787 results about "Weaned piglets" patented technology

The pig circular ring virus 2 type (PVC2) inactivated vaccine (SH individual plant) of the invention belongs to biotechnology field. The pig circular ring virus 2 type poisonous individual plant SH belongs to circular ring virus section circular ring virus genus which has been preserved in Wuhan institute of virology, Chinese academy of sciences. The shanghai separated individual plant SH of purified PCV2 virus is obtained by gathering raw material from hogpen which happened bad weaning piglet multisystem exhaustion failure syndrome in Shanghai in 2002 year, separating, appraising and purifying virus. The PCV2-SH plant is proliferated in mass in PK-15 cell, inactivated through methyl aldehyde and emulsified with liquid paraffine adjuvant to prepare conventional liquid paraffin(e) adjuvant immunomodulators for vaccines. The laboratory has trial-manufactured five lots vaccines successfully which are good safety and also can induce pig bring immune protection effect, made out a draft rules for vaccines production and testing. The inactivated vaccine proved by every aspects experiment has met state biological products standard completely.

The invention relates to a feed for early weaned piglets, which belongs to the field of the feed. Main ingredients of the feed comprise expanded corn, full-fat soybean, fat powder, steam fish meal, acidified whey powder, fermented soybean meal, a complex enzyme preparation, a micro-ecological preparation, amino acids, complex vitamins, complex trace elements and the like. The digestive physiological characteristics of the weaned piglets are fully considered on the selection and the processing of raw materials, thereby greatly improving the palatability and the digestion rate of the feed; simultaneously, through the synergistic compatibility of an egg yolk antibody, lactein, sodium humate and the complex micro-ecological preparation, the diarrhea rate of the weaned piglets is reduced, the effects are superior to those of adding antibiotics into the feed, and the feed is the green, environmentally-friendly and nuisanceless feed. An animal feeding experiment proves that the feeding effects are ideal, the palatability is good, the piglets after weaning are high in average feed intake, fast in daily weight gain and low in diarrhea rate, and the feed has a good promoting effect for growth and health conditions of the weaned piglets and can meet the demands of most of raisers at present.

The invention discloses a corn type mixed feed for a weaned pig and a preparation method thereof. The mixed feed comprises the following raw materials: dried corn, puffed corn, soybean meal, puffed soybean, a wheat germ cake, flour, fish meal, plasma protein powder, whey powder, soya-bean oil, stone flour, calcium hydrogen phosphate, salt, lysine 70%, methionine 99%, threonine 99%, choline chloride 60%, glucose, compound enzyme, a vitamin premix and a trace element premix. The preparation method comprises the following steps: crushing; mixing; and granulation. The invention has the following beneficial effects: nutritional requirements of the weaned pig are met; the mixed feed has good palatability and a high digestive rate and can reduce various discomforts caused by weaning stress, enhance the immunity of the weaned pig, improve food consumption and productivity of the weaned pig, promote rapid and healthy growth of the weaned pig and guarantee the survival rate of the weaned pig.

The invention provides compound feed for teaching piglets to eat foods other than breast milk, which is used for weaning piglets and teaching the piglets to eat foods other than breast milk, and comprises the following components in part by weight: 212.4 parts of corn starch, 154.0 parts of bulked corn, 100.0 parts of 46 percent of bulked bean pulp, 40 parts of fish meal, 100 parts of wheat flour, 5 parts of calcium powder, 21 parts of calcium hydrophosphate, 2 parts of table salt, 20 parts of soybean oil, 5 parts of lysine, 2 parts of threonine, 1.5 parts of choline chloride, 10 parts of premix, 0.2 part of complex enzyme, 0.3 part of pig Duowei, 0.2 part of sweetener, 0.3 part of flavouring agent, 3 parts of baking soda, 20 parts of cane sugar, 30 parts of glucose, 50 parts of egg powder, 70 parts of soy protein concentrate, 50 parts of fermented bean pulp, 6 parts of acidizer, 100 parts of whey powder, 0.5 part of mould removing agent, 0.3 part of antioxidant and 0.3 part of mildewpreventive. In the invention, the problems of incomplete immune functions, low disease resistance, inadequate digestive ferment, incomplete upper gastrointestinal development, low digestion and absorption ability, susceptibility to diarrhea and the like of piglets.

The invention discloses a Chinese herbal medicine additive for reducing the stress reaction of a weaned pig. The Chinese herbal medicine additive comprises the ingredients of: codonopsis pilosula, rhizoma atractylodis macrocephalae, poria cocos, Chinese yam, astragalus mongholicus, lotus seed, fried green beans, fried coix seed, radix ophiopogonis, schisandra chinensis, polygonum multiflorum, glossy privet fruit, eclipta alba, date kernel, platycladi seed, cortex albiziae, polygala tenuifolia, uncaria rhynchophylla, keel, oyster, coked medicated leaven, coked maltum, scutellaria baicalensis, cape jasmine, cortex moutan, red paeony root, dandelion, radix isatidis, cyrtomium fortunei, fried betel nut, purslane and liquorice. The Chinese herbal medicine additives disclosed by the invention in feed accounts for 1.5-2wt% in feed; and by adopting the Chinese herbal medicine additive, the immunity of the weaned pig can be improved, and the stress reaction of the weaned pig can be reduced. The Chinese herbal medicine additive has the characteristics of low price and no toxic and side effect.

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 compound feed for early-weaned piglets, the compound feed for the piglets has nutrient balance, high digestion rate of nutrients and good palatability and can significantly improve the feed intake, reduce the diarrhea rate, improve the survival rate, lead pigs to have red skin and bright hair, significantly improve the uniformity, and improve the daily weight gain and the feed conversion rate by being used for feeding the early-weaned piglets, thereby laying a solid foundation for rapid growth during the growing-finishing stage; and the various production performance indexes can be further significantly improved by combining with isolated feeding and the all-in and all-out system.

The invention discloses a fermentation type botanical weaned piglet feed additive. The feed additive is obtained through mixing a component A, a component B and a component C, wherein the component A is prepared through crushing and fermenting Moringa tree leaf, Eucommia ulmoides, Radix Astragali, Radix Codonopsis, Manyprickle Acathopanax Root, honeysuckle flower, licorice root and Herba Taraxaci; the component B is prepared through crushing and mixing purslane, hawthorn fruit and pine needle powder; and the component C is prepared through mixing an Origanum vulgare extract and aloe polysaccharides. The feed additive prevents diarrhea, effectively improves the immunities of piglets, avoids the use of antibiotic products, can completely substitute antibiotic medicines, solves a stress problem of weaned piglets, effectively improves the immune functions of the piglets, reduces the disease incidences and the mortality, and guarantees the gastrointestinal tract health of the weaned piglets, so the production performance and the culturing benefit of the weaned piglets are improved.

The invention discloses a non-resistance piglet milk replacer and an application thereof. The non-resistance piglet milk replacer is prepared from the following raw materials in parts by weight: 30-45 parts of extruded corn, 15-20 parts of extruded soybean, 2-5 parts of plasma protein powder, 2-5 parts of dried porcine soluble, 8-15 parts of whey powder, 3-5 parts of excellent white fish meal, 5-8 parts of lactose, 2-4 parts of calcium hydrophosphate, 0.5-1 part of zeolite powder, 2-4 parts of lysine, 0.1-0.3 part of methionine, 0.1-0.3 part of threonine, 0.1-0.15 part of tryptophan, 0.1-0.3 part of acid proteinase, 0.1-0.3 part of trace elements for piglets, 0.1-0.3 part of vitamin for piglets, 0.1-0.3 part of lactic acid bacteria fermented powder, 0.1-0.4 part of glutamine dipeptide, 0.6-1.2 parts of an acidity regulator, 1.5-2.4 parts of an antioxidant, 0.1-0.3 part of allicin and 0.1-0.3 part of carvacrol. According to the milk replacer disclosed by the invention, weaned piglet diarrhea is reduced, and / or the survival rate of the piglets is improved.

The invention relates to a Chinese herbal medicine additive, especially relates to the Chinese herbal medicine additive for preventing and controlling diarrhea of weaned piglets and promoting growth. The Chinese herbal medicine additive comprises the following components by weight percentage: 8-12% of coptis, 7-12% of dandelion, 8-13% of phellodendron, 9-11% of clerodendroa cyrtophyllum, 9-10% ofduckweed straw, 13-16% of isatis root, 3-6% of white peony root, 8-11% of Radix Astragali, 3-7% of sophora flavescens, 4-6% of pasque flower, 3-6% of Poria cocos and 4-5% of Chinese yam. The Chinese herbal medicine additive of the invention is capable of improving the diarrhea condition of weaned piglets and promoting the growth, and has no toxicity, no side-effect and no medicine residue.

The invention relates to the field of a feed additive, and particularly relates to a compound feed additive replacing feed antibiotics in a piglet daily diet, and applications of the compound feed additive. The compound feed additive comprises a compound enzyme preparation applicable to piglets, a microecological preparation and a functional oligosaccharide. The compound additive comprises an NSP enzyme capable of degrading antinutritional factors in the feed, so that the growth performance of piglets and the utilization rate of the feed can be effectively improved, the feed-weight ratio can be reduced by 12.88%, the average daily grain can be improved by 25.6%, and the effect is far higher than that of the feed antibiotics; the probiotic flora including bacillus subtilis, bacillus licheniformis, clostridium butyricum and the like are increased, small amount of functional oligosaccharide is added, so that the microecological environment of animal intestinal tracts can be improved, the growth and propagation of pathogenic microorganisms can be inhibited, the stress reaction of weaned piglets can be solved, the diarrhea rate and morbidity of the sucking piglets can be greatly reduced, the action effect is superior to those of the feed antibiotics, and the feed additive can effectively replace feed antibiotics in a piglet daily diet.

The invention discloses feed for preventing diarrhea of weaning piglets. The feed consists of the following components in parts by weight: 200-300 parts of corn flour, 200-300 parts of rice meal, 100-180 parts of expanded soybean meal, 30-50 parts of fish meal, 220-270 parts of soybean meal, 80-120 parts of whey powder, 80-120 parts of glucose, 50-100 parts of serum concentrate, 20-45 parts of soybean oil, 20-45 parts of calcium hydrogen phosphate, 30-60 parts of calcium formate, 5-15 parts of lysine, 1-3 parts of methionine, 3-6 parts of threonine, 5-10 parts of compound trace elements, 1-2 parts of compound vitamin, 1-2 parts of probiotics, 10-20 parts of short chain fatty acids, 5-8 parts of organic compound acid, 0.5-1 part of enzyme preparation and 1-2 parts of phagostimulant. The feed provided by the invention can be used for effectively avoiding the negative growth of the weight of piglets, reducing the mortality rate of piglets subjected to weaning and the incidence of disease (diarrhea), realizing the rapid growth of the piglets, and obviously shortening the production cycle of the piglets.

The invention discloses non-resistant dust-free piglet creep formula feed and a preparation method thereof. The feed is prepared from the following components: corns, fermented corns, soybean meal, fermented soybean meal, expanded soybean flour, expanded corn flour, imported fish meal, spray-dried plasma proteins, dried porcine solubles, powdered whey, soybean oil, sucrose, molasses, sodium glutamate, a feeding promoting agent, Yibao phospholipid, yeast autolysate, an acidifying agent, stone powder, calcium hydrogen phosphate, table salt, 98.5 percent of lysine, 98.5 percent of threonine, 10 percent of tryptophan, special compound enzyme for early-weaned piglets, phytase enzyme, a micro-ecological preparation, a Chinese herbal medicine heath preserver, antibacterial peptide, immunopotentiator, 50 percent of choline chloride and a premix. The preparation method comprises the following steps: firstly, separately preparing granulated feed products and powdery feed products; and then mixing the granulated feed products with the powdery feed products to obtain the non-resistant dust-free piglet creep formula feed. According to the feed disclosed by the invention, antibiotics are not added, a formula is scientific, the dust of the product is low, the palatability and the immunity are improved, and a diarrhea ratio of piglets is reduced.

The invention discloses a feed for lactating sows and a preparation method thereof. The feed comprises the following components in parts by weight: 300-400 parts of corn with caloric value being 3250kcal / kg, 100-120 parts of bran, 10-15 parts of first grade bean oil, 200-250 parts of wheat, 200-230 parts of 43% of bean pulp, 2-5 parts of salt, 10-12 parts of stone powder, 12-14 parts of calcium hydrophosphate, 0.3-1 part of 99% of methionine, 0.5-1 part of 98% threonine, 2-5 parts of 98% lysine, 0.1-0.5 part of phytase, 0.5-2 parts of MYCO-AD, 1.5-2 parts of 60% choline chloride, 20-50 parts of Peruvian fish meal, 2-4 parts of SV52 and 2-4 parts of M-S5. The feed has scientific mixture ratio, is convenient to prepare, reduces the use amount of the antibiotics, can improve the weaning weight of the sows, improve the weight of the weaned pigs and shorten the weaning time and simultaneously can positively influence the health conditions of the suckling pigs, improve the survival rate andincrease the economic benefits.

The invention discloses feed for improving the immunity of weaning piglets. The feed consists of the following components in parts by weight: 100-200 parts of corn flour, 150-180 parts of rice meal, 150-200 parts of flour, 100-180 parts of expanded soybean meal, 30-50 parts of fish meal, 120-150 parts of soybean meal, 80-120 parts of soybean concentrate, 80-120 parts of whey powder, 80-120 parts of glucose, 50-100 parts of serum concentrate, 20-45 parts of soybean oil, 20-45 parts of calcium hydrogen phosphate, 30-60 parts of calcium formate, 5-15 parts of lysine, 1-3 parts of methionine, 3-6 parts of threonine, 5-10 parts of compound trace elements, 1-2 parts of compound vitamin, 1-2 parts of probiotics, 10-20 parts of short chain fatty acids, 5-8 parts of organic compound acid, 0.5-1 part of enzyme preparation and 1-2 parts of plant extracts. The feed provided by the invention can be used for improving the sub-health status generated in the weaning process, avoiding the negative growth of the weight of piglets, reducing the mortality and incidence of diseases, and realizing the rapid growth of weaning piglets.

The invention relates to a milk replacer for piglets. The milk replacer contains the following components: non-active whole milk soybean meal, puffed rice, whole milk powder, whey powder, glucose, water-soluble fat powder, lysine, methionine, threonine, composite minerals, composite vitamins, a compound enzyme preparation, synbiotics and plant extracts. Experimental results show that the milk replacer provided by the invention can compensate for the lack of breast milk for piglets, improve the growth and health of piglets, improve ingestion level of weaning piglets and alleviate the weaning stress of piglets.

The invention relates to a plant-derived piglet feeding attractant. The technical scheme adopted is as follows: the attractant comprises the following raw materials in percentage by weight: 30 to 50 percent of puffed cereal, 10 to 20 percent of flour, 10 to 20 percent of fermented soybean meal, 3 to 5 percent of wheat protein isolate, 3 to 6 percent of milk powder, 5 to 10 percent of lactose, 0.5 to 1 percent of acidifier, 3 to 6 percent of vegetable oil, 1 to 2 percent of calcium additive, 0.1 to 0.3 percent of salt, 1.0 to 2.0 percent of amino acid, 0.1 to 0.3 percent of composite trace element, and 0.03 to 0.08 percent of composite vitamin. The plant-derived piglet feed attractant is applied to piglet feeding attraction, can effectively improve the feed intake before and after a piglet weans, improve the weight before weaning and the weight 14 days after weaning, reduce the diarrhoea rate of the piglet after weaning so that the weaned piglet effectively overcomes weaning stress, and has important significance in improving the piglet production performance and survival rate.

The invention discloses a traditional Chinese medicinal addition feed for weaned piglets and a preparation method thereof. The addition feed is prepared by the following raw materials in parts by weight: 50-60 parts of extruded corns, 10-15 parts of soybean meal, 5-8 parts of puffing soybean powder, 10-15 parts of wheat middling, 2-3 parts of fish meal, 4-6 parts of rape seed cakes, 2-3 parts of coconut oil, 5-8 parts of medical stone, 1-1.5 parts of calcium hydrogen phosphate, 0.3-0.5 part of salt, 0.2-0.3 part of chlorine chloride, 0.5-1.5 part of a premix compound, 0.4-0.6 part of a compound acidifier, 3-4 part of Chinese hawthorn seed meal, 2-3 parts of ficus erecta, 2-3 parts of helianthus annuus plate, 1-3 parts of berberis julianae schneid, 2-4 parts of sweet potato root, 2-3 parts of portulaca oleracea, 1-2 parts of eucalyptus robusta smith, 2-3 parts of forsythia suspensa, 3-4 parts of poria and 2-3 parts of meadowrue root and rhizome. The traditional Chinese medicinal addition feed can stimulate piglet appetite, increase body resistance, reduce piglet diarrhea morbidity and promote the piglets to quickly grow.

The invention discloses a weaned piglet nucleotide feed additive. The weaned piglet nucleotide feed additive comprises, by weight, 0.8 to 1.3 of adenosine monophosphate 5'-AMP, 0.3 to 0.8 of cytidine monophosphate 5'-CMP, 1.1 to 1.5 of guanosine monophosphate 5'-GMP and 0.7 to 1.4 of uridine monophosphate 5'UMP. The invention further discloses a preparation method and an application of the feed additive. According to the weaned piglet nucleotide feed additive, stress reaction of weaned piglets can be effectively relieved, the piglet grazing rate and the feed utilization efficiency are improved, the oxidation resistance and the immune function of weaned piglets are improved apparently, the organic resistance is enhanced, and accordingly, important significances are provided for modern scientific, intensive and large-scale pig production.

The invention discloses a wheat middling-corn compound feed for weaned pigs. The wheat middling-corn compound feed comprises the following components in part by weight: 15-17 parts of corn, 8-10 parts of broken rice, 45-50 parts of wheat middling, 4-4.5 parts of biscuit powder, 5-6 parts of wheat bran, 8-10 parts of soybean meal, 2-2.5 parts of chocolate, 1-2 parts of fish powder, and 0.15-0.2 part of composite microorganism bacterium agent, wherein the composite microorganism bacterium agent comprises one or more of enterococcus, saccharomycete and bacillus. The compound feed reduces the content of the corn and the soybean pump by using the wheat middling as a substitute, so that the production cost of the feed is greatly reduced. The wheat-middling compound feed further contains composite microorganism bacterium agent, so that the weaned pigs can well digest the wheat middling, and the nutritions needed for the growth and development of the weaned pigs are completely satisfied; the growth performance is remarkably improved relative to the corn-soybean pulp daily ration; moreover, diarrhea incidence rate is not improved, but reduced, thereby providing a good basis for post high-speed growth of the weaned pigs.

The invention discloses a probiotics fermentation Chinese medicinal herb composite feed additive used for preventing and treating diarrhea of delivery room suckling piglets and weaning conservation piglets. According to laboratory repeated fermentation experiments and actual using effect of products at a plurality of scaled pig farms, a screened and determined formula is as follows: bacillus cereus inoculum size 2-4%, bacillus subtilis inoculum size 2-4%, Chinese medicinal herb inventory 8-20% (main ingredients of which are the root of Chinese pulsatilla, myrobalan, liquorice and schisandra chinensis), and performing liquid state fermentation and then drying. The probiotics fermentation Chinese medicinal herb composite feed additive used for preventing and treating diarrhea of delivery room suckling piglets and weaning conservation piglets can effectively resolve the problem of piglet diarrhea during scaled pig farming process, effectively improve organism immunity and disease resistance capability of piglets, adjust animal enteric micro-ecology balance and repair intestine mucosa damage, and has the effects of improving weaning piglet daily gain by 6%-12% and feed use ratio by 10%-15% and lowering diarrhea rate by 25%-35%. The probiotics fermentation Chinese medicinal herb composite feed additive used for preventing and treating diarrhea of delivery room suckling piglets and weaning conservation piglets is an ideal green environment-friendly safe and novel feed addictive for replacing antibiotic medicines in diarrhea controlling.

The invention discloses weaned pig transition compound feed, which comprises the following ingredients in parts by weight: 37 to 46 parts of corn, 0 to 19 parts of functional energy and protein feed, 5 to 10 parts of extruded soybean, 7.5 to 8 parts of shelled soybean meal, 8 to 12 parts of lactose, 2 to 3.5 parts of imported fish meal, 0 to 2 parts of concentrated soybean,0.5 to 0.6 parts of mountain flour, 0.71 to 1.8 parts of dicalcium phosphate, 0.9 to 1.1 parts of premix compound, 0.26 to 0.5 parts of lysine, 0.17 to 0.25 parts of methionine,0.2 to 0.3 parts of common salt, 0.24 to 0.26 parts of zinc oxide, 0.06 to 0.15 parts of threonine, 0.02 to 0.05 parts of tryptophan, 0.01 to 0.02 parts of sweetening agents, 0.1 to 0.12 parts of sodium butyrate, 0 to 0.4 parts of emulsifying agents, 0 to 2.5 parts of cane sugar, 0.1 to 0.12 parts of compound microorganism bacterium agents, 0 to 0.02 parts of flavouring agents, 0 to 0.2 parts of acidifying agents,0 to 2 parts of bean oil, 0 to 8 parts of whey powder, 0 to 15 parts of immuno-enhancers and 0 to 3 parts of plasma protein powder, wherein the compound microorganism bacterium agents comprise one kind of several kinds of lactic acid bacteria. The weaned pig transition compound feed provided by the invention is a key measure for ensuring the continuous growth of weaned piglets. Beneficial microorganisms are added into the weaned pig transition compound feed, the occurrence of diarrhea of the weaned piglets can be reduced, in addition, the digestion is easy, and piglets like to eat the feed.

The invention discloses a piglet creep feed as well as a preparation method and application thereof. The piglet creep feed comprises the following components: corns, extruded corns, extruded rice, spray-dried egg powder, extruded soybeans, soybean meal, fermented soybean meal, dried porcine soluble, fish soluble protein, an astragalus membranaceus polysaccharide extract, a herba houttuyniae extract, an acanthopanax senticosus extract, licorice powder, a probiotic agent, fish meal, whey powder, soybean oil, mountain flour, calcium hydrophosphate, a complex enzyme preparation, L-lysine, methionine, threonine, choline chloride, zinc oxide, an acidifier, ferrous glycine, a flavoring agent, a sweetening agent, an antioxidant, a mildew preventive and nucleus materials for weaned piglets; all the components are mixed uniformly to prepare the creep feed. The piglet creep feed provided by the invention can not only solve the problems about digestion coefficient and absorptivity of weaned piglets, but also improve the immunity of weaned piglets, promote gastrointestinal development and reduce diarrhea of piglets, can further fully replace a creep feed containing plasma proteins, therefore the piglet creep feed can serve as a high-quality piglet creep feed for application.

The invention discloses an Enterococcus faecalis strain SBD, of which the collection number is CGMCC No.4848. The strain is a Gram positive strain and is spherical according to observation with microscope, and the strain does not form spores; the strain can well grow on a Mann, Rogosa and Sharpe (MRS) agar plate and can grow into a round, smooth and raised bacterial colony like a grey white dew and with a diameter of 0.5 to 1 millimeter within 48 hours; and the strain can grow in a facultatively anaerobic environment, the growth temperature range is from 10 to 50 DEG C, the optimal growth temperature is 30 to 40 DEG C, and the growth pH value range is from 4 to 10 and the optimal pH value is 6.5. The bacterial preparation made by the strain is nontoxic and safe, can resist gastric juice and cholate, has a strong inhibition effect on various harmful bacteria and can be widely used in livestock breeding industry (by directly adding into daily ration or drinking water of animals) to increase the disease resistance in animals; and the preparation is expected to replace antibiotic for feed purpose and can obviously improve average weight of weaned piglets, reduce a feed-to-meat ratio and improve living environment of livestock and therefore has a bright prospect.

The invention discloses a process for preparing yeast cultures, which comprises the following steps of sequentially subjecting brewer's yeasts to strain enlarging culture, liquid aerobic fermentation and liquid anaerobic fermentation, drying liquid fermented products, mixing the liquid fermented products with a grain culture medium, subjecting the mixture to solid anaerobic fermentation for 20 to 40 hours at the temperature between 40 DEG C and 60 DEG C, adding hydrolase, preserving heat for 2 to 8 hours at the temperature between 40 DEG C and 60 DEG C, heating the temperature to 70 DEG C to 90 DEG C, preserving heat for 20 seconds to 10 minutes, and drying and grinding solid fermented products to obtain the yeast cultures. According to the process for preparing the yeast cultures, the combined fermentation process of the liquid anaerobic fermentation and the solid anaerobic fermentation is used, and compared with yeast cultures prepared by the liquid anaerobic fermentation or the solid anaerobic fermentation, the prepared products are substantially high in the crude protein content and the crude fat content and capable of greatly increasing the concentration of rumen microbial proteins, feed intakes and daily gains of weaned pigs, the feed conversion rates and the livability of the weaned pigs and reducing diarrhea rates of pigs.

The invention provides a lactobacillus reuteri fermented liquid feed, and a preparation method and application thereof, belonging to the field of microbial fermentation feed and liquid feed. The lactobacillus reuteri fermented liquid feed of the invention is the liquid fermentation feed prepared according to the optimized fermented liquid feed technology with Lactobacillus reuteri (preservation number: CGMCC 3457) which is subject to directional breeding selection. The lactobacillus reuteri fermented liquid feed comprises not only a dry matrix for fermentation of the lactobacillus reuteri with 108-540 cfu / g of viable bacteria content of the lactobacillus reuteri but also a lactic acid metabolic product with a moisture content of 40-60% and a pH value of 4.5-5.5. The fermented liquid feed also comprises 4% of premix compound which is added after fermentation is completed; and the 4% of premix compound is free from antibiotics. The fermented liquid feed of the invention features in simple technique, easy operation by free-range keepers and can carry out good fermentation in extensive pig farm environment. In addition, the fermented liquid feed enjoys remarkable effect in stimulating growth of weaned pigs, growing pigs and growing and fattening pigs. The feed can improve efficiency of feed utilization, promote growth of animals, improve and maintain balance of intestinal flora, improve immunity and premonition of animals, improve animal body type and product quality, noticeably reduce feed cost and increase economic benefits.

A composite preparation for reducing a diarrhea rate of weaned piglets is disclosed. The composite preparation is prepared by mixing an oligosaccharide-acidifier solution and a probiotic fermentation liquor according to a volume ratio of 1:(3-5). Each mL of the oligosaccharide-acidifier solution contains 2500-3500 mug of oxalic acid, 30-60 mug of tartaric acid, 50-100 mug of malic acid, 4000-5500 mug of lactic acid, 2500-4000 mug of citric acid, 0.05-0.2 g of glucose, 0.05-0.1 g of isomaltooligosaccharide, 0.02-0.06 g of fructooligosaccharide and 0.08-0.15 g of chitosan oligosaccharide. The probiotic fermentation liquor is prepared by mixing a mixed fermentation liquor of lactobacillus plantarum and pediococcus pentosaceus and a clostridium butyricum fermentation liquor according to a volume ratio of (2-4):1. A preparing method of the composite preparation is also disclosed. The composite preparation reduces the diarrhea rate of weaned piglets, reduces the death rate of piglets, and boosts productive performance and immunity of piglets.

The invention relates to a strain suitable for producing a live, orally applicableEscherichia coli vaccine for the prevention of post-weaning diarrhoea in pigs, and the procedure suitable for producing that strain. The essence of the strain is that the enterotoxin-free and originally wild-type Escherichia coli strain simultaneously produces two adhesive fimbriae (F4 and F18), whereas the essence of the procedure is that the enterotoxin-producing ability if the wild, pathogenic, enterotoxigenic Escherichia coli strain originally capable of producing enterotoxins and F18 fimbriae is abolished by a genetic intervention while retaining the ability of the strain to produce F18 fimbria facilitating adhesion to the small intestinal wall of weaned piglets, and subsequently the strain thus modified is rendered capable of producing a further surface adhesion fimbria (F4).

The invention discloses feed for weaned piglets. The feed comprises the following raw materials in parts by weight: 45-55 parts of corn, 10-20 parts of wheat, 5-10 parts of extruded soybean, 10-20 parts of bean pulp, 3-7 parts of wheat middling, 1-4 parts of soybean oil, 1-4 parts of steamed fish powder, 2-5 parts of glucose, 0.2-0.4 part of acidifying agent, 1.2-1.5 parts of calcium hydrophosphate, 0.7-1.0 part of stone powder, 0.1-0.3 part of salt, 0.3-0.5 part of compound amino acid, 0.1-0.3 part of compound vitamin, 0.1-0.3 part of compound trace element, 0.05-0.15 part of enzyme preparation and 0.05-0.15 part of microecological preparation. The feed is used for the weaned piglets with the age of 6-10 weeks, and has the beneficial effects that the feed intake of the weaned piglets can be increased, the growth can be enhanced, the feed reward can be improved, the diarrhea rate and the feed-changing stress of the weaned piglets can be reduced and the use of antibiotics and bad results caused by the antibiotics are reduced.