36results about How to "Does not affect growth performance" patented technology

The invention relates to pig concentrated feed which does not contain antibiotic and hormone. The pig concentrated feed is mainly prepared from the following materials: protein materials, calcium hydrogen phosphate, calcium carbonate, iodinated salt, amino acid, zinc sulfate, sodium selenite, magnesium sulfate and the like. As the pig concentrated feed does not contain the materials such as the antibiotic, the hormone and the like and is added with a proper amount of microelements, the pig concentrated feed can supplement nutrient components of conventional feed, prevent feed quality degradation, improve palatability of the feed, improve the feed utilization rate for pigs, improve disease resistance of the pigs, prompt normal development and quick growth of the pigs, and improve the growth quality of the pigs; and after the pig concentrated feed which serves as an additive is prepared into complete feed, residue of mineral elements in pork and livers of the pigs (the component content is controlled to be within the safety value during the fattening period) is reduced, edible safety of pork products is ensured, the feed cost is lowered, and the environmental pollution of swine waste is reduced on the premise of not influencing growth performance of the pigs.

The invention discloses South America white shrimp feed, particularly relates to environment-friendly fish-meal-free South America white shrimp feed, and belongs to the field of aquatic feed. The feed is prepared from chicken powder, pig lung powder, fermented soybean meal, peanut meal, fish-soluble pulp powder, prawn powder, inkfish paste, high-protein flour, fish oil, granulesten, choline chloride, monocalcium phosphate, decavitamin premix, composite mineral salt premix, vitamin C-phosphate, Spanish bayonet extract, vine tea flavone, tributyrin and a Chinese herbal medicine compound preparation. The Chinese herbal medicine compound preparation is prepared in the mode that the bark of eucommia and lycium barbarum are mixed and subjected to superfine grinding and pass through a 100-mesh screen. The feed has the advantages that the feed formula is low in cost, nutrition is balanced, inducing performance is good, palatability is good, the disease resistance, stress resistance and strain resistance of shrimps can be enhanced, the survival rate can be increased, the quality of culture water can be improved, the meat quality and color of the South America white shrimps can be improved, and the green, safe and delicious shrimp products are produced.

This invention discloses a feed-use living bacterium acidic preparation and its special strain. The active component of the feed-use living bacterium acidic preparation is Bacillus subtilis subsp. Subtilis Gendone-01 (CGMCC No.1946). The feed-use living bacterium acidic preparation can be used for livestock as a substitute for antibiotics. And the livestock product does not have residual antibiotics, which is good for human health. Besides, the feed-use living bacterium acidic preparation can increase feed utility, reduce feed cost, sterilize in intestines, reduce diarrhea, and improve anti-stress ability and immunity.

The invention belongs to the field of biological feed, and specifically relates to a processing method and application of fermented feed for aquatic products based on hermetia illucens. The method comprises the following steps: activating a strain to obtain a bacillus fermentation seed solution, a saccharomycetes fermentation seed solution and a lactic acid bacteria fermentation seed solution; mincing and homogenizing fresh hermetia illucens larvae, and then mixing with bran, rice bran and wheat middling, adding acid protease, conducting mixing to obtain a fermentation culture medium, inoculating the bacillus fermentation seed solution, the saccharomycetes fermentation seed solution and the lactic acid bacteria fermentation seed solution, conducting anaerobic fermentation under the closed condition, and then obtaining a finished product. According to the present invention, fresh hermetia illucens are adopted for bacterium-enzyme synergistic fermentation, fermentation is thorough, and the finished product is high in small peptide content and rich in organic acid and has antibacterial activity; and meanwhile, the storage time is long, use is convenient, and good economic benefits are achieved.

The invention provides an environmentally protective raw fish puffed feed with low emissions of nitrogen and phosphorus. The puffed feed comprises fish meal, defatted soybean meal, corn protein powder, wheat gluten powder, spray dried blood meal, squid small peptides, fish oil, soybean oil, phosphatide oil, choline chloride, flour, tapioca flour, L-lysine hydrochloride, DL-methionine, threonine, tyrosine, taurine, mannan oligosaccharide, vitamin C, trace element premix, vitamin premix, an antioxidant. The prepared raw fish feed can significantly reduce nitrogen and phosphorus emissions, has a strong stability in water, is low in dissolve-loss ratio, and has a high-quality environmentally protective effect.

The invention provides a feed for improving chicken quality. The feed is prepared by adding 0.5 to 1.5 percent of green tea powder into basic ration. The invention further provides a feeding method for improving the chicken quality of Liangfeng chickens, namely, the Liangfeng chickens are fed by the feed. According to the feed and the feeding method provided by the invention, the fresh and tender degree of the chicken quality of the Liangfeng chickens can be effectively improved without influencing the growth performance of the chickens; the conversion rate of the feed can also be improved to a certain degree; the feeding cost can be reduced.

The invention relates to application of Clostridium autoethanogenum protein in freshwater carnivorous fish feeds, and belongs to the field of feeds. As for the application of the Clostridium autoethanogenum protein in the freshwater carnivorous fish feeds provided by the invention, a preparation method of the Clostridium autoethanogenum protein comprises the following steps: taking Clostridium autoethanogenum as a fermentative bacterium as well as gas containing CO as a raw material so as to carry out liquid-state fermenting-culturing to obtain fermentation broth; and then, centrifuging thallus in the fermentation broth, and carrying out primary drying so as to obtain the Clostridium autoethanogenum protein. The application of the Clostridium autoethanogenum protein in the freshwater carnivorous fish feeds provided by the embodiments of the invention has the following advantages: 1, being used as an alternative for fish meal, the Clostridium autoethanogenum protein is free of adverse effects on fish body, so that the Clostridium autoethanogenum protein can be used as one of high-quality protein source substitutes for the fish meal; and 2, compared with low-temperature dried fish meal, which is good in quality as well as good in digestion and absorption rates yet relatively high in price, the Clostridium autoethanogenum protein is capable of reducing cost by 5.58-16.73% on the basis of acting as a good substitution for the fish meal. Therefore, obvious economic benefits are ensured.

The invention discloses a microbial ecological agent for preventing and treating piglet diarrhea and a preparation method of the microbial ecological agent. The microbial ecological agent is prepared from pig manure, is used for preventing and treating piglet diarrhea, and has obvious effects, and thus the use amount of an antibiotic for the pig is reduced in the prevention and treatment of the piglet diarrhea. The preparation method comprises the following steps: firstly collecting the manure of the healthy fragrant pig from the Congjiang County of Guizhou Province, adding the manure into stroke-physiological saline solution to prepare a suspension, filtering the suspension with a stainless steel tea hopper and a cell sieve (the hole diameter is 0.224mm) sequentially, thus obtaining the manure bacterial liquid of the pig, adding a strain protection agent to the manure bacterial liquid of the pig, and uniformly mixing, and thus obtaining the microbial ecological agent, wherein 10<3>-10<10> viable organisms exist in each milliliter of the microbial ecological agent. During use, the microbial ecological agent is drenched to the stomach of the piglet, wherein the drenching dosage is 1-10 ml each time, once per day. The preparation process of the microbial ecological agent is simple, the production cost is relatively low, the microbial ecological agent has the significant effect for preventing and treating piglet diarrhea, and the growth performance of the piglet is not influenced.

The invention relates to the science field of animal feed and particularly relates to piglet feed and application thereof. The piglet feed is prepared from corn, peeled and puffed soybean meal, wheat, whey powder, beer yeast, calcium hydrogen phosphate, soybean flour, soybean oil and a piglet premix. Research of the invention finds that the growth performance of piglets, which are fed by the piglet feed, is not influenced, and the feed conversion ratio also can be lowered, so that the weight increment cost of the piglets is reduced and economic benefits of enterprises are improved. The research indicates that the peeled and puffed soybean meal can be used for replacing or partially replacing fish meal to supplement protein in the feed, so that the feed cost can be remarkably reduced and an application range of the soybean meal in piglet daily ration is expanded.

The invention relates to a special feed for cyprinus carpio under alkaline water area culture conditions and a preparation method thereof and belongs to the technical field of cyprinus carpio feeds and preparation thereof. The feed is prepared from soybean meal, fish meal, middlings, bean oil, fish oil, phospholipid, choline chloride, sodium dihydrogen phosphate, mineral element premix, multivitamins, methionine, threonine, sodium butyrate, alpha-ketoglutaric acid and N-carbamylglutamic acid according to certain parts by mass. Through adding the sodium butyrate, the acid-base equilibrium of intestinal tracts can be changed, the activity of digestive enzymes is improved, the growth of probiotics is promoted to improve intestinal tract health, and growth is promoted. The alpha-ketoglutaric acid and the N-carbamylglutamic acid can convert ammonia resulting from catabolism of proteins into glutamine and arginine in a metabolism process, and nitrogen generated from metabolism is transferredinto amino acids again for reutilization, so that a toxic action on fish bodies caused by the ammonia and the nitrogen is reduced, and the utilization ratio of the nitrogen is increased; meanwhile, the generated glutamine and arginine can also be used for improving immunizing and oxidation resisting functions of organisms.

The invention discloses application of nobiletin in preparing a feed additive for improving pork quality. The inventor of the invention finds that the nobiletin can obviously improve the crude protein content of pork, the marbling score, the inosinic acid content and the ratio of margaric acid to arachidic acid to linoleic acid to cis-11-eicosenoic acid and eicosadienoic acid unsaturated fatty acid to total fatty acids, namely can effectively improve the fork quality, without affecting growth performances of pigs, so that the nobiletin is suitable for preparing the feed additive for improving the pork quality.

The invention belongs to the field of veterinary herbal medicine, and relates to a veterinary herbal medicine preparation for treating piglet diarrhea and a preparation method thereof. The preparationof the invention is obtained by the processes of extracting and concentrating the medicines such as mahonia fortunei, Ilextrotunda thunb, cranesbill, acalypha australis and sophora flavescens. The veterinary herbal medicine preparation has the beneficial effects that the veterinary herbal medicine preparation can effective treat diarrhea of piglets, has the characteristics of quick effect, no side effects, no drug resistance, and strong stability, and is suitable for mass production and large scale.

The invention relates to the technical field of special feed for young animals, in particular to low-protein balance amino acid piglet compound feed which comprises, by weight, 70-74 parts of corns, 16-18 parts of bean pulp, 4-5 parts of bran, 0.8-1.5 parts of fish meal, 1-3 parts of compound additives and 0.45-0.60 part of lysine. According to the feed, the usage amount of the bean pulp is less, feed cost is reduced, crude protein content is reduced by 2%, intestinal health of piglets can be facilitated, heat stress can be resisted under tropical conditions of Guangdong and the like, and nitrogen emission is decreased. Researches show that when dietary protein level is reduced by 1%, the nitrogen emission is reduced by 7%, various primary indicators such as metabolic energy and amino acid cannot be changed, production performance cannot be affected, and a metabolic energy system and various nutritive indexes are accurately adjusted, so that the compound feed is more accurate in nutrition.

The invention discloses a grass carp set meal feeding method according to the law of natural variation of dissolved oxygen in a water body. The daily grass carp set meal feeding mode is determined according to the daily dissolved oxygen level in a pond water body, in a low dissolved oxygen period, feed with a low nutrient level is fed, and in a high dissolved oxygen period, feed with a high nutrient level is fed. The set meal mode of grass carp in a growing period is put forward according to the whole-day natural dissolved oxygen variation law in the pond, thereby accurately meeting the physiological needs of the grass carp in different physiological states. The set meal mode is reasonably designed, and the distribution of the feeding amount per meal is also based on a large number of research and statistics results. A breeder can directly observe the feeding status of the fish, the feeding amount can be timely adjusted, the fed feed is basically eaten by the fish, the residual bait isless, water pollution caused by excessive feed input can be avoided, and the freshness of the breeding water environment is ensured. The grass carp feed utilization efficiency can be improved, the grass carp feed coefficient is reduced, the breeding cost is reduced, and the comprehensive benefits of breeding are improved.

The invention discloses a method for reducing copper accumulation in fattening pigs and the copper content in pig manure. The method includes the following steps of firstly, preparing a copper reducing premix; secondly, preparing copper reducing feed; thirdly, feeding the pigs. The method has the advantages that the copper excretion of the pig manure can be remarkably reduced by feeding the growing and fattening pigs with the copper reducing feed two weeks before slaughtering, and the pollution to the environment is reduced; by feeding the pigs with the copper reducing feed, the deposit rate of blood copper, serum copper, liver copper and longissimus dorsi copper in pig bodies can be reduced, the accumulation of the copper element in animal bodies is reduced, and the animal food safety isimproved; by adding low-dosage (25 ppm) inorganic copper or semi-amount organic copper to the feed for the growing and fattening pigs, the growth requirements of growing pigs can be met, and great practical significance in environment protection is achieved; the sales price of organic copper on the market is higher than that of inorganic copper, many farmers cannot accept the price, the growth requirements of the growing pigs can be met by adding 25 ppm of copper sulfate to the daily feed of the growing pigs, and meanwhile the manure copper discharge amount is greatly reduced.

The invention belongs to the field of animal feed and particularly relates to sheep feed based on bamboo shoot shells. The sheep feed based on the bamboo shoot shells contains the ensiled bamboo shoot shells. The use amount of the ensiled bamboo shoot shells accounts for 30-70% of the weight of coarse fodder in daily ration or accounts for 23-47% of the weight of the daily ration. According to the sheep feed based on the bamboo shoot shells, the ensiled bamboo shoot shells can be used for replacing leymus chinensis to serve as the feed of hu sheep, and the growth performance of the hu sheep will not be influenced. The ensiled bamboo shoot shells can be used for replacing the leymus chinensis to serve as cattle feed, and the growth performance of cattle will not be influenced. When the ensiled bamboo shoot shell feed is used, 4% of molasses is added, and the feed intake and the daily weight gain can be increased; the feed conversion efficiency is improved, the feed to weight ratio is lowered, and the effect is superior to the effect achieved when the ensiled bamboo shoot shells or the molasses are used independently.

The invention relates to a fattening sheep compound feed for reducing fat deposition. The fattening sheep compound feed comprises the following components in parts by weight: 0.05-0.5 part of a compound additive obtained by mixing betaine, chitosan oligosaccharide and L-carnitine, 25-35 parts of corn, 1-3 parts of bran, 3-7 parts of soybean meal, 5-10 parts of oil residue, 10-15 parts of silage, 3-7 parts of corn germ meal, 30-40 parts of Chinese wild rye, 0.1-1 part of table salt, 0.5-1.5 parts of stone powder, 0.1-1 part of calcium hydrogen phosphate and 0.5-1.5 parts of a mixture of vitamins and trace elements. The compound feed provided by the invention can increase the final weight, average daily gain, average daily feed intake and feed conversion rate of the fattening sheep while remarkably reducing the absolute weight of the fattening sheep tail and rumen fat and the total fat, the proportion of the fattening sheep tail and rumen fat and the total fat to the live weight before slaughtering and the proportion of the perirenal fat to the live weight before slaughtering in comparison with a control group; thus, the compound feed provided by the invention can noticeably reduce the fat content without influencing the growing performance and slaughtering performance of mutton sheep; and moreover, the compound feed is safe to use and has a great promotion value.

The invention discloses a reserve cow feed with low-phosphorous emission. The reserve cow feed comprises the following components in parts by weight: 25-26 parts of silo corn, 39-40 parts of chinese wildrye, 13.5-14.5 parts of corn, 6.0-6.5 parts of barley, 1.5-2 parts of bean meal, 4.5-5 parts of rapeseed dreg meal, 4.5-5 parts of DDGS, 0.5-1 part of phaseolin polypeptide and 2.3-2.8 parts of a non-phosphorus premix. The non-phosphorus premix per kilogram contains vitamin A, vitamin D, vitamin E, zinc, selenium, iodine, cobalt, manganese, copper, nicotinamide, and the balance being zeolite powder. At the premise of not affecting the growth performance of reserve cow, the feed can be used for reducing the concentration of dietary phosphorus, and reducing the emission of excrement and urea phosphorous, so that the pollution of a phosphorus element to the environment is reduced.

A Paralichthys olivaceus juvenile feed comprises 45-55% of fish meal, 15-20% of bean meal, 3-8% of alpha-starch, 1-4% of shrimp peel meal, 2-5% of brewers' yeast, 2-5% of corn protein powder, 2-5% of soybean phospholipids, 0.5-1.5% of squid internal organ powder, 0.5-1.5% of blood powder, 10-15% of wheat flour, 0.1-0.2% of betaine, 0.1-0.3% of choline chloride, 1-1.5% of fish oil, 0.1-0.3% of multiple vitamins and 1-3% of minerals. The Paralichthys olivaceus juvenile feed prepared in the invention adopts botanical white bean meal to substitute parts of animal proteins, so the cost of the feed is reduced; and the proportion of the bean meal is controlled to be 15-20%, so balanced nutrition of the feed is guaranteed, and the growth performance of Paralichthys olivaceus juveniles is not influenced.

The invention discloses a biologic concentrated feed for pigs. In a formula of the biologic concentrated feed, a trace element premix, peptide type protein raw materials and functional fat, in an appropriate compounding ratio, are used. The pretreated peptide type protein raw materials are selected for use, and anti-nutritional factors in a traditional protein source are eliminated, so that digestion and absorption of the feed and the production performance of the pigs can be increased, and the feed conversion rate can be reduced; the formula is designed through digestible amino acids, the level of crude proteins is low, and the digestibility of the peptide type protein raw materials is high, so that the growth performance of the pigs is not influenced, and waste of protein resources and environment pollution are reduced; and homogenized and emulsified functional fat is selected for use, so that absorption and utilization of fat by the pigs can be increased. When the biologic concentrated feed is used for suckling piglets, immunity and stress resistance of the suckling piglets can also be reinforced; when the biologic concentrated feed is used for sows, the lactation amount and thequality of dairy products can be increased, and the survival rate, the new-born weight, the daily gain and the weaned brood weight of the suckling piglets can be increased; and therefore, the biologic concentrated feed is an efficient biologic concentrated feed for the pigs, and is good in application prospects.

The invention belongs to a production method for adding brewer grain fattening pannage, which belongs to the technical field of the feed processing. The production method comprises the following steps that: the brewer grain is undertaken the steam explosion pretreatment and is added with mixed bacteria and / or complex enzyme to be undertaken the solid anaerobic fermentation so as to degrade the fiber content in the brewer grain and to improve the soluble nitrogen content of the brewer grain, so the quality is better, and the nutrition is more balanced; then the fermented brewer grain, waste yeast powder, corn meal, soybean meal and pre-mixed material are uniformly mixed to obtain the fattening pannage being added with brewer grain. The source of the brewer grain and the waste yeast is abundant, the nutrition for matching the brewer grain and the waste yeast is balanced, and the cost of the feed can be reduced; and the brewer grain is processed with the steam explosion pre-treatment technology, the enzymolysis technology and the biological fermentation technology, so the fiber content is reduced, the protein quality is improved, and the type of the aminoacid is more abundant; and the production method can reduce the grain ratio, improves the daily gain, reduces the feed compositions, and is free from influencing the feed intake and the growth of the fatty pigs.

The invention discloses a reserve cow feed with low-phosphorous emission. The reserve cow feed comprises the following components in parts by weight: 25-26 parts of silo corn, 39-40 parts of chinese wildrye, 13.5-14.5 parts of corn, 6.0-6.5 parts of barley, 1.5-2 parts of bean meal, 4.5-5 parts of rapeseed dreg meal, 4.5-5 parts of DDGS, 0.5-1 part of phaseolin polypeptide and 2.3-2.8 parts of a non-phosphorus premix. The non-phosphorus premix per kilogram contains vitamin A, vitamin D, vitamin E, zinc, selenium, iodine, cobalt, manganese, copper, nicotinamide, and the balance being zeolite powder. At the premise of not affecting the growth performance of reserve cow, the feed can be used for reducing the concentration of dietary phosphorus, and reducing the emission of excrement and urea phosphorous, so that the pollution of a phosphorus element to the environment is reduced.

The invention discloses a tapioca-chip-containing meat duck mixed feed which comprises the following raw materials: corn, wheat, corn vinasse, peanut pulp, cotton pulp, plasma protein powder, bean concentrated protein, palm kernel meal, tapioca chip, edible salt, Lishubao, mountain flour, calcium hydrophosphate, 60 percent of choline chloride, methionine, threonine, lysine, liquid complex phosphoesterasum, liquid phytase, allicin, sodium bicarbonate, vitamin premix, trace element premix and a traditional Chinese medicine additive. The tapioca-chip-containing meat duck mixed feed has the beneficial effects that the relatively cheap tapioca chip in the meat duck feed replaces partial corn; scientific mixing is realized; on the premise that the overall growth property of meat duck is not influenced, the cost of the feed formula of a feed factory and a cultivation enterprise is reduced; feed resources are saved; and a good social value is created.

The invention particularly relates to application of clostridium autoethanogenum protein in crustacean feed, and belongs to the field of feed, and the application is as follows: the clostridium autoethanogenum protein is used as a protein source for producing the crustacean feed, and the crustacean feed comprises Chinese prawn feed and river crab feed. According to the crustacean feed prepared by taking the clostridium autoethanogenum protein as the protein source provided by the embodiment of the invention, the dosage of animal / vegetable protein raw materials in the feed can be reduced without influencing the growth performance of crustaceans. Protein raw materials serve as essential nutrient sources of crustaceans, and the protein content, palatability and digestibility of the protein raw materials become important indexes for measuring the quality of the raw materials; the dosage of fish meal / vegetable protein in the formula can be reduced without influencing the growth performance; the stability of the feed in water is improved, and the dissolution rate of the feed is reduced; and the feed cost is reduced and the breeding income is increased.

The present invention belongs to the field of animal feed, particularly to a cattle feed based on bamboo shell. The cattle feed based on bamboo shell comprises the following components in percentage by mass: 26-28% of leymus chinensis, 25-27% of corn, 5-7% of soybean meal, 2.5-3.5% of wheat bran, 4.5-5.5% of rapeseed meal, 0.4-0.6% of salt, 0.4-0.6% of calcium hydrogen phosphate and 30-35% of bamboo shell silage. The total mass percentage of the components is 100%. In the formulation, the leymus chinensis is adopted to increase ingestation amount. If fresh grass is used alone, the growth of animals will be affected. The feed effectively utilizes the waste bamboo shell widely existed. Feeding cattle with the feed is conducive to the synthesis of sugars and carbohydrates, increases the microbial protein concentration in rumen, and increases the utilization rate of protein.

The invention relates to pig concentrated feed which does not contain antibiotic and hormone. The pig concentrated feed is mainly prepared from the following materials: protein materials, calcium hydrogen phosphate, calcium carbonate, iodinated salt, amino acid, zinc sulfate, sodium selenite, magnesium sulfate and the like. As the pig concentrated feed does not contain the materials such as the antibiotic, the hormone and the like and is added with a proper amount of microelements, the pig concentrated feed can supplement nutrient components of conventional feed, prevent feed quality degradation, improve palatability of the feed, improve the feed utilization rate for pigs, improve disease resistance of the pigs, prompt normal development and quick growth of the pigs, and improve the growth quality of the pigs; and after the pig concentrated feed which serves as an additive is prepared into complete feed, residue of mineral elements in pork and livers of the pigs (the component contentis controlled to be within the safety value during the fattening period) is reduced, edible safety of pork products is ensured, the feed cost is lowered, and the environmental pollution of swine waste is reduced on the premise of not influencing growth performance of the pigs.

The invention relates to the technical field of biology, and specifically relates to a probiotic clone strain for integrating four copy functional F18 fimbria operon genes, a construction method and application. The construction method comprises the following steps: constructing a pTargetT-X::PtetF18 recombinant plasmid; and constructing the probiotic clone strain for integrating four copy functional F18 fimbria operon genes to obtain a nonresistant four copy F18 fimbria gene integrated clone strain, and expressing and showing the clone strain on the surface of a cell. Compared with the priorart, the probiotic clone strain disclosed by the invention has the beneficial effects: original plasmid of Nissle 1917 probiotics is removed, and resistance genes are avoided; recombinant bacteria caneffectively improve adhesion property to a porcine intestinal tract passage epithelial cell (IPEC-1); by means of oral immunization, immune serum, namely anti-F18 fimbria IgG antibody, can be generated in a mouse; and after oral immunization, mouse serum can obviously reduce adhesion of a F18<+> bacterial strain to IPEC-J2, a porcine intestinal tract passage cell line.

The invention discloses a fermentation method and application of mulberry pomace, and belongs to the technical field of agriculture. The method comprises the following steps: step 1, screening strainsfor fermentation, wherein the strains mainly include bacterium lacticum, bacillus, saccharomycetes and bifidobacterium in a ratio of 3:1:1:1, so that the fermented feed is easier to digest and absorb; step 2, screening and adjusting a fermentation substrate, wherein the mass ratio of mulberry pomace to bran and corn flour is 9:1:1; step 3, performing fermentation for 4-5 days; and step 4, addingthe mulberry pomace fermented in the step 4 into a pig feed. Experiments prove that when the fermented pomace is added into the feed in a fattening period, the meat quality is improved and the marbling score is remarkably improved without influencing growth performance of fattening pigs.

The invention relates to a grain-saving growing-finishing pig feed and a preparation method thereof. The feed comprises the following components in parts by weight: 30-50 parts of sugarcane stalks, 20-40 parts of corn stalks, 10-20 parts of rice bran, 10-20 parts of fish meal, 10-15 parts of bran, 5-10 parts of sweet potato leaves, 5-10 parts of soybeans, 3-6 parts of red date residues, 5-10 parts of haws, 3-5 parts of alcohol, 3-6 parts of table salt, 10-20 parts of traditional Chinese medicine powder, 3-5 parts of a vitamin mixture, 0.05-0.1 part of a probiotic mixture and 0.03-0.05 part of compound trace elements. According to the feed, only sugarcane straw, corn straw, mixed rice bran, bran, sweet potato leaves and other products are used for replacing corn and wheat, the supply and price pressure of corn and wheat can be relieved, and grain feed raw materials are saved; the compound feed is reasonable in nutrient component proportion, various compound additives such as the vitamin mixture, the probiotic mixture and the compound trace elements are used, and the problem that the feed utilization rate is low is solved by combining improvement of the processing technology; the feed can meet the nutritional requirements of growing-finishing pigs, does not affect the growth performance and meat quality of the pigs, can reduce the formula cost, and improves the comprehensive economic benefits.