84 results about "Weaned piglets" patented technology

The invention belongs to the technical field of microorganisms, and particularly discloses bacillus velezensis DZ-4-002 and application thereof. According to the bacillus velezensis DZ-4-002 provided by the invention, the Latin name is bacillus velezensis, and the preservation number of the bacillus velezensis DZ-4-002 is CGMCC (China General Microbiological Culture Collection Center) No.25955. The strain not only can produce nitrite reductase at high yield, but also can improve the growth performance of animals and the milk production performance of cows. Within the experimental range of the invention, the bacillus velezensis provided by the invention not only can improve the egg production increase rate, the average egg weight and the feed utilization rate of laying hens, but also can improve the average daily gain, the average daily feed intake and the feed utilization rate of weaned piglets, and the average milk yield, the milk-feed ratio and the lactose content in milk of dairy cows. The method has a good application prospect in the fields of nitrite degradation agents, feeds, additives of the feeds and the like.

The invention relates to the technical field of microorganisms, in particular to ruminococcus buchneri and application of in-vitro pure culture metabolic supernate of the ruminococcus buchneri in promoting intestinal development of piglets. The invention relates to ruminococcus buchneri, and the collection number of the ruminococcus buchneri is ATCC (American Type Culture Collection) 51896. The ruminococcus buchneri and the in-vitro pure culture metabolic supernate thereof can obviously improve the unit intestinal weight of the cecum of the weaned piglets, and have the trend of increasing the unit intestinal weight of the jejunum and the ileum of the piglets, increasing the average daily feed intake and reducing the feed-to-gain ratio. The in-vitro organoid culture result also shows that the amplification efficiency of the jejunum organoid of the piglet is remarkably improved.

The invention discloses a compound feed for weaned piglets and a preparation method thereof, relates to the technical field of feeds, and solves the problems of high stress, low food consumption, slow weight gain, intestinal damage, high diarrhea rate and low survival rate of weaned piglets. Each ton of compound feed for weaned piglets comprises the following raw materials: corn, broken rice, soybean meal, super steam fish meal, extruded soybeans, fermented soybean meal, peanut meal, flour, whey powder, glucose, white sugar, soybean oil, linseed oil, coconut oil, calcium formate, calcium hydrophosphate, amino acid, a vitamin additive, a trace element premix, composite dietary fibers, auxiliary materials and the like. The feed additive can improve the feed intake of piglets, protect the intestinal health of the piglets, enhance the immunity, relieve the weaning stress of the piglets, reduce the incidence rate of diarrhea and disease of the piglets and improve the weight gain rate of the piglets.

The invention discloses a piglet intestinal health targeting probiotic engineering bacterium compound as well as preparation and application thereof. The compound is FP (at) EcN-pnirNKL, wherein a) the EcN-pnirNKL is an engineering strain which is constructed by taking escherichia coli Niss1917 (EcN) as a host and carrying a recombinant plasmid pnirBMisL-NK-Lysin, and a) the EcN-pnirNKL is an engineering strain which is constructed by taking escherichia coli Niss1917 (EcN) as a host and carrying a recombinant plasmid pnirBMisL-NK-Lysin; b) the recombinant plasmid pnirBMisL-NK-Lysin comprises an NK-Lysin gene optimized by a codon, and the NK-Lysin gene is integrated into the anaerobic inducible plasmid pnirBMisL through homologous recombination; c) the FP is a composite nano-particle which takes nano mesoporous silica (MSN) as a core and is formed by crosslinking fucoidin and rhodiola rosea polysaccharide; and d) the FP (at) EcN-pnirNKL is an oral delivery system which is formed by encapsulating the engineering bacterium EcN-pnirNKL in the FP nano particles. When the compound is applied to prevention and treatment of stress response of weaned piglets, various typical symptoms, including weight loss, colon shortening, histopathological injury and colitis disease response, of the piglets induced by dextran sodium sulfate can be remarkably relieved, and meanwhile, the integrity and functions of an intestinal barrier structure are effectively protected.

The invention relates to the technical field of biology, in particular to application of lactobacillus reuteri RZ-D15L14 and a metagen to reduction of the diarrhea rate and the death and culling rate of weaned piglets, the lactobacillus reuteri is lactobacillus reuteri, the strain number of the lactobacillus reuteri is RZ-D15L14, the lactobacillus reuteri is preserved in the China Center for Type Culture Collection (CCTCC), and the preservation number is CCTCC NO: M 20231503. After 500mg / kg of lactobacillus reuteri RZ-D15L14 is added into daily ration, the antioxidant function of the body and the intestinal health can be enhanced by improving the activity of antioxidant enzyme, reducing the content of oxidation products and improving the content of short-chain fatty acid in the intestinal tract, so that the effect of reducing the diarrhea rate and the death and culling rate of the piglets is achieved, and the positive effect is particularly outstanding in weak piglets.

The invention belongs to the technical field of additives, and particularly relates to application of osthole in preparation of an additive for preventing diarrhea of weaned piglets. Aiming at the problem that the influence of the cnidium lactone on the piglet diarrhea is not found at present, the invention firstly discovers that the piglet diarrhea can be prevented by adding the cnidium lactone into the daily ration of the weaned piglets, so that the invention provides the application of the cnidium lactone in preparing the additive for preventing the weaned piglet diarrhea. The invention further finds that the coated cnidium lactone coated by a specific method has a better effect of preventing piglet diarrhea. A brand new additive substance cnidium lactone is developed for weaned piglet diarrhea, and the cnidium lactone serving as a plant extract is safe, free of toxic and side effects, remarkable in effect of preventing weaned piglet diarrhea and suitable for large-scale application and popularization.

The invention provides a traditional Chinese medicine composition for improving the survival rate of piglets and a preparation method and application thereof, and belongs to the technical field of feed additives. The traditional Chinese medicine composition is prepared from the following raw materials in parts by weight: 6 to 10 parts of fructus forsythiae, 15 to 22 parts of radix isatidis, 15 to 22 parts of radix scutellariae, 8 to 12 parts of honeysuckle flower, 5 to 8 parts of herba taraxaci, 10 to 15 parts of rhizoma atractylodis macrocephalae, 8 to 12 parts of poria cocos, 6 to 10 parts of rhizoma dioscoreae, 12 to 18 parts of radix astragali seu hedysari, 8 to 12 parts of radix bupleuri, 5 to 8 parts of liquorice root and 3 to 6 parts of semen ziziphi spinosae. Based on the traditional Chinese medicine theory of supporting healthy energy and giving consideration to both symptoms and root causes, a three-dimensional synergistic system of clearing heat, resisting bacteria, invigorating spleen, benefiting intestines, tonifying qi and resisting stress is constructed to adapt to the physiological characteristics of weaned piglets, so that the problems of low survival rate, slow growth and substandard quality in weaned piglet breeding are solved, and the survival rate of the weaned piglets is remarkably improved.

This invention discloses the application of a porcine-derived Bacillus in antioxidant activity, wherein the porcine-derived Bacillus is used to prepare antioxidant products. The porcine-derived Bacillus is Bacillus subtilis YB-X-721, classified as Bacillus subtilis, and was deposited at the China General Microbiological Culture Collection Center on November 10, 2023, with accession number CGMCC No. 28942. The fermentation supernatant, bacterial suspension, and cell-free extract of the porcine-derived Bacillus subtilis YB-X-721 of this invention all possess certain DPPH free radical, superoxide anion free radical, and hydroxyl free radical scavenging abilities, as well as a certain reducing ability, and can be used to prepare antioxidant products. Furthermore, when the porcine-derived Bacillus subtilis YB-X-721 of this invention is added to piglet feed as an animal feed additive, it can improve the growth performance of weaned piglets, significantly increasing average daily weight gain, and significantly reducing average daily feed intake, feed conversion ratio, and diarrhea rate.

The invention discloses a preparation method of portulaca oleracea polysaccharide. The preparation method comprises the following steps: S1, pretreating portulaca oleracea; s2, degreasing treatment; s3, extraction of crude purslane polysaccharide; s4, removal of alcohol soluble impurities; s5, removing pigments; s6, removal of protein; s7, removing small molecular impurities; and S8, separation and purification. The purslane polysaccharide extracted by the method disclosed by the invention is applied to preparation of a feed additive which has a growth promoting effect and / or a diarrhea preventing and treating effect on piglets. The extraction method provided by the invention can effectively improve the extraction efficiency of the active components, and ensures that the extract has relatively strong biological activity and protective effect. The portulaca oleracea polysaccharide disclosed by the invention has relatively strong water retention effect and thermal stability, good solubility and good adsorption effect, has a remarkable growth promoting effect on piglets, can be used for remarkably reducing the diarrhea rate of weaned piglets, and has a good application prospect in livestock breeding.

The invention discloses application of an aromatic hydrocarbon receptor stimulant in preparation of a medicine for treating diarrhea of weaned piglets and / or inhibiting inflammation, and belongs to the field of biological medicine. According to the present invention, with the PAS-B structural domain of the AHR as the target, the virtual screening technology, the target verification test and the weaned piglet diarrhea pharmacodynamic evaluation test are performed to determine the arctigenin as the AHR strong agonist and the anti-inflammatory drug, and the arctigenin has the good treatment effect on the weaned piglet diarrhea. Experimental results show that 10 mg / kg of arctigenin can significantly relieve diarrhea and hemafecia symptoms of weaned piglets, reduce the content of inflammatory factors in serum and intestinal tissues and improve the intestinal structure of weaned piglets, has no significant cytotoxicity, hepatorenal toxicity and intestinal epithelial cell growth inhibition effect, and can be used for preparing a feed additive for weaned piglets. The compound can be used for preparing medicines for treating diarrhea of weaned piglets. The invention provides a new raw material medicine for treating diarrhea of weaned piglets, and has great economic value and wide application prospect.

The invention provides application of D-mannose in preparation of a product for improving intestinal mucosa immunity and / or intestinal flora homeostasis of weaned piglets, and particularly belongs to the technical field of weaned piglet breeding. The invention provides application of D-mannose in preparation of a product for improving intestinal mucosal immunity and / or intestinal flora homeostasis of weaned piglets. The D-mannose is derived from a natural plant, can stably and efficiently improve intestinal mucosa immunity and intestinal flora homeostasis of the weaned piglets, relieves diarrhea, and improves the growth performance of the weaned piglets at the same time. Specifically, D-mannose can improve the growth performance of weaned piglets, reduce the diarrhea rate, improve the intestinal structure, enhance the chemical barrier function of the intestinal tract, reduce the abundance of harmful bacteria in the intestinal tract and increase the content of short-chain fatty acid producing bacteria.

The invention relates to the technical field of preparation of feed additives, in particular to a traditional Chinese medicine compound feed additive for preventing stress syndromes of early weaned piglets and a preparation method of the traditional Chinese medicine compound feed additive. The medicine specifically comprises the following components: rhizoma osmundae, astragalus membranaceus, mangnolia officinalis, hawthorn, medicated leaven, pericarpium citri reticulatae, polygala tenuifolia, Chinese pulsatilla root, cortex fraxini, poria cocos, liquorice and spina date seed. The traditional Chinese medicine compound feed additive provided by the invention has a remarkable technical effect in the aspect of preventing the early-stage weaned piglet stress syndrome. Through scientific compatibility of various traditional Chinese medicine components, the additive can effectively improve the digestive function of the weaned piglets, enhance the immunity, relieve the stress response and remarkably reduce the diarrhea rate and the death rate. Experimental results show that piglets using the additive are superior to a blank control group and other substitution groups in the aspects of weight gain, oxidation resistance, serum hormone level, immune globulin indexes and the like, and the additive is proved to have a comprehensive physiological regulation function.

The invention relates to the field of veterinary biological products, in particular to a porcine epidemic diarrhea virus attenuated strain and a vaccine and application thereof. The porcine epidemic diarrhea virus attenuated strain provided by the invention is obtained through in-vitro separation culture and continuous five rounds of plaque purification and screening technology, and has stable culture characteristics. Meanwhile, the virulence of the strain on newborn piglets and weaned piglets is remarkably reduced, and the virulence does not have the phenomenon of reversion after continuous passage for five times in a pig body. The strain has good immunogenicity, and mucosal immunity and systemic immune response of an organism can be activated at the same time by adopting an oral immunization mode. A neutralizing antibody of 1: 8-1: 16 can be detected in oral fluid and serum after the piglets are immunized for 14 days, and a large amount of sIgA is generated in milk after the pregnant sows are immunized, so that the piglets obtain effective passive immune protection.

The present application relates to a kind of fat powder for reducing weaning piglet dead rate and its preparation method and application, and the composite lipid in the preparation raw material of fat powder includes 1,3-di-oleic acid-2-palmitic acid triglyceride, 24 degrees palm oil, rice bran oil, coconut oil, linseed oil, caprylic triglyceride, capric acid triglyceride, alpha-lauric acid monoglyceride and tributyrin.The present application develops the fat acid composition close to pig milk fat structure, let piglet continue lactation period in weaning period to enable approach mainly with lipid, meet the compound energy demand of fast, medium and slow, avoid falling into energy potential difference;And the specific combination of medium and short chain fatty acids, both can improve the energy efficiency of weaning piglet, also have bacteriostatic disease characteristics, can improve the immunity of piglet, reduce the diarrhea rate.This composite lipid overcomes the problem such as piglet energy deficiency and indigestion caused by single raw material oil due to unsuitable lipid structure, can significantly reduce weaning stress, reduce the diarrhea rate and dead rate.

The invention relates to the technical field of feed additives, in particular to a traditional Chinese medicine composition for preventing and treating weaning stress of piglets as well as a preparation method and application of the traditional Chinese medicine composition. The traditional Chinese medicine composition comprises the following raw materials in parts by weight: 4-12 parts of acanthopanax, 3-9 parts of plantain herb, 3-9 parts of red peony root, 1-3 parts of elecampane and 1-3 parts of fructus aurantii. The traditional Chinese medicine composition can improve stress diarrhea caused by the fact that weaned piglets leave sows and do not adapt to new environments, and the stress reaction of the weaned piglets is relieved by taking the sedative and tranquillizing acanthopanax as a monarch drug; the herba plantaginis for dredging and regulating water channels is used as a ministerial drug to promote diuresis, expel toxins and improve viscera functions of piglets, and the radix paeoniae rubra is used as a ministerial drug to promote blood circulation, remove blood stasis and promote excretion of metabolites; the radix aucklandiae is used as an adjuvant drug, and the fructus aurantii is used as an envoy drug to promote qi and eliminate stagnation, promote gastrointestinal excretion of weaned piglets and improve gastrointestinal functions. Through scientific compatibility, the medicine effect can be synergistically enhanced, and the weaning stress reaction of piglets is relieved.

The invention relates to the technical field of microbial fermentation, in particular to a preparation method and application of a digestible biological protein fermentation material. According to the fermentation method, candida utilis serves as a fermentation strain, industrial and agricultural waste glucose mother liquor and corn steep liquor serve as substrates, high-yield mycoprotein is obtained under the relative low-temperature fermentation condition of 20-25 DEG C, and the obtained fermentation liquor is subjected to single enzymolysis, so that a fermentation material easier to digest is obtained. When weaned piglets are fed with the obtained fermented material, the diarrhea rate of the piglets can be effectively reduced.

The invention relates to a low-residual zinc complex feed additive and a preparation method and application thereof, and belongs to the technical field of feed additives. The zinc element in the feed additive exists in the form of a small peptide zinc complex, the chelating strength coefficient of the small peptide zinc complex is not lower than 850, and the zinc retention rate after the small peptide zinc complex is digested in simulated gastric juice for 2 hours is not lower than 95%. The preparation method comprises the following steps: carrying out enzymolysis on protein to obtain a small peptide solution, then carrying out complex reaction on the small peptide solution and zinc salt under the coupling condition of pulse ultrasound and gradient heating, and then carrying out dynamic pH refining and drying. Through a unique coupling technology, the problems that conventional organic zinc gastric juice is poor in stability and poor in effect under the low addition amount are solved, the prepared additive can achieve the anti-diarrhea effect equivalent to that of 1200-1600 mg / kg zinc oxide with the low addition amount of 300-600 mg / kg (in terms of zinc element) in daily ration of weaned piglets, meanwhile, the zinc discharge amount of excrement is reduced by 80% or above, and the production cost is reduced. Unification of efficient replacement and low residue is realized.

The invention discloses a pig feed containing nano-selenium and a preparation method of the pig feed. The pig feed is specifically prepared by mixing corn, soybean meal, fermented soybean meal, extruded soybeans, whey powder, an amino acid premix, calcium citrate, monocalcium phosphate, a vitamin premix, a trace element premix, compound enzymes, nano-selenium composite fibers, protein modified loaded nano-selenium and the like. The feed contains nano-selenium, is scientific in formula, meets the nutritional requirements of weaned piglets, and promotes the growth of the piglets.

The invention belongs to the technical field of animal nutrition and feed, discloses an application of a Fuzhuan tea extract in prevention of vomitoxin-caused piglet health injury, and particularly relates to an application of the Fuzhuan tea extract as a feed additive in prevention or improvement of piglet health injury. The feed additive can effectively reduce negative effects on weaned piglets caused by excessive vomitoxin in the feed, wherein the negative effects comprise growth performance reduction, diarrhea rate increase, intestinal morphology damage, intestinal cell proliferation inhibition, intestinal epithelial barrier injury, immune disorder, abnormal liver function and excessive oxidative stress and inflammatory response.

The invention discloses clostridium butyricum, a clostridium butyricum preparation for preventing and controlling African swine fever virus and application of the clostridium butyricum preparation, and belongs to the technical field of microorganisms. The clostridium butyricum JBH-KOLONIZER BD-10 serving as a fermentation strain is preserved in the China Center for Type Culture Collection, and the preservation number of the clostridium butyricum JBH-KOLONIZER BD-10 is CCTCC (China Center for Type Culture Collection) NO: M 20231636. The clostridium butyricum fermentation liquor disclosed by the invention has an obvious inhibition effect on the replication of the African swine fever virus. The clostridium butyricum is used as a fermentation strain to prepare the clostridium butyricum microbial preparation, and the clostridium butyricum microbial preparation is added into pig complete feed, so that African swine fever virus replication can be effectively inhibited, oxidative stress can be relieved, the non-specific antibody level of weaned piglets can be improved, and pig herd health can be promoted. In addition, the clostridium butyricum preparation is free of drug resistance and toxic and side effects after being applied to swinery and has the advantages of being low in cost, high in safety and environmentally friendly.

The invention provides a Chinese herbal medicine feed additive for preventing and treating diarrhea of livestock and poultry and a preparation method thereof, and relates to the field of feed additives, the Chinese herbal medicine feed additive is composed of dandelion, mahonia bealei, rhizoma alismatis, gordon euryale seed, gallnut, Chinese yam, perilla leaf, pinellia ternate, red garden burnet, galangal, indigo naturalis, shiny cinquefoil root and bidens pilosa. The Chinese herbal medicine feed additive disclosed by the invention has broad-spectrum bacteriostatic activity on common pathogenic bacteria of livestock and poultry, can be used for remarkably reducing the occurrence rate of diarrhea of weaned piglets, reducing the levels of TNF-alpha and IL-6 in serum and increasing the content of IgA and IgG, and has an anti-inflammatory immune regulation effect; meanwhile, the feed additive can improve the content of TP and ALB in serum of weaned piglets, reduce the content of BUN, reduce the activity of ALT and AST, regulate protein metabolism disorder and protect liver and kidney functions; besides, the additive can optimize the intestinal microecological balance of weaned piglets, effectively prevent and treat diarrhea, and provide a safe and efficient prevention and control strategy for the diarrhea problem of livestock and poultry in large-scale breeding.

This invention belongs to the technical field of livestock breeding equipment and discloses an intelligent feeding system and method for early-weaned piglets. The system includes: a feed silo unit for storing and automatically conveying milk replacer powder; a milk mixing station unit connected to the feed silo unit for receiving the powder and automatically mixing it with water at a controllable temperature to form liquid milk; a conveying pipeline unit connected to the outlet of the milk mixing station unit for conveying milk, the conveying pipeline unit including a circulation pipeline and a milk return control valve; and at least one end-feeding unit that supplies milk to the piglets through the conveying pipeline unit. The milk mixing station unit can circulate the milk at regular intervals through the circulation pipeline and the milk return control valve. This invention provides an intelligent feeding system and method for early-weaned piglets, which achieves automated feeding, greatly reducing manual labor; at the same time, it ensures controllable milk-to-water ratio and temperature during feeding, thereby improving the survival rate, health, and growth rate of piglets.

The invention relates to the technical field of breeding, in particular to a composition for relieving vomitoxin harm of weaned piglets and a preparation method and application of the composition. The composition is prepared from the following components in parts by weight: 50 to 70 parts of glucurolactone, 10 to 15 parts of cynarin, 20 to 40 parts of scutellaria baicalensis flavone, 10 to 20 parts of stevia rebaudiana extract and 80 to 120 parts of a carrier. The composition can be used for effectively relieving the symptoms of diarrhea, weight loss and intestinal dysfunction of weaned piglets.

A plant-derived composition having an essential oil core and a herbal powder is used to feed weaned piglets. PW piglets provided with a basal feed supplemented with these plant-derived compositions have improved growth performance. The essential oil core comprises three essential oils.

The invention discloses a daily ration composition for improving growth performance and health of weaned piglets and application of the daily ration composition. The daily ration composition is formed by adding dihydroquercetin into basic daily ration serving as a carrier of weaned piglets, and the dihydroquercetin is added into the basic daily ration according to the proportion of 100 mg / kg. According to the invention, 100 mg / kg of dihydroquercetin is accurately added into the daily ration of the weaned piglets, so that the average daily gain of the piglets can be remarkably increased, the feed-gain ratio and the diarrhea rate can be reduced, meanwhile, the antioxidant enzyme activity and the immune globulin content of serum can be increased, the morphological structure of intestinal tracts can be improved, and no adverse effect is caused to the liver, the kidney, the spleen and other organs of the piglets.

The invention discloses a detection device for a Chinese herbal medicine compound feed for weaned piglets, which relates to the technical field of feed detection. The device includes a box body, a feed moisture detector body and a circular cover. A hollow shaft is rotatably arranged on the box body, a movable shaft slidably arranged in the hollow shaft and a second extrusion spring arranged in the hollow shaft. A second gear is arranged at the bottom of the hollow shaft. A plurality of evaporation basins are arranged on a circular plate at the top of the movable shaft. An adjusting member is arranged in a circular cavity in the second gear. A feeding cylinder and a feeding pipe arranged at the bottom of the feeding cylinder are arranged on the box body. A blocking member is arranged in the feeding cylinder. A short shaft is rotatably arranged on the inner top surface of the box body. A driving member is arranged on the outer wall of the short shaft. A first gear is arranged at the bottom of the short shaft. An electric push rod is installed on the inner top surface of the box body. A transmission assembly is arranged at the telescopic end of the electric push rod. By using the transmission assembly, the invention first realizes the rotation of the evaporation basins, avoids the operator from taking the used evaporation basins, thereby avoiding the phenomenon that the operator is scalded, and further facilitates the protection of the operator.

The application belongs to the technical field of microorganisms, and particularly discloses a bacillus velezensis DZ-4-002 and application thereof. Bacillus velezensis The bacillus velezensis DZ-4-002 provided by the application has a Latin name of CGMCC No. 25955. The strain can not only produce a high yield of nitrite reductase, but also improve the growth performance of animals and the milk production performance of dairy cows. Within the experimental range of the application, the bacillus velezensis provided by the application can not only improve the egg production increase rate, average egg weight and feed utilization rate of laying hens, but also improve the average daily weight gain, average daily feed intake and feed utilization rate of weaned piglets, and the average milk yield, milk-feed ratio and lactose content in milk of dairy cows. The application has a good application prospect in the fields of nitrite degradation agents, feed and additives thereof.

The invention discloses a method for measuring the demand amount of amino acid under a low-protein daily ration, and a low-protein daily ration feed for weaned piglets obtained according to the method, the mass fraction of crude protein in the feed is less than or equal to 16.5%, and the mass ratio of standard ileum digestible histidine to standard ileum digestible lysine in the feed is 0.28-036. According to the invention, the demand amount of the histidine in the daily ration in the early and later periods of the weaned piglets is determined through a design test, and reference is provided for the preparation of the daily ration formula of the weaned piglets according to the demand amount data, so that the low-protein daily ration feed capable of meeting the growth requirements of the weaned piglets is obtained. By supplementing crystal histidine into the daily ration of the weaned piglets, the protein level of the daily ration can be further reduced to a certain extent, but the growth performance of the piglets is not influenced.

The invention belongs to the technical field of livestock and poultry feed additives, and particularly relates to application of a dogwood extract in preparation of a compound feed for relieving diarrhea and enteritis, and the dogwood extract is an aqueous extract of a dogwood medicinal material. 500mg-2000mg of the dogwood extract is added into each kilogram of the basal feed, so that the compound feed is obtained. The compound feed can relieve diarrhea and intestinal inflammation of weaned piglets, especially at the 21-35-day-old stage, the diarrhea occurrence rate of the weaned piglets can be remarkably reduced by 15% or above, meanwhile, the average daily gain is increased, the feed-gain ratio is reduced, the comprehensive growth performance is better than that of a control group, the level of pro-inflammatory cytokines in IPEC-J2 cells or intestinal mucosa tissues is remarkably reduced, and the weaned piglets are prevented from suffering from diarrhea and intestinal inflammation. Meanwhile, the level of anti-inflammatory cytokines is up-regulated, and excessive activation of an NF-kB key inflammatory signal channel can be inhibited.

The invention discloses application of a herba houttuyniae polysaccharide extract in a feed capable of improving intestinal health of piglets, the feed comprises the herba houttuyniae polysaccharide extract and a basic feed, and the application method of the herba houttuyniae polysaccharide extract comprises the following steps: adding the herba houttuyniae polysaccharide extract into the basic feed, and continuously feeding 21-28-day-old weaned piglets for 28 days, the intestinal flora structure of weaned piglets is adjusted through the houttuynia cordata polysaccharide extract, short-chain fatty acid secretion is promoted, and the intestinal morphology is improved, so that diarrhea prevention and intestinal health improvement are achieved; the herba houttuyniae polysaccharide extract is prepared from the following components in percentage by mass: 20 percent to 21.6 percent of herba houttuyniae polysaccharide, 5 percent to 10 percent of volatile oil, 25 percent to 35 percent of flavonoid, 10 percent to 15 percent of total amino acid, 3.1 percent to 6.1 percent of alkaloid, 3 percent to 10 percent of organic acid and 1.5 percent to 5.5 percent of sterol, and the herba houttuyniae polysaccharide is prepared from glucose, galactose, mannose, arabinose and xylose. The invention aims to improve the survival rate of early weaned piglets, shorten the breeding cycle of a farm and improve the reproductive performance.