CN101449746A - Feedstuff for laying hens and use thereof in producing laying hens - Google Patents
Feedstuff for laying hens and use thereof in producing laying hens Download PDFInfo
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- CN101449746A CN101449746A CNA200710193007XA CN200710193007A CN101449746A CN 101449746 A CN101449746 A CN 101449746A CN A200710193007X A CNA200710193007X A CN A200710193007XA CN 200710193007 A CN200710193007 A CN 200710193007A CN 101449746 A CN101449746 A CN 101449746A
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- 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 discloses forage for laying hen and application thereof in laying hen production. The forage is prepared by following weight of components: 50-53 parts of corn, 12-18 parts of middle protein soybean meal, 4-6 parts of cotton meal, 4-6 parts of corn DDGS, 9-10 parts of stone powder, 0.8-1.2 parts of meat bone meal, 11-15 parts of biological protein forage and 0.8-1.2 parts of 1% laying hen premix. The biological protein forage provided by the present invention is light brown forage raw material with high quality, high energy and high protein, and has concentrated fragrance and strong palatability, so animal likes the forage. Content of thalline protein, peptide and free amino acid of the forage is high, and nutrient composition absorptivity is high. Simultaneously the raw material contains a large amount of beneficial microorganism and unknown growth factor, thereby improving micro-ecological environment in intestinal tract, increasing resistivity and disease resistance of animal, and reducing content of antibiotic medicament in the forage.
Description
Technical field
The present invention relates to a kind of feedstuff for laying hens, relate in particular to a kind of feedstuff for laying hens, also relate to the application of a kind of this feed in laying hen produces simultaneously with novel energy raw material substitution corn.
Background technology
In recent years, increase along with industrial consumption, corn price significantly promotes, and reaches nearly 10 a years historical high position, as the primary raw material of aquaculture, corn cost sharp rises, and to have promoted animal products price one tunnel high, according to the information that the Ministry of Agriculture announces, 1-October of this year, corn price remained on more than 1.65 yuan in continuous 10 months, and average price is 1.68 yuan, compared with the same period of last year, the corn price amount of increase reaches 20.3%; Growing and fattening pigs, fryer, laying-hen compound feed price also have rise in various degree, and amount of increase is respectively 3.1% and 10.4%, 7.3%, 8.1%.In the recent period, corn producing region storage reduces, peasant's rare sale psychology obviously strengthens, and the rise impetus has appearred in spot price.Feedstuff industry is the main body of corn consumption, and 70% of corn demand is used for the aquaculture feedstuff, and corn accounts for 50%-60% of feed total amount, and corn price has determined feed cost.Nearly 2 years, because the influence of factors such as epidemic situation and corn price continuous rise, the breeding enterprise profit descends, the livestock on hand rate is lower, it is not positive that the raiser mends the hurdle, thereby caused occurring at present the situation that the pork price sharp rises, and the pork selling price in domestic many areas has met or exceeded historical higher level, the pork price has risen to more than 10 yuan/jin, so country's appearance policy of having to suppresses the pig valency and goes up.Spurred by the market price, raise the family enthusiasm for production and progressively recover, the raiser piglet is mended the hurdle degree of progress speed, and breeding stock begins to increase.Be subjected to the stimulation of current main animal products price situation advantage, the corn feed demand also will progressively increase, and this walked to constitute sharp support to the corn later stage.In addition, the energy characteristics of corn is urged the grain price that rises, and corn becomes as multi-field raw materials of industry such as starch, lysine, alcohol fuels from traditional grain, feed industry raw material.Last year, the main actual working ability of corn processing enterprise in the Northeast has broken through 1,000 ten thousand tons.Along with the continuous expansion of production capacity, processing enterprise replaces the leading role that grain depot becomes northeast corn purchase market just gradually.And, influence the also corresponding increase of market parameter of its price trend along with the transformation gradually of this identity of corn.This variation is particularly evident at American market.At present, the alcohol annual capacity of the U.S. is approximately 51.2 hundred million gallons, and this need expend a large amount of corns, has directly influenced the price of international corn.And the present industrial requirement of China also increases fast, and some domestic enterprises that comprise COFCO are all in the development prospect of having an optimistic view of bio-fuel.So in the aquaculture fast development, for solving the contradiction that following corn use amount and supply resource lack, it is imperative to seek a kind of suitable corn alternative materials.
At present, people attempt substituting maize raw material with a kind of suitable raw material in pig feed production, below are the good and bad situation analysis of several replacement raw materials:
The nutritional labeling contrast (%) of wheat and corn
Also obviously there is following shortcoming in wheat class raw material substitution corn: the 1. low (wheat 1.70% of crude fat content, and corn 3.60%), energy and linoleic acid content are lower than corn, linoleic acid only 0.8% in the wheat, linoleic acid has 2.0% in the corn, do not contain lutein in the wheat, and contain abundant lutein (22mg/kg) in the yellow maize, lutein can be deposited in fat, skin and the yolk.Using needs to add mixing-in fat to regulate energy and linoleic content in daily ration, lutein is then replenished by adding clover or corn protein powder.2. the wheat daily ration of feeding must be noted that the interpolation of biotin.Biotin content total in the wheat is than corn height, but utilization rate is lower.3. the ANFs of wheat mainly is a SNSP, can form viscogel after SNSP is water-soluble, causes that the viscosity of gastrointestinal content increases, and hinders the digestion and the absorption of nonruminant to nutriment.Chicken is negative correlativing relation to non-starch polysaccharide digestibility very low (12%) between non-starch polysaccharide content and the metabolizable energy.Xylan can be utilized by the rear intestinal microorganism simultaneously, causes microbial growth, thus problems such as generation diarrhoea.Adopt the wheat type daily ration to need in prescription, to add in addition complex enzyme formulation.4. the price difference that depends on wheat and corn.The price general charged difference can consider to use wheat at 100 yuan/ton hour, and in most time, the price of wheat generally will be higher than corn price.
Potato class (Ipomoea batatas, potato, cassava and any of several broadleaf plants lotus root) raw material
The potato class is a high-yield crop, and piece root (stem) is rich in starch, can make high-energy feed, and development and use potato class resource to alleviating the contradiction that people and animals strive grain, has important realistic meaning.Contain pancreas egg hundred enzyme inhibitors in the bright potato piece root, so the ripe better effects if of raising of need when using.It is reported that the feeding value of general bright potato piece root is 25%～30% of a corn, promptly 4 kilograms of alternative 1 kilogram corns of bright potato piece root feed pigs.After the Ipomoea batatas section is dried, be ground into sweet potato powder, replenish necessary mineral matter element and amino acid, its feeding value approaches corn.Condition restriction when using in view of such raw material, it is more that feed circle uses the report that substitutes corn in pig feed at present, and the report in the chicken feed does not also have.
Summary of the invention
The object of the present invention is to provide a kind of feedstuff for laying hens,, reduce production costs to adopt novel energy raw material substitution corn.
In addition, the present invention also aims to provide the application of a kind of this feed in laying hen produces.
To achieve these goals, technical scheme of the present invention has adopted a kind of feedstuff for laying hens, is prepared from by the component of following parts by weight: 50-53 parts of corns, 12-18 parts of middle albumen dregs of beans, 4-6 parts of cotton dregs, 4-6 parts of corn DDGS, 9-10 parts of stone flours, 0.8-1.2 parts of meat meal tankages, 11-15 parts of biological protein feedstuffs, 0.8-1.2 parts of 1% laying hen premixes.
Described biological protein feedstuff is based on the byproduct in the Alcohol Production---separation and fermentation liquid DDS, handle wherein lactic acid and sugar biodegrade and obtain by adding functional lactobacillus and saccharomycete.
Moisture is 8-12% in the described biological protein feedstuff.
Described 1% laying hen premix comprises vitamin, trace element, amino acid, salt.
Simultaneously, technical scheme of the present invention has also adopted the application of a kind of this feed in laying hen produces, to substitute the use of corn.
Alternative materials biological protein feedstuff of the present invention is with the byproduct in the Alcohol Production---and separation and fermentation liquid DDS (Distiller ' s Dried Soluble, the filtrate evaporation and concentration, the distiller's dried grain of dry back gained) be the basis, wherein lactic acid and sugar biodegrade are handled obtained by adding functional lactobacillus and saccharomycete, do not contain any ANFs and poisonous in it, harmful substance, adopt fermentation process simultaneously, form useful animal use and the bioorganic feed that improves animal palatability and utilization rate, the raiser can relievedly courageously directly use, and need not to add other feed addictives such as enzyme preparation.Environmental protection, nuisanceless.Contain multiple in the biological protein feedstuff to livestock and poultry and human health beneficial probiotic, lactic acid bacteria is converted into lactic acid the utilizable carbon source of saccharomycete in the process of decomposing lactic acid, make the utilization of resources more abundant, lactic acid bacteria transforms CLA with linoleic acid in the aliphatic acid in the vinasse simultaneously, effectively reduce the cholesterol level in the livestock products, increase the immunity of animal, improve production performance, and can be indirectly by the human use, very useful to human health.In addition, product utilization rate height of the present invention, its alternative materials of using is that DDS is again through the material of post precipitation, contained crude fibre is lower, and it is higher to contain sugar, crude protein and fat, passes through fermentation process simultaneously again, wherein macromolecular substances effectively is converted into available mycoprotein, polypeptide and amino acid etc., add the improvement to function of intestinal canal of inner saccharomycete and lactic acid bacteria, make the fine in vivo utilization of nutriment, absorptivity is higher.By carrying out the metabolism experiment, its chicken digestibility is 89.7%.Production cost of the present invention is low, raw material resources abundance, price steadiness, the fermentation substrate that is adopted (DDG) is before untapped, rarer, more sticking because of it, there is not any value for Alcohol Plant, this material can both produce up to a hundred tons of deposited materials every day, takies big quantity space, and former oily Alcohol Plant can only do cheap the processing.Company handles by technical transform, and it is turned waste into wealth, and has promptly alleviated the in short supply of aquaculture corn resources, has reduced aquaculture cost again, is to achieve many things at one stroke.
In addition, corn DDGS of the present invention is a kind of high protein feed, is that its protein content surpasses 28%-32% with the solid residue behind the fermentation method production corn alcohol.
Biological protein feedstuff among the present invention is a kind of pale brown look high-quality high energy, high protein feed raw material, and ferment fragrance is denseer, and palatability is strong, and animal is liked searching for food.Wherein mycoprotein, peptide class, free aminoacid content height, nutritional labeling absorptivity height.This raw material contains a large amount of useful little living bacterium and UGF simultaneously, can improve micro-ecological environment in the enteron aisle, animal resistivity height, and premunition is strong, can reduce in the feed or without antibiotics.It is with the byproduct in the Alcohol Production-separation and fermentation liquid DDS (Distiller ' s Dried Soluble, the distiller's dried grain of filtrate evaporation and concentration, dry back gained) be the basis, by adding functional lactobacillus and saccharomycete wherein lactic acid and sugar biodegrade are handled, its nutritional labeling and utilization rate are improved greatly, production technology is by the secondary drying technology, promptly when high-moisture, dry with low-temperature airflow, moisture is reduced to about 25%, use the instantaneous oven dry of steam again, time is no more than 3 seconds, and moisture is dropped to about 10% rapidly.
Biological protein feedstuff and corn product index contrast (%)
From table, can see, compare with corn, biological protein feedstuff all is being better than corn aspect the leading indicators such as crude protein, total energy and crude fat, as a kind of energy feed source, have remarkable advantages, simultaneously, the biological protein feedstuff cost is lower, the market price is at 1.45 yuan/kilogram, far below the price of 1.7 yuan/kilogram of corns in the market.
In order to verify that biological protein feedstuff substitutes the feasibility of corn, company selects 5000 scale laying hen fields, Yingyang to carry out two months by a definite date preliminary examination, and the user reflects that effect is pretty good, this test concrete scheme and the result as follows:
1 materials and methods
1.1 biological protein feedstuff, crude protein index 24.8%, crude fat: 5.23%.
1.2 test selects meter to establish and feeding and management
Test selects 52 ages in week of glimmering positive laying hen field with 4800 of the healthy Luo Man chickens of house, be divided into two groups at random: control group, test group, every group of 5 repetitions, 480 chickens of every repetition, control group fed does not have the interpolation biological protein feedstuff, test group is adjusted on the basis of control group and is added biological protein feedstuff 10%, and test group and control group trophic level are consistent.Raise 3 days phases in advance, just trying 60 days phases.
Result of the test:
The result shows that egg laying performance difference is not remarkable between each processed group; Result of the test sees the following form:
Economic and Efficiency Analysis
Can see by the Economic and Efficiency Analysis result, adopt biological protein feedstuff to substitute 10% corn, the per kilogram feed can reduce 0.06 yuan of input, the per kilogram egg can be increased income 0.13 yuan, calculates 10000 scale chicken houses with this, can produce about 550 kilograms in egg average every day, can increase benefit every day more than 71.5 yuan, can increase income 2145 yuan in every month, synergy is very considerable.
The specific embodiment
Embodiment 1
Feedstuff for laying hens of the present invention is prepared from by the component of following parts by weight: 50 parts of corns, 15 parts of middle albumen dregs of beans, 6 parts of cotton dregs, 6 parts of corn DDGS, 10 parts of stone flours, 0.8 part of meat meal tankage, 11 parts of biological protein feedstuffs, 1.2 parts of 1% laying hen premixes.Wherein, biological protein feedstuff is based on the byproduct in the Alcohol Production---separation and fermentation liquid DDS, wherein lactic acid and sugar biodegrade are handled obtained by adding functional lactobacillus and saccharomycete, moisture is 8% in the biological protein feedstuff.
Embodiment 2
Feedstuff for laying hens of the present invention is prepared from by the component of following parts by weight: 51.8 parts of corns, 15 parts of middle albumen dregs of beans, 5 parts of cotton dregs, 4 parts of corn DDGS, 9.2 parts of stone flours, 1 part of meat meal tankage, 13 parts of biological protein feedstuffs, 1 part of 1% laying hen premix.Wherein, biological protein feedstuff is based on the byproduct in the Alcohol Production---separation and fermentation liquid DDS, handle wherein lactic acid and sugar biodegrade and obtain by adding functional lactobacillus and saccharomycete.Moisture is 10% in the biological protein feedstuff.
It should be noted last that: above embodiment is only in order to explanation, and unrestricted technical scheme of the present invention, although the present invention is had been described in detail with reference to the foregoing description, those of ordinary skill in the art is to be understood that: still can make amendment or be equal to replacement the present invention, and not breaking away from any modification or partial replacement of the spirit and scope of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (5)
1, a kind of feedstuff for laying hens is characterized in that: the component by following parts by weight is prepared from: 50-53 parts of corns, 12-18 parts of middle albumen dregs of beans, 4-6 parts of cotton dregs, corn DDGS4-6 part, 9-10 parts of stone flours, 0.8-1.2 parts of meat meal tankages, 11-15 parts of biological protein feedstuffs, 0.8-1.2 parts of 1% laying hen premixes.
2, feedstuff for laying hens according to claim 1, it is characterized in that: described biological protein feedstuff is based on the byproduct in the Alcohol Production---separation and fermentation liquid DDS, handle wherein lactic acid and sugar biodegrade and obtain by adding functional lactobacillus and saccharomycete.
3, feedstuff for laying hens according to claim 2 is characterized in that: moisture is 8-12% in the described biological protein feedstuff.
4, according to arbitrary described feedstuff for laying hens in the claim 1-3, it is characterized in that: described 1% laying hen premix comprises vitamin, trace element, amino acid, salt.
5, the application of a kind of feed as claimed in claim 1 in laying hen produces is to substitute the use of corn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710193007XA CN101449746B (en) | 2007-11-30 | 2007-11-30 | Feedstuff for laying hens and use thereof in producing laying hens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710193007XA CN101449746B (en) | 2007-11-30 | 2007-11-30 | Feedstuff for laying hens and use thereof in producing laying hens |
Publications (2)
| Publication Number | Publication Date |
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| CN101449746A true CN101449746A (en) | 2009-06-10 |
| CN101449746B CN101449746B (en) | 2011-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200710193007XA Expired - Fee Related CN101449746B (en) | 2007-11-30 | 2007-11-30 | Feedstuff for laying hens and use thereof in producing laying hens |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102106487A (en) * | 2011-02-01 | 2011-06-29 | 大连韩伟养鸡有限公司 | Biological fermentation feed for laying chickens and production method |
| CN102429108A (en) * | 2011-10-25 | 2012-05-02 | 陕西大秦汉集团有限公司 | Viable microbe fermentation compound feed for layer chickens in laying period and production method thereof |
| CN102907587A (en) * | 2012-11-13 | 2013-02-06 | 河南商都生物技术股份有限公司 | Compound feed for laying hens in egg-laying peak period and preparation method thereof |
| CN103039754A (en) * | 2013-01-14 | 2013-04-17 | 河南商都生物技术股份有限公司 | Compound feed for improving production performance of laying hen and egg quality |
| CN103518987A (en) * | 2013-08-27 | 2014-01-22 | 安徽省瑞森生物科技有限责任公司 | Corn protein chicken feed and preparation method thereof |
| CN104082614A (en) * | 2014-06-16 | 2014-10-08 | 安徽省希久养殖有限责任公司 | High nutritional chicken feed formula and preparation method thereof |
| CN104082560A (en) * | 2014-06-11 | 2014-10-08 | 马鞍山市五谷禽业专业合作社 | High-protein chicken feed recipe and preparing method of high-protein chicken feed |
| CN104082612A (en) * | 2014-06-16 | 2014-10-08 | 安徽省希久养殖有限责任公司 | Formula of high-protein chicken feed and preparation method thereof |
| CN104770595A (en) * | 2015-04-02 | 2015-07-15 | 覃春燕 | Winter used chicken feed for the egg laying period |
| CN105146154A (en) * | 2015-08-26 | 2015-12-16 | 蚌埠经济开发区燕山养殖场 | High-protein feed additive special for laying chicken and preparation method thereof |
| CN106615905A (en) * | 2016-09-18 | 2017-05-10 | 山东新希望六和集团有限公司 | Non-bean meal compound feed for laying hens and preparation method thereof |
| CN107156525A (en) * | 2017-06-29 | 2017-09-15 | 广西顺帆投资有限公司 | A kind of chicken feed of vinasse fermentation |
| CN107279557A (en) * | 2017-06-29 | 2017-10-24 | 广西顺帆投资有限公司 | A kind of selenium-rich duck feed of vinasse fermentation and preparation method thereof |
| CN107897526A (en) * | 2017-12-11 | 2018-04-13 | 毛贺来 | Poplar flower healthy ecology feed |
| CN108208346A (en) * | 2018-01-04 | 2018-06-29 | 西北农林科技大学 | Low-phosphorus full-price daily ration for laying hens in egg laying peak period and application of low-phosphorus full-price daily ration |
| CN110169493A (en) * | 2019-07-08 | 2019-08-27 | 天津市畜牧兽医研究所 | A kind of feed for increasing yolk color grade and improving laying rate of laying hen |
| CN110338304A (en) * | 2019-07-31 | 2019-10-18 | 田明炳 | A kind of biological fermentation feed and preparation method thereof that chicken immunity can be improved |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1269154A (en) * | 1999-04-02 | 2000-10-11 | 王洪章 | Concentrated layer feed |
| CN1795739A (en) * | 2004-12-20 | 2006-07-05 | 李延昶 | Green ecological feedstuff |
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2007
- 2007-11-30 CN CN200710193007XA patent/CN101449746B/en not_active Expired - Fee Related
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102106487B (en) * | 2011-02-01 | 2012-12-05 | 大连韩伟养鸡有限公司 | Biological fermentation feed for laying chickens and production method |
| CN102106487A (en) * | 2011-02-01 | 2011-06-29 | 大连韩伟养鸡有限公司 | Biological fermentation feed for laying chickens and production method |
| CN102429108A (en) * | 2011-10-25 | 2012-05-02 | 陕西大秦汉集团有限公司 | Viable microbe fermentation compound feed for layer chickens in laying period and production method thereof |
| CN102907587B (en) * | 2012-11-13 | 2013-07-10 | 河南商都生物技术股份有限公司 | Compound feed for laying hens in egg-laying peak period and preparation method thereof |
| CN102907587A (en) * | 2012-11-13 | 2013-02-06 | 河南商都生物技术股份有限公司 | Compound feed for laying hens in egg-laying peak period and preparation method thereof |
| CN103039754B (en) * | 2013-01-14 | 2014-12-03 | 河南商都生物技术股份有限公司 | Compound feed for improving production performance of laying hen and egg quality |
| CN103039754A (en) * | 2013-01-14 | 2013-04-17 | 河南商都生物技术股份有限公司 | Compound feed for improving production performance of laying hen and egg quality |
| CN103518987A (en) * | 2013-08-27 | 2014-01-22 | 安徽省瑞森生物科技有限责任公司 | Corn protein chicken feed and preparation method thereof |
| CN103518987B (en) * | 2013-08-27 | 2015-05-20 | 安徽省瑞森生物科技有限责任公司 | Corn protein chicken feed and preparation method thereof |
| CN104082560A (en) * | 2014-06-11 | 2014-10-08 | 马鞍山市五谷禽业专业合作社 | High-protein chicken feed recipe and preparing method of high-protein chicken feed |
| CN104082614A (en) * | 2014-06-16 | 2014-10-08 | 安徽省希久养殖有限责任公司 | High nutritional chicken feed formula and preparation method thereof |
| CN104082612A (en) * | 2014-06-16 | 2014-10-08 | 安徽省希久养殖有限责任公司 | Formula of high-protein chicken feed and preparation method thereof |
| CN104770595A (en) * | 2015-04-02 | 2015-07-15 | 覃春燕 | Winter used chicken feed for the egg laying period |
| CN105146154A (en) * | 2015-08-26 | 2015-12-16 | 蚌埠经济开发区燕山养殖场 | High-protein feed additive special for laying chicken and preparation method thereof |
| CN106615905A (en) * | 2016-09-18 | 2017-05-10 | 山东新希望六和集团有限公司 | Non-bean meal compound feed for laying hens and preparation method thereof |
| CN107156525A (en) * | 2017-06-29 | 2017-09-15 | 广西顺帆投资有限公司 | A kind of chicken feed of vinasse fermentation |
| CN107279557A (en) * | 2017-06-29 | 2017-10-24 | 广西顺帆投资有限公司 | A kind of selenium-rich duck feed of vinasse fermentation and preparation method thereof |
| CN107897526A (en) * | 2017-12-11 | 2018-04-13 | 毛贺来 | Poplar flower healthy ecology feed |
| CN108208346A (en) * | 2018-01-04 | 2018-06-29 | 西北农林科技大学 | Low-phosphorus full-price daily ration for laying hens in egg laying peak period and application of low-phosphorus full-price daily ration |
| CN108208346B (en) * | 2018-01-04 | 2022-02-08 | 西北农林科技大学 | Low-phosphorus full-price daily ration for laying hens in egg laying peak period and application of low-phosphorus full-price daily ration |
| CN110169493A (en) * | 2019-07-08 | 2019-08-27 | 天津市畜牧兽医研究所 | A kind of feed for increasing yolk color grade and improving laying rate of laying hen |
| CN110338304A (en) * | 2019-07-31 | 2019-10-18 | 田明炳 | A kind of biological fermentation feed and preparation method thereof that chicken immunity can be improved |
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| CN101449746B (en) | 2011-08-31 |
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