1546results about How to "Reduce feeding costs" patented technology

The present invention relates to a piglet feed additive and a preparation method thereof, particularly to a weaned piglet feed additive with functions of feed utilization rate increase and piglet diarrhea reduction, and a preparation method thereof. In the prior art, piglets are easily subjected to diarrhea so as to affect feed intake and growth and development of piglets, and a piglet feed utilization rate is not high. To overcome the defects in the prior art, the present invention provides a new piglet feed additive, which does not contain antibiotics, and adopts probiotics, biological enzymes, amino acids and other materials as main components. After the piglet feed additive is added to a piglet feed, piglet diarrhea after weaning can be substantially relieved, a feed utilization rate can be significantly increased, and piglet growth and development conditions can be improved. In addition, the additive is suitable for popularization and application in the aquaculture industry.

The invention discloses a method for segregated early weaning of piglets, which comprises the steps of medicine adding, segregation, early transfer and the feeding of early weaning by piglet feed, wherein the medicine adding is performed before and after the delivery of a sow, the advanced medicine adding is used to kill off microorganisms which is expected to be killed, and the medicine adding is also performed from the birth of a suckling piglet to the weaning; the segregation adopts that the parturient sow is transferred into a clean farrowing house for delivery from the pregnancy, and the piglet at the age of between 10 and 14 days is transferred into a clean and comfortable breeding house from the farrowing house; when the level of a maternal antibody of the piglet at the age of between 10 and 14 days is in higher state, the piglet is moved away from the sow and is transferred into a cleaner environment; and the piglet feed for segregated early weaning adopts four stages to feed. The piglet has early weaning segregation time, high survival rate, and quick growth speed, the segregated early weaning of the piglet can save feeding cost of the sow, improve the yearly parity number of the sow, improve the utilization rate of the farrowing house, and reduce the probability that the piglet is infected with sow diseases, and a segregated early weaning technology of the piglet is suitable for the application of modern pig farms.

The invention provides a Chinese herbal medicine feed additive for chickens and a preparation method and application thereof. The preparation method comprises the following steps: using a plurality of natural Chinese herbal medicines as raw materials, crushing the Chinese herbal medicines in the formulation, leaching the effective components in the Chinese herbal medicines, adding the prepared additive the amount of which is 0.5 to 4 weight percent of the feeding mass in daily feeds for various chickens, feeding the chickens after stirring evenly, and discontinuously adding feed in the whole process. The feed additive has the advantages that the raw materials are scientific and reasonable, the preparation process has strong operability, and the prepared additive has the characteristics of trace, high efficiency, favorable palatability, safety and non-toxicity, can promote growth and development of the chickens remarkably, advances the marketing time, and reduce feed cost; the feed additive has the functions of excellent bacteria resistance, stress resistance and immunity improvement, reduces the occurrence of plagues, realizes healthy and non-resistant breeding in the whole process, and can produce green and good-quality chicken products without medicament residues.

The invention discloses a method for preparing biological fermentation feed for pigs, which comprises the following steps: (1) uniformly mixing EM raw liquid, brown sugar and water and then filling the mixture into a sealed container; standing to obtain EM raw liquid fermentation liquor; (2) mixing bean cake powder, bran and broken corn, adding the EM raw liquid fermentation liquor, fermenting, culturing and preparing a first fermenting product; (3) adding the first fermenting product into straw powder, bran and beer vinasse, and uniformly mixing, fermenting and culturing to prepare a second fermenting product; and (4) mixing the second fermenting product with a bean cake, the bran, fish powder, stone powder, citric acid and table salt to prepare the biological fermentation feed for pigs.The feed produced by the method is abundant in various beneficial microbes and can inhibit harmful bacteria, has better effects on preventing diseases and reducing the putrid odor of excrement and promote lignin and cellulose in raw materials to be decomposed into easily adsorbed saccharide, thereby reducing the breeding cost.

The invention discloses a CRISPR (clustered regularly interspaced short palindromic repeats) / Cas9 system and application thereof to construction of swine-derived recombinant cells with insulin receptor substrate gene defects. The invention provides an sgRNA (ribonucleic acid) combination which is composed of sgRNAIRS1-1, sgRNAIRS1-3, sgRNAIRS2-2 and sgRNAIRS2-3. The invention provides a plasmid combination. The plasmid combination is composed of four plasmids, and the four plasmids are respectively subjected to transcription to obtain sgRNAIRS1-1, sgRNAIRS1-3, sgRNAIRS2-2 and sgRNAIRS2-3. Theapplication of the sgRNA combination or the plasmid combination is as follows: preparation of recombinant cells; preparation of a diabetic cell model; preparation of a diabetic animal model. Accordingto the invention, sgRNAIRS1-1 is as shown in SEQ ID NO:8; sgRNAIRS1-3 is as shown in SEQ ID NO:10; sgRNAIRS2-2 is shown as SEQ ID NO:14; and sgRNAIRS2-3 is as shown in SEQ ID NO:15. A solid foundation is laid for the preparation of diabetic pig models, and important application value for the research and development of diabetic medicaments is achieved.

The invention provides a feed addictive which comprises the following plant raw materials (by weight portion): hyacinth bean 48-58, broomrape 26-36, lily 18-26, root of pilose asiabell 18-28, Siberian solomonseal rhizome 8-16, dipsacus root 8-16, astragalus root 18-28, Chinese yam 58-68, doddor seed 8-16, walnut 18-28 and hemp seeds 8-16.

The invention provides a method for manufacturing bio-organic fertilizers. Protease, saccharomycetes and lactobacillus are utilized for fermenting sawdust, straws, unite bran and pig manure to manufacture the organic fertilizer. The manufacturing procedures comprise the steps of: establishing of a pig house, selecting and matching raw materials, padding manufacturing, designing of a fermenting bed for feeding pigs, disinfecting culture gaps, post treatment of padding materials, disinfecting surfaces of padding materials after one batch of pig cultivation, turning over and mixing materials, supplying bacterium solution, and carrying out cultivation of pigs of next batch. The padding materials of the fermenting bed are cleared out of the pig house after being utilized for three years, adding bacterium solution and corn powder, stirring evenly, adjusting water content, pressing tightly, sealing, and fermenting for half of mouth, namely obtaining high-quality biological bacterial fertilizer. The method utilizes the bacterial solution to carry out fermentation of straws, sawdust, rice husks and pig manure, one part of the obtained mixture is ingested and absorbed by pigs, the unabsorbed part thereof is used as biological organic fertilizer for fully utilization, therefore, the method not only can reduce the feeding cost of the pig, but also can reduce culture pollution and provide high-quality biological organic fertilizers for the plant industry.

Composition and method for production of peroxycarboxylic acid solutions for various disinfection and cleaning compositions that utilizes non-equilibrium peroxycarboxylic acid. More specifically compositions comprise peracetic acid (PAA) and methods for making non-equilibrium PAA are provided. Frozen compositions useful as antimicrobial ice are provided.

The invention discloses a feces and urine separated type scraper blade feces cleaning system which comprises a longitudinal feces cleaning ditch and a feces scraping mechanism arranged in the feces cleaning ditch. The longitudinal feces cleaning ditch is obliquely arranged, a feces collecting ditch is arranged at the outlet of the high end of the longitudinal feces cleaning ditch, and a urine collecting ditch is arranged at the low end of the longitudinal feces cleaning ditch. When the feces scraping mechanism is used for cleaning feces, urine flows downwards into the urine collecting ditch under the gravity, feces enters the feces collecting ditch under the action of the feces scraping mechanism, the urine and the feces are automatically separated, and subsequent processing is facilitated.

The invention relates to a quantified feeding device for livestock raising, in particular to a quantified feeding device for livestock raising. The quantified feeding device achieves the technical purposes of being multifunctional and capable of well controlling the feed amount and saving feed. In order to achieve the technical purposes, the quantified feeding device for livestock raising comprises a base plate, a left frame, a first fixed pulley, a feed trough, a second fixed pulley, a sliding rail, a sliding block, a first motor, a reel, a rotating shaft, a spring, a stay wire, a guiding sleeve and the like. The top of the base plate is sequentially provided with the left frame, the first fixed pulley, the second fixed pulley and the feed trough from left to right. The effects of being multifunctional and capable of well controlling the feed amount and saving feed are achieved, the device manufacturing material is common and low in price, the feeding device can be arranged at various places of a livestock farm, and livestock can be conveniently fed in the livestock farm.

The invention discloses a staged desalinization culturing method for penaeus vannamei boone. The method comprises the steps such as selection of penaeus vannamei boone offspring seeds, a staged offspring seed desalting process, treatment on quality of offspring seed desalination water, treatment on quality of water in a culturing process, routine culture and management and the like. By utilizing the staged desalinization culturing method for penaeus vannamei boone provided by the invention, the problem that penaeus vannamei boone dies due to osmotic pressure change caused by salinity change is overcome, and the desalinization culturing of the penaeus vannamei boone is achieved, thus the method provided by the invention has important practical application value.

The invention relates to a feed composition for growing and fattening pigs in different growth stages and a feeding method thereof, and belongs to the technical field of pig feed. The feed composition is designed and developed in allusion to growth and development and nutrition demand characteristics in different growth stages of the pigs; complex feed varieties and feeding processes are shown through simple and direct numbers, so that the feeding efficiency in each stage can be effectively improved, the healthy growth of the pigs can be promoted, and feeding benefits can be enhanced.

The invention relates to a pig feed addictive and process for preparation, wherein the constituents include 25-50% of mixed probiotics, 60-75% of Chinese herb synergic agent, the mixed probiotics include Bacilluscereus 40%, saccharomycete 30% and lactic acid bacteria 30%, the Chinese herb synergic agent includes extracts of eucommia bark leaf 29-40%, astragalus root 29-40% or preserved haw 29-40%.

The invention provides a compound feed capable of improving the fatty liver and body colour of the marine fish. The compound feed comprises a premixed feed, a bile acid, curcumin and betaine, wherein the premixed feed comprises fish meal, soya bean meal, corn gluten meal, high protein flour, corn, shrimp shell meal, monocalcium phosphate, fish oil, liquid phosphatide, vitamin premixes, mineral premixes, and the like. Artificial marine-fish breeding experiments prove that the compound feed provided by the invention can meet the nutritional needs of marine-fish growth, effectively enhance the physique of the marine fish, improve the immunity of the marine fish, reduce the incidence of a fatty liver disease, and improve the body color of the marine fish, so that the body color of the marine fish is bright-colored and close to a wild natural color, thereby enhancing the quality of artificially cultured marine fish.

The invention discloses a concentrated feed containing Chinese herbal medicine for growing-finishing pig. The concentrated feed comprises soybean meal, fish meal, rapeseed meal, stone powder, calcium hydrogen phosphate, soybean oil, and premix; the following Chinese herbal medicine components are added into the concentrated feed: rhizoma atractylodis, processed fleece-flower root, gentian, tangerine peel, white peony root, parched medicated leaven, parched hawthorn, parched malt, medulla tetrapanacis, semen cuscutae, stir-fried betelnut, radix astragali, scutellaria, rhubarb powder, etc. The feed can improve the immunity, disease resistance, and stress resistance of growing-finishing pigs; the feed has improved quality, can enhance the appetite of the animals, and promote the digestion and the absorption; and the utilization rate of the feed is increased, and the breeding cost is reduced. The feed also has blood circulation invigorating, stomach-strengthening, parasite-expelling, and rapid fattening functions.

The invention provides an artificial diet for Lepidopterous young larvae. The artificial diet for the Lepidopterous young larvae is prepared from the following raw materials in percentage by weight: 2.0 to 3.0 percent of soybean cake meal, 7.0 to 10.0 percent of corn flour, 2.0 to 3.0 percent of Saccharomyces cerevisiae Hansen, 7.0 to 10.0 percent of tomato sauce, 0.8 to 1.2 percent of sucrose, 1.2 to 1.4 percent of agar, 0.2 to 0.5 percent of sorbic acid, 0.05 to 0.1 percent of vitamin B complex, 0.2 to 0.4 percent of ascorbic acid, 0.1 to 0.2 percent of ethyl p-hydroxybenzoate, 0.2 to 0.4 percent of propionic acid and 71.0 to 77.0 percent of water. The invention also provides a method for preparing the artificial diet and application of the artificial diet. The artificial diet is low in manufacturing cost, easy to operate and high in practicability; and by the artificial diet and the raising method for raising the Lepidopterous young larvae, the survival rate of the larvae is high, the workload is low, and manpower and material resources are greatly saved.

The invention relates to a cultivation method of spotted maigre in seawater cage culturing industry, which pertains to the technical field of agriculture mariculture. By utilizing different starvation time produced by compensation growth mechanism of spotted maigre with different weight, the invention puts forward different feeding methods for spotted maigre with different weight; the feeding methods include daily feeding amount, feeding frequency and stocking density which is suitable with the feeding frequency. The feed utilization rate of feed by adopting the method of the invention is improved by 13.7 percent; labor cost and feed cost of the cultivation is reduced, the fat content of the cultured spotted maigre is 5 percent to 10 percent lower than that of conventional cultivation, while the protein content is increased by 10 percent to 15 percent, which is conducive to human health, and the output value is increased by 28.3 percent; the cultivation method of the invention has good economic benefit, is an innovative seawater cage culturing method and can be applied for popularization.

The invention discloses a method for feeding sows dynamically according to nutritional levels. The method comprises the following steps: A, selecting raw materials and preparing a daily ration A with the nutritional level at the corresponding stage; B, preparing a daily ration B with reduced nutrient level in crude protein, crude fat and salt, wherein the daily ration B comprises corns, bean pulp, wheat, wheat bran, corn DDGS, calcium hydrophosphate, mountain flour, lysine 98, soya-bean oil, baking soda and salt; C, feeding the daily ration A in the morning from 7am to 12pm, and feeding the daily ration B at the afternoon from 12pm to 21pm; and D, feeding twice every day and half for the morning and the afternoon respectively, and adjusting appropriately according to the previous feed intake. The method is feasible and is simple and convenient to operate, the feed intake of sows and the utilization rate of the feed are effectively improved, dynamic feeding for sows can be carried out conveniently, the quality of milk of sows is enhanced, the reproductive performance is improved, the feeding cost is lowered, and ammonia gas and other harmful gas in pigpen air is reduced.

The invention relates to the technical field of feed processing and specifically provides a microbial fermented feed and a production process thereof. The microbial fermented feed is composed of 60% by mass of waste stevia rebaudiana residue, 15% by mass of corn flour, 15% by mass of soybean meal and 10% by mass of liquid strains, wherein the liquid strains comprise lactobacillus fermenti, saccharomyces cerevisiae, bacillus subtilis and clostridium butyricum. According to the invention, a plurality of microbes are utilized and scientifically collocated for fermentation of processing waste of stevia rebaudiana, and the microbial fermented feed with the advantages of low cost, a high nutritional value, fragrant flavor and agreeable taste is produced.

In the steering apparatus and feed screw mechanism, by properly adjusting the screw-in distance of a pressing force adjusting screw 77, the arc-shaped contact surface 761 of a pressing member 76 can be pressed against the outer diameter portion 711 of a feed screw shaft 71 with a required pressing force due to the biasing force of a compression coil spring 78. As a result of this, a backlash between a feed nut 73 and feed screw shaft 71 can be removed. Therefore, the telescopic position adjustment and tilt position adjustment of a steering wheel 3 can be carried out smoothly, thereby being able to enhance the rigidity of the steering wheel 3 after execution of the position adjustment thereof.

The present invention discloses a fermentation plant leaf breeding pig feed, wherein raw materials of the feed comprise, by weight, 160-170 parts of corn, 20-30 parts of soybean meal, 10-20 parts of fermentation plant leaves, 5-8 parts of wheat bran, 8-12 parts of tea leaf residues, 5-10 parts of orange residues, 4-6 parts of slag , 4-6 parts of maifanite, 4-6 parts of a premix, 0.03-0.05 part of methionine, 04-0.5 part of lysine, 0.2-0.3 part of gravy salt, 0.2-0.3 part of allitricin, 0.05-0.15 part of multivitamin, 0.01-0.015 part of phytase, and 3-4 parts of Chinese herbs. According to the present invention, the fermentation plant leaves, the maifanite, the tea leaf residues, the orange residues, the slag and other raw materials are added to the formula, such that palatability and nutrition of the feed and feed intake of the breeding pig can be enhanced, a growth state of the breeding pig can be improved, growth requirements of the breeding pig can be met, pig meat quality can be improved, and good effects are provided for digestion promotion, feed utilization rate improvement, weight increase per day of chicken, economic benefits and the like.

The invention discloses a method for preparing complete feed for cattle and sheep by using mushroom medium residues as a raw material for secondary fermentation. The complete feed is prepared from the following raw materials in parts by weight: 20-35 parts of mushroom medium residues, 25-40 parts of a plant material, 8-10 parts of corn flour, 5-8 parts of rice bran, 3-5 parts of bean pulp, 3-4 parts of sweet potatoes, 2-3 parts of honey, 0.1-1 part of a fermentation strain and 0.1-0.3 part of trace elements, wherein the plant material is one or mixture of more than one of sugar cane tops, corn stalks, fresh pasture, wheat-straws, rice straws, paper mulberry, peanut vines and weeds. The mushroom medium residues are fermented to prepare feed for cattle and sheep with simple preparation method and low cost; and the feed prepared after fermentation has comprehensive nutrition and sweet taste, can be used for improving the appetite of cattle and sheep, and can be well accepted by cattle and sheep, so that cattle and sheep grow fast.

The invention discloses a milk powder for calf, which comprises the following constituents (by weigh percent): whey powder 14-21%, whole milk powder 4-23.12%, puffed soybean 49-64%, concentrated soybean protein 1-3%, microelement premix 0.2-0.45%, vitamin premix 0.1-0.4%, calcium hydrogen phosphate 0.12-1.12%, table salt 0.03-0.06%, paunch accelerating agent 0.1-0.3%, intestinal tract protective agent 0.07-0.2%, neomycin 0.02-0.07%, terramicin 0.02-0.08%, anti-oxidizing agent 0.02-0.4%, lypressin 0.02-0.4%, hepionin 1-1.7%, tryptophan 0.5-0.75%, threonine 0.2-0.6%, stone powder 0.8-2% and fat 0.9-3%.

The invention discloses an animal feed additive and a preparation method thereof. The animal feed additive is prepared from the following raw materials in parts by weight: 5-10 parts of corn fiber, 15-20 parts of soybean curb residue, 12-15 parts of zeolite powder, 40-60 parts of corn sugar residue, 1 part of compound biological active enzyme, 1 part of saccharomycetes, 1 part of lactobacillus, 1 part of bacillus and 1 part of bifidobacterium, wherein the compound biological active enzyme comprises the following components: 20,000 IU / g of xylanase, 10,000 IU / g of pectinase, 400 IU / g of cellulose and 200 IU / g of protease. The preparation method comprises the steps of raw material weighing, pre-processing, mixing, dual fermentation and packaging. The animal feed additive disclosed by the invention can be used for improving the digestibility to promote the growth and development of animals, regulating the gastrointestinal micro-ecological balance to enhance animal immunity and improve disease resistance, improving animal feed intake, improving the cultivation environment to reduce respiratory diseases, and improving the quality and quantity of cultivated products.

Feed for herd boars comprises the following ingredients in percentage by weight: 62 of corns, 20 of 46% soya bean meal, 10 of wheat bran, 2 of beer yeast powder, 2 of Peruvian steamed fishmeal, 1 of calcium hydrophosphate, 0.7 of mountain meal, 0.32 of salt, 1.2 of core materials special for herd boars, 0.2 of baking soda, 0.12 of choline, 0.01 of ethoxy quinoline, 0.40 of smectite and 0.05 of propionic acid type mildewproof agent. The feed has good palatability and low feeding cost, ensures the survival rates of the semen of the herd boars to be higher than 99.8% and ensures good vigor and little dead and weak semen.

The invention discloses a fleshy duck fodder and a preparation method thereof. The fleshy duck fodder comprises the following components in parts by weight: 50 to 65 parts of corn, 12 to 25 parts of fine rice bran, 2.5 to 12 parts of cotton dregs, 2 to 12 parts of rapeseed meal, 1 to 6 parts of corn alcohol dregs, 0.5 to 2 parts of corn oil, 0.5 to 2 parts ns of rock powder, 0.2 to 1.5 parts of calcium phosphate secondary, 0.1 to 0.6 part of common salt, 0.2 to 0.8 part of lysine with the consistence of 65%, 0.05 to 0.25 part of methionine, 0.04 to 0.2 part of threonine, 0.01 to 0.1 part of tryptophan, 0.05 to 0.2 part of miscellaneous meal enzyme and 0.5 to 2 parts of premix compound. In the fodder, bean dregs are replaced by the cotton dregs and rapeseed meal, single amino acid and miscellaneous meal enzyme are added, the feed costs of fleshy ducks are greatly reduced, the feed effect to the fleshy ducks is better than the fodder with the bean dregs, the production performance of the fleshy ducks can be obviously enhanced, and the invention has the advantages of wide resources of raw materials, low production cost, high feed efficiency, and the like.

The invention provides a low fish meal compound feed capable of improving ingestion rate of cultured weever. The compound feed consists of the following components in part by weight: 26 to 31 parts of fish meal, 2 to 10 parts of whole shrimp powder, 12 to 16 parts of soy protein concentrate, 8 to 12 parts of fermented bean pulp, 9 to 12 parts of peanut cake, 20 to 23.5 parts of strong flour, 0.8 to 1.2 parts of calcium dihydrogen phosphate, 1.5 to 2 parts of fish oil, 1 to 2 parts of bean oil, 2 parts of vitamin and mineral salt premix, 0.2 to 0.4 part of betaine, 0.3 to 0.5 part of taurine, 0.05 to 0.1 part of citric acid, 0.3 to 0.5 part of Chinese asafetida, 0.1 to 0.2 part of glycine, 0.5 to 1 part of glutamic acid, and 0.05 to 0.12 part of alanine. The low fish meal compound feed canpromote ingestion and food digestion of fish, so that the utilization rate of the feed is improved, the coefficient of the feed is reduced, and the raising cost is reduced.

Provided are a steering device and a feed screw mechanism. The steering device is made so easy in the adjusting work of a backlash that it can eliminate the backlash reliably, even if the precision of the thread of a feed thread shaft or a feed nut is poor, thereby to improve the rigidity and to reduce the manufacturing cost of the feed screw mechanism. An upper-side end portion feed nut is urged upward of FIG. 8 by an upper-side disc spring so that an upper-side flank face of the thread ridge of the upper-side end portion fee nut is brought into close contact with the lower-side flank face of the thread ridge of a feed screw shaft. On the other hand, a lower-side end portion feed nut is urged downward of FIG. 8 by a lower-side disc spring so that a lower-side flank face of the thread ridge of the lower-side end portion fee nut is brought into close contact with the upper-side flank face of the thread ridge of the feed screw shaft. As a result, a feed nut and the feed screw shaft are cleared of the backlashes in the two upward and downward directions of FIG. 8.

The invention discloses feed for meat-type breeding ducks in egg-laying period, which comprises the following components in part by weight: 30 to 50 parts of corn, 5 to 15 parts of fine rice bran, 5 to 15 parts of wheat, 15 to 25 parts of bean pulp, 2 to 3 parts of fish meal, 1 to 5 parts of corn alcohol lees, 2 to 4 parts of corn albumen powder, 7 to 9 parts of mountain flour, 0.5 to 1.5 parts of calcium hydrophosphate, 0.2 to 0.5 part of table salt, 0.2 to 0.8 part of 65 percent lysine, 0.05 to 0.20 part of methionine, 0.05 to 0.15 part of complex enzyme, 0.02 to 0.05 part of microecological preparation, 0.01 to 0.02 part of phytase and 0.2 to 0.5 part of premix. In the feed, raw material resources are utilized fully, and the egg-laying rate, egg weight and productivity of the breeding ducks can be improved by mixing barley, the wheat and the fine rice bran which serve as main raw materials with vegetable protein, amino acid, microecological products, calcium and various mineral substances and vitamins in appropriate proportion. The feed has low cost, due to the addition of the monomer amino acid and the complex enzyme, the feeding cost of the breeding ducks is reduced substantially.

The invention discloses a feed capable of improving the milk yield of milk cow at the peak of lactation. The feed comprises the following nutritional substances in each kilogram of dry substances by weight: 150 to 180g of crude protein, 160 to 200g of crude fibers, 300 to 400g of neutral detergent fibers, 210 to 212g of acid detergent fibers, 5 to 10g of calcium, 4 to 6g of available phosphorus, 60 to 80g of by-pass protein, and 45 to 75g of by-pass fat, wherein the weight ratio of the by-pass protein to the by-pass fat is (0.9-1.5):1; and the net energy for lactating cow in each kilogram of the dry substances is 1.5-1.7kcal. When the feed is used for feeding the milk cow at the peak of lactation, the requirement of the special digestion system of the milk cow on nutrition can be met, theproduction performance, milk quality and feed conversion efficiency can be improved, and side effects, such as medicinal residues, environmental pollution and the like, are prevented.