilis when used for feeding 451-600-day-old laying hens.
4. The method for preparing the additive according to any one of claims 1 to 3, wherein the eucommia ulmoides, the angelica sinensis and the astragalus membranaceus are respectively ground and subjected to steam treatment, and then are mixed with other raw materials in proportion.
5. The preparation method according to claim 4, wherein the eucommia ulmoides, the angelica sinensis and the astragalus membranaceus are ground and sieved by a 30-50-mesh sieve.
6. The production method according to claim 4, wherein the steam treatment conditions are: the steam pressure is 0.3-0.5 MPa, the steam temperature is 80-85 ℃, and the treatment time is 4-6 min.
7. Use of the additive according to any one of claims 1 to 3 for improving the egg yield and/or the egg quality of laying hens in the later period of laying.
8. The use according to claim 7, wherein the additive is used in an amount of 2-3% by mass of the basal feed.
9. The use according to claim 7, wherein in the 350-450 day old stage of laying hens, 15: 00-17: feeding at stage 00.
10. The use according to claim 7, wherein at the 451-600 day old stage of laying hens, 7: 30-11: 00 and 15 pm: 00-17: feeding at stage 00 respectively.
CN202210526513.0A 2022-05-16 2022-05-16 Laying hen feed additive and preparation method and application thereof Pending CN114886040A (en)

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CN106923040A (en) * 2017-03-06 2017-07-07 徐州科星科技发展有限公司 A kind of egg feedstuff for extending laying period and preparation method thereof
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