1979 results about "Feed conversion ratio" patented technology

The present invention relates to codon-optimized xylanase coding sequences and the expression of xylanases in microbes and yeast. The invention further relates to using multiple copies of the xylanase expression construct for high levels of protein expression. The invention also relates to the use of xylanases as feed or food additives. The invention also relates to methods of expression of enzymes to increase thermotolerance by expressing them in organisms that glycosylate proteins compared to expression that the same enzyme without the glycosylation. Further, the invention relates to methods of preparing feed, enzyme feed additives, and methods of reducing the feed conversion ration or increasing weight gain of animals.

The invention discloses a special physiological regulator for maternal animals, and a preparation method thereof, and belongs to the field of feed additive. A technical scheme of the physiological regulator comprises: carrying out crushing and screening for dandelion, leonurus, licorice root and angelica; adding soybean meal and / or wheat bran; adding water to carry out immersing; adjusting pH value of the resulting mixture; carrying out a sterilization; inoculating probiotics to carry out a fermentation after cooling, followed by stoving after completing the fermentation to obtain the physiological regulator. With the prepared physiological regulator for the maternal animals, immunity and disease resistance of the maternal animals are raised, incidence rate of genital system infection is effectively reduced, feed inversion rate is increased, mammogenesis is improved, milk yield is raised, incidence rate of mammitis is reduced, and milk quality is improved. The physiological regulator has characteristics of quick onset, stable and reliable effect, no toxic and side-effect, no pollution, no residue, and no drug resistance generating, and meets requirements of safe feed additive and assurance of foods of animal origin. In addition, the physiological regulator for the maternal animals can be adopted as a veterinary drug through raising using dosage of the physiological regulator, and provides a substantial curative effect for prevention and cure of the mammitis.

The invention relates to a prebiotic peptide biological feed additive and a preparation method and application thereof. The prebiotic peptide biological feed additive is prepared by mixing and fermentation of seed solution with one or more of bacillus, yeast and lactic acid bacteria in plant protease hydrolysate. After animal and plant protein is subjected to enzymolysis at constant or changeable temperature, the seed solution with one or more of bacillus, yeast and lactic acid bacteria is added for fermentation according to a certain proportion, and the fermented solution is concentrated and dried to obtain a powdery product. The problems of high content of bitter peptides and poor palatability of enzymolysis processes using acid, alkali and protease can be solved. The immune function of animals can be stimulated by active peptides in the prebiotic peptide biological feed additive, the immunity of the animals can be improved, the intestinal environment of the animals can be improved by probiotics, the resistance of the animals to a variety of diseases can be enhanced, the feed conversion rate can be increased, and the breeding cost can be reduced.

The invention relates to a general-purpose composite Chinese herbal medicine immune enhancer for freshwater cultured fish, which is made of raw materials with the following weight ratios, based on the amount added per ton of feed: rhubarb 800-2000g; Sanqi 350-1000g; water Silybum 1200-2500g; Cassia 600-800g; Astragalus 600-2000g; Scutellaria baicalensis 500-900g; 500-1500g; Garlic 1000-2000g. After many tests in the laboratory, it has been proved that the general-purpose compound Chinese herbal medicine immune enhancer for freshwater aquaculture fish can improve the survival rate of a variety of freshwater aquaculture fish in the process of attacking viruses; The long-term breeding experiment of farmed fish feed proves that the general-purpose compound Chinese herbal medicine immune enhancer for freshwater farmed fish can effectively reduce the incidence of a variety of high-density farmed freshwater fish and improve the survival of the breed; the additive is safe, efficient, and has no side effects for long-term use. The breeding objects have strong vitality, rapid growth, bright body color, high feed conversion rate, and good breeding benefits.

An isolated Bacillus strain LSSAO1 is provided. When fed to a bird, this and other Bacillus strains described herein provide benefits to the birds. For example, administration of the one or more Bacillus strain can increase low G+C, gram positive bacteria in the gastrointestinal flora of the bird. These type of bacteria are increased by antibiotics and include beneficial Clostridium. Administration of the one or more Bacillus strain can also inhibit pathogen in the bird, such as E. coli, Salmonella, and Clostridium. These benefits can enhance feed conversion in poultry. Useful combinations of Bacillus strains and methods of using one or more Bacillus strain are also provided.

The invention discloses a slowly-released compound acidifier for poultry and livestock feed, a preparation method thereof and feed containing the same. The compound acidifier comprises the following compositions in part by weight: 30 to 80 parts of complex organic acid, 15 to 50 parts of supplementary materials and 5 to 20 parts of coating agents. The complex organic acid is citric acid, fumaric acid, malic acid, lactic acid, linoleic acid, crataegolic acid, ursolic acid, chlorogenic acid, glycyrrhizic acid and oleanolic acid, and the supplementary materials are silicon dioxide, hydroxypropyl methylcellulose and ethyl cellulose. The acidifier is scientifically proportioned, has strong efficiency and is long-acting and slow-releasing, nutrients in the feed are free from being damaged, the acidifier has good fluidity and is easy to be uniformly mixed with the feed, the digestive absorption of nutrients can be promoted, the conversion rate of the feed can be improved, the productivity of poultry and livestock can be improved, the time for domestic animals for sale can be effectively shortened, the health of gastrointestinal mucosa of the animals can be protected, the immunologic function of the animals can be strengthened, and diseases can be prevented.

The present invention relates to a novel feed composition for animals, for example poultry, comprising as active ingredient benzoic acid, derivatives or metabolites thereof, in combination with a mixture of at least two active compounds selected from the group consisting of thymol, eugenol and piperine. The inventors found that in addition to the well known function of benzoic acid, this compound can be used as a potential growth promoter when it is combined with a mixture of at least two active compounds selected from the group consisting of thymol, eugenol and piperine. In particular the inventors have been able to demonstrate that a mixture of these chemical compounds present in different parts of plants, used in synergy and in combination with an appropriate amount of benzoic acid, exhibits, in totally unexpected manner, the effects sought by the present invention of improving the digestibility of poultry feed, i.e. for improving feed conversion ratio and / or daily weight gain in animal.

A feed additive composition comprising a direct fed microbial in combination with a protease, and a phytase, and a method for improving the performance of a subject or for improving digestibility of a raw material in a feed (e.g. nutrient digestibility, such as amino acid digestibility), or for improving nitrogen retention, or for improving the subject's resistance to necrotic enteritis or for improving feed conversion ratio (FCR) or for improving weight gain in a subject or for improving feed efficiency in a subject or for modulating (e.g. improving) the immune response of the subject or for promoting the growth of beneficial bacteria in the gastrointestinal tract of a subject, which method comprising administering to a subject a direct fed microbial in combination with a protease and a phytase.

The invention belongs to the field of biological techniques and relates to a bacillus subtilis strain and a feed additive and a fermenting agent thereof. The bacillus subtilis has high stress resistance and probiotic effect, so the bacillus subtilis can tolerate artificial gastric juice with a pH value of 2.0 and a concentration of 1 percent, artificial cholate at a concentration of 0.3 percent and a granulating temperature of 80 DEG C; and the bacillus subtilis has a strong inhibiting effect on Escherichia coli K88, Escherichia coli K99 and staphylococcus aureus, high cellulase producing capacity and ability of degrading cellulose. The biological feed additive prepared by using the bacillus subtilis provided by the invention can be used in place of part of antibiotics in livestock and aquatic product culture, improve immunity in animal, improve feed conversion rate and lower culture cost. The bacillus subtilis also can be used in fermentation of bean pulp, cotton meal, vegetable mealand the like, prevent the feed from mildewing, promote the digestion of cellulose in feed and improve the utilization rate of nutrients in the feed.

The invention discloses a method for propagating market hogs. According to the different growth and physiological stages of the market hogs, the growth of the market hog comprises the stages of lactation and luring, weaning and stress, pigling breeding, growing development and beef gain, fodder with good nutrition, smell, and luring performance is provided in the stage of lactation and luring; fodder with diarrhea resistance and high nutrition concentration and capable of keeping the healthy of intestinal tract is provided in the stage of weaning and stress; fodder capable of strengthening immunity, promoting growth and exercising the intestinal tract is provided in the pigling breeding; fodder for increasing nutrition and protein synthesis is provided in the stage of growing development;the fodder with high energy and high amino acid is provided in the beef gain. According to the method, the fodder is schemed according to the physiology and development stage and the stress conditions; the method has the advantages of low mortality, quick growth speed, short propagation period, low feed conversion ratio, high weight and the like; in addition, the propagation cost of the market hog is lowered, and the economic benefits of propagating market hog are improved.

A preparation method of a microecological culture feed additive belongs to the technical field of livestock and poultry feed additive. A solid fermentation medium comprises 40% of wheat bran, 10% of corn, 9% of soybean meal, 0.5% of urea, 0.1% of potassium dihydrogen phosphate, 0.1% of sodium dihydrogen phosphate, 0.1% of manganese sulfate, 0.2% of calcium chloride and 40% of water. fermentation strains include plant lactobacillus, bacillus subtilis and saccharomyces cerevisiae in a ratio of 1:2:2. The method comprises the following steps: crushing, sieving, mixing, disinfecting, preparing fermentation bacteria liquid, inoculating fermentation strains and obtaining a finished product. The microecological culture feed additive provided by the invention combines functions of nutrition and health care, has no toxic or side-effect or pollution, and can improve antioxidation capability and immunization function of a weaning pigling, increase daily weight gain of the pigling and forage conversion rate, reduce diarrhoea rate, reduce or prevent pigling weaning stress syndrome and substitute antibiotic additive in forage.

The invention belongs to the field of feed additives, more particularly relates to a compound micro-ecological preparation. The compound micro-ecological preparation contains probiotic bacteria, probiotics, saccharicterpenin and carriers according to the weight proportion of 1:1-2:0.1-1:1-10. The compound micro-ecological preparation realizes the optimally-effective proportioning of the probiotic bacteria, the probiotics and the saccharicterpenin, and the proportioning is reasonable and can fully give the synergy of the probiotic bacteria, the probiotics and the saccharicterpenin; the compound micro-ecological preparation can be taken as a substitute product of antibiotics while being used as a feed additive, eliminates drug residues and improves the quality of products, such as meat, eggs, milk, and the like; and the compound micro-ecological preparation can be also used for preventing and curing various animal diarrheas, improving immunity and disease resistance and reducing the death ratio of animals, can improve the feed conversion ratio and the animal production performance (increase the output of meat, eggs and milk), has better effects to livestock and poultry in all growth stages and is convenient for purifying barn environment and protecting and improving the ecological environment.

The invention provides a high efficiency livestock and poultry nutrition replenisher and a preparation method thereof, and the nutrition replenisher contains various vitamins, amino acids and electrolyte. Simultaneously, the multi-stage premixing process is adopted by the high efficiency livestock and poultry nutrition replenisher, so that the high mixing uniformity of ultra-trace elements can beensured; and furthermore, sanguinarine is introduced into drinking water nutrition replenisher and is processed by peridium treatment, and emulsification treatment is carried out on liposoluble vitamins, so that good water-solubility can be guaranteed. The high efficiency livestock and poultry nutrition replenisher has comprehensive nutrition, leads all nutrient components to be supplemented witheach other, can effectively prevent deficiency of the vitamins and the amino acids, maintains electrolyte balance, regulates the metabolism of organism, improves the feed conversion rate and the anti-stress capability, stimulates the immune function, reduces the occurrence of diseases, and has remarkable economic and social benefits as well as broad market prospect.

The invention relates to a marine-fish environmental protective compound feed, consisting of the following materials in weight ratio: 13 to 20 portions of domestic fish powder, 8 to 15 portions of biological fish meal ABP600, 8 to 12 portions of soybean meal, 10 to 18 portions of peanut bran, 3 to 10 portions of corn, 3 to 7 portions of cotton seed meal, 3 to 7 portions of rapeseeds meal, 3 to 5 portions of meat and bone meal, 3 to 5 portionsof squid bowels powder, 20 to 30 portions of high gluten flour, 1.0 to 3.0 portions of blood meal, 1.0 to 2.0 portions of soybean lecithin, 2.0 to 3.0 portions of marine-fish oil, 0.3 to 0.6 portions of choline chloride (50%), 0.05 to 0.1 portions of Vitamin C phosphate (35%), 0.15 to 1.5 portions of calcium biphosphate, 0.2 to 0.5 portions of compound multiplex vitamin, 0.5 to 1.5 portions of compound mineral salt, 0.1 to 0.3 portions of feed attractant, 0.1 to 0.3 portions of micro-bio-preparation, 0.03 to 0.08 portions of A3Alpha peptidoglycan, 0.01 to 0.04 portions of phytase, and 0.04 to 0.08 portions of non-starch polysaccharase. The compound foodstuff can meet the nutrition demands of such high density cultivated marine fishes such as weever, large yellow croaker, American red fish, sparidae fishes, and trachinotus ovatus and rudd etc, and the cultivated objects can rapidly grow and has high foodstuff conversion rate; the compound foodstuff can intensify the immunity and anti-stress ability of fishes and endow them with good vitality, vivid body color and high survival rate; compared with marine fished cultivated by other foodstuffs, the excretion rates of nitrogen and phosphorous of the marine fishes cultivated by the compound foodstuffs is lowered by 10 to 15 percent, and cause smaller contamination to the cultivation water body.

The invention relates to full-mixed pellet feed for mutton sheep and a production method thereof. The feed is composed of the following raw materials by weight percentage: 30% to 50% of maize straw, 5% to 15% of alfalfa, 5% to 10% of beet pulp, 5% to 10% of dry brewer's grains, 15% to 25% of corn, 5% to 10% of bran, 5% to 10% of bean pulp, 5% to 10% of cotton seed meal, 1% to 5% of molasses and 1% to 2% of premixed feed. The production method comprises kneading, smashing and mixing the raw materials with the mixing uniformity within 5%, and after mixing evenly, using a special feed pellet pressing machine to pelletize with steam pressure of 0.3 MPa to 0.4 MPa, temperature of 70 DEG C to 75 DEG C and ring die diameter of 6mm to 12mm. The feed has the advantages of being rich in nutrition for all growth stages of mutton sheep, good in palatability, appropriate in concentrate-roughage ratio, favorable for relative stability of potential of hydrogen (pH) in rumen of mutton sheep and capable of effectively preventing digestion from disordering to greatly improve feed conversion rate. Daily gain of mutton sheep having the feed can be improved by more than 10%, and feed cost is reduced by more than 5%.

The invention provides a novel safe biological feed which comprises basic ration, sodium humate, montmorillonite and synbiotics. To feed the livestock and poultry with the novel safe biological feed of the invention can reduce the condensation of ammonia gas in animal houses and improve cultivation environment, meanwhile, the invention enhances the immunity of animal organism, keeps balance of intestinal flora of the livestock and poultry to avoid diarrhea and dysentery and advances the feed conversion ratio and egg production rate.

The invention discloses a meat chick granulated feed containing an active bacterium fermentation ingredient and a traditional Chinese medicine ingredient. The meat chick granulated feed comprises 5-15 percent of the active bacterium fermentation ingredient, 0.3-1 percent of the traditional Chinese medicine ingredient and the balance of a full value chicken feed. The active bacterium fermentation ingredient is prepared by adopting the following method of: adding an aspergillus niger culture solution, a probiotics culture solution and a yeast culture solution to a fermentation medium respectively according to an inoculation quantity of 5-15 percent for fermentation comprising primary anaerobic fermentation and secondary aerobic fermentation; and after the fermentation, carrying out low-temperature drying at 55 DEG C and smashing on the culture solution to obtain the active bacterium fermentation ingredient. Proved through tests, the feed provided by the invention can be used for obviously improving the food consumption and the daily gain of meat chicken and reducing the feed conversion ratio and the diarrhea rate, does not contain antibiotics, has no toxic and side effects and environmental pollution and can be used for providing high-quality green livestock and poultry products.

The invention discloses a feed special for a laying period of a laying hen of a local variety, belonging to the technical field of chicken feed preparation. The feed comprises the following raw materials: 60-65 percent of corns, 2-10 percent of wheat bran, 18-25 percent of bean pulp, 0-1.0 percent of vegetable oil, 4-9 percent of mountain flour, 0.5-1.5 percent of calcium hydrophosphate, 0.2-0.5 percent of table salt, 0.01-0.05 percent of 65 percent lysine, 0.05-0.20 percent of methionine, 0.1-0.15 percent of 50 percent choline chloride, 0.01-0.02 percent of phytase, and 0.5-1 percent of premix. The feed is mainly used specific to the laying period of the laying hen of the local variety; the feed is fed directly in a powder form, so that the feed conversion rate can be effectively improved, the laying peak time can be prolonged, the egg quality can be improved, and the egg broken ratio can be reduced by 3-5 percent.

The invention relates to a general-purpose high-efficiency bulking compound feed for a culter alburnus and a pelteobagrus fulvidraco. The compound feed is prepared from the following raw materials in portions by weight: 13-35 portions of imported steam fish meal, 10-25 portions of imported direct-heat fish meal, 3-5 portions of maggot powder, 2-8 portions of corn protein powder, 5-10 portions of soybean meal, 2-8 portions of fermented soybean, 2-4 portions of soybean meal, 3-8 portions of cottonseed protein, 2-5 portions of peanut meal, 2-5 portions of colza meal, 3-8 portions of meat / bone meal, 2-5 portions of sleeve-fish visceral meal, 23-33 portions of high protein flour, 1.0-3.0 portions of soya bean lecithin, 2.0-5.0 portions of sea fish oil, 0.4-1.0 portion of choline chloride (50%), 0.1-0.3 portion of vitamin C-phosphate (35%), 0.5-1.5 portions of calcium biphosphate, 0.2-0.5 portion of compound multi-vitamin, 0.5-1.5 portions of composite mineral salt, 0.04-0.2 portion of lutein (20%), 0.1-0.3 portion of phagostimulant, 0.1-0.3 portion of micro-ecological preparation, 0.1-0.3 portion of beta-1,3 glucan, 0.01-0.04 portion of phytase and 0.04-0.08 portion of non-starch polyase. The feed can meet all the nutritional requirements of culturing the culter alburnus and the pelteobagrus fulvidraco, so that fish bodies can grow quickly, high feed conversion rate can be achieved, and the coefficient of the feed ranges from 1.2 to 1.4. By using the feed, the immunity performance and the anti-stimulation capability of the culter alburnus and the pelteobagrus fulvidraco can be obviously enhanced, the energy of the fish bodies can be ensured, and the survival rate is improved by 5-10%.

A method for improving the performance of a subject or for improving digestibility of a raw material in a feed (e.g. nutrient digestibility, such as amino acid digestibility), or for improving nitrogen retention, or for improving dietary phosphorus absorption and retention, or for improving the efficacy of the phytase, or for improving the subject's resistance to necrotic enteritis or for improving feed conversion ratio (FCR) or for improving weight gain in a subject or for improving feed efficiency in a subject or for modulating (e.g. improving) the immune response of the subject or for reducing populations of pathogenic bacteria in the gastrointestinal tract of a subject, or for reducing nutrient excretion in manure, which method comprising administering to a subject at least one direct fed microbial in combination with a phytase, wherein the phytase is administered to the subject at a dosage of more than about 1500 FTU / kg feed.

The invention discloses lactobacillus plantarum GLM101 and an application thereof in preparing a feed additive. The strain is preserved in the China General Microbiological Culture Collection Center (CGMCC) with the preservation number CGMCC No. 11156. The lactobacillus plantarum GLM101 has very strong inhibiting ability for escherichia coli, staphylococcus aureus, salmonella typhi, vibrio vulnificus and aeromonas hydrophila, and also has excellent acid-resisting and cholate-resisting abilities. The lactobacillus plantarum GLM101 can be used for adjusting the microecological balance inside the intestines of animals, has the action of enhancing the nonspecific immunity function to prevent diseases, and also can provide trophic factors, promote digestive absorption of nutrients, promote growth of animals, and improve the feed conversion ratio.

The invention discloses prescriptions of feeds for breeding pigeons in different growing phases and a breeding method thereof. Corresponding feed prescriptions are respectively provided according to the characteristics of different growing demands of breeding pigeons in different growing phases at different ages in days, components of the feed prescriptions are common feeds, and are low in cost, convenient to buy and strong in feed conversion ration. The feed prescriptions for growing phases can be used for effectively preventing common diseases of breeding pigeons in the growing stage, balanced supply of energy and protein can be met according to the characteristics of different growing-phase demands of pigeons, the growing development and multiplication of the breeding pigeons can be promoted, the laying amount and the laying quality can be improved, the content of cholesterol in meat can be reduced, and the body health can be benefited.

The invention discloses a Chinese herbal medicine composite probiotics feed additive for pigs and a preparation method of the Chinese herbal medicine composite probiotics feed additive. The Chinese herbal medicine composite probiotics feed additive for the pigs consists of a composite Chinese herbal medicine fermentation material, bacillus, saccharomycetes and lactic acid bacteria. The composite Chinese herbal medicine fermentation material comprises the following ingredients in parts by weight: 5-6 parts of Astragalus membranaceus, 2-3 parts of honeysuckle, 1-2 parts of bean pulp and 1-2 parts of bran. The quantity ratio of the bacillus to the lactic acid bacteria to the saccharomycetes is (6-5):(4-3):(2-1), and the total amount of viable bacteria in each gram of product is more than 2.0*109. Chinese herbal medicines are used as fermentation substrates, and three kinds of probiotics are added to perform fermentation, and therefore, the additive contains the effective constituents of the Chinese herbal medicines and the probiotics are enhanced. The Chinese herbal medicine composite probiotics feed additive for the pigs adjusts the microecological balance of the pig intestines, reduces the intestines problems, promotes the growth, enhance the anti-stress capability and immunity of the pigs, reduces the feed conversion ratio, improves the quality of meat, reduces the foul smell of faeces, improves the breeding environment and increases the economic benefits of pig raising.

The invention discloses a composite microorganism preparation including the active components as follows: at least two of enterococcus faecalis, saccharomyces cerevisiae and bacillus subtilis, and as well as zymosan and corn starch. The preparation is composed of, by weight, 0.1-15 parts of powder of the enterococcus faecalis, 0.1-15 parts of powder of the saccharomyces cerevisiae, 0.1-10 parts of powder of the bacillus subtilis, 0.1 parts of the zymosan and 59.9-74.9 parts of the corn starch. Compared with the prior art, the enterococcus faecalis, saccharomyces cerevisiae and bacillus subtilis are organically combined so that advantages of the bacteria can be achieved completely. The preparation can adapt different hosts and conditions, can partially, even completely replace antibiotics, and can regulate ecologic balance in gastrointestinal tracts, promote growth, increase conversion rate of feeds and enhance immunity. The preparation can improve enteric microorganism environment in animals, inhibit growth of harmful bacteria and promote reproduction of beneficial bacteria, improves animal immunity and enhances disease resistance, supplies nutrients to animals, improves utilization rate of feed and promotes growth of the animals.

The invention provides an efficient pig-feed complex enzyme preparation with enzyme protectant. The efficient pig-feed complex enzyme preparation with enzyme protectant is capable of promoting absorption of nutrients in the feed by pigs to increase feed utilization rate by degrading antinutritional factors, such as beta-glucan, phytic acid and pectin, biomacromolecules and the like. By adding the protectant, inactivity rate in enzymes can be reduced, effective time can be prolonged, and the effects of the enzyme preparation are more evident and longer. The efficient pig-feed complex enzyme preparation with enzyme protectant is high in feed conversion rate, feed-to-grain ratio can be lowered by more than 19%, growth speed of pigs is increased by more than 23%, and enzyme activity is kept in 18 months and can be kept by more than 90%.

A feed additive composition comprising a direct fed microbial in combination with a protease, a xylanase, an amylase and a phytase, and a method for improving the performance of a subject or for improving digestibility of a raw material in a feed (e.g. nutrient digestibility, such as amino acid digestibility), or for improving nitrogen retention, or for avoiding the negative effects of necrotic enteritis or for improving feed conversion ratio (FCR) or for improving weight gain in a subject or for improving feed efficiency in a subject or for modulating (e.g. improving) the immune response of the subject or for promoting the growth of beneficial bacteria in the gastrointestinal tract of a subject, which method comprising administering to a subject a direct fed microbial in combination with a protease, a xylanase, an amylase and a phytase.

The invention belongs to the field of animal feed processing and particularly relates to a novel feed for cattle and sheep and a preparation method of the novel feed. The novel feed is prepared by processing byproducts, namely corn steep liquor, corn bran, corn gluten meal, saccharified liquid residues and yeast bodies on a production line of isomaltooligosacharide, as well as corn stalks, a compound premix for the cattle and the sheep, and corn flour; the produced complete feed meets cattle and sheep production requirements, and solves he problems of poor utilization of the byproducts and environment pollution during the production of the isomaltooligosacharide; and besides, the processed complete feed for the cattle and the sheep is low in cost, complete in nutrition, good in palatability, high in feed conversion rate and very suitable to be used for the large-scale captive breeding of the cattle and the sheep, so that not only is the culture benefit increased, and simultaneously the problem that the cattle and the sheep scramble food with pigs and poultry is solved.

The invention relates to a heartleaf houttuynia herb livestock and poultry feed additive, which comprises the following components in part by weight: 25 to 40 parts of heartleaf houttuynia herb, 20 to 40 parts of pine needle, 10 to 20 parts of indigowoad root, 10 to 20 parts of astragalus, 5 to 10 parts of honeysuckle flower and 10 to 20 parts of dandelion. The heartleaf houttuynia herb livestock and poultry feed additive has the advantages of: (1) special effect on common diarrheal disease of livestock and poultry, prevention protection rate of over 99 percent and mortality of zero; (2) average daily gain of 0.74 kilogram in the whole course feeding process of live pigs, which is improved by 7.2 percent compared with that of a blank control group of 0.69 kilogram, and improvement of feed conversion rate of over 9.7 percent; and (3) average daily gain per broiler of 43.7 grams, which is improved by 5.3 percent compared with that of the blank control group of 41.5 grams, and improvement of feed conversion rate of 5.9 percent.

The invention pertains to the field of microbial feed additives and relates to a novel feed additive containing lysozyme, probiotic powder and a carrier and a preparation method thereof, wherein the probiotic powder is bacillus subtillis powder and / or lactobacillus sp. powder and / or saccharomyces cerevisiae powder. The novel feed additive is the first time to add the lysozyme to a probiotic preparation which is then prepared to the novel feed additive. A product has and enhances the advantages of both the microecological preparation and the lysozyme, has better effects than the independently added microecological preparation or the lysozyme and can significantly improve weight increment and the feed conversion rate, the balance of intestinal flora as well as immunity and disease resistance. The novel feed additive has multi-effects of treatment, prevention, health care and immunity strengthening as well as simple preparation technology and is applicable to industrialized application.