116 results about "Pig farming" patented technology

The invention relates to livestock feeding technology, in particular to a making method of a biological fermentation bed for pig farming. Using the biological fermentation bed to farm pigs strictly sticks to the scientific process flow. Raw materials (such as sawdust and rice hull) and strain are mixed from top to bottom for three times and are picked for fermentation for about a week. Core temperature of padding reaches 60DEG C-85 DEG C and is kept for 3-5 days. Even pathogenic microbes included in the raw materials can be killed. As strongest pathogenic microbes survive tens of hours at most at 60 DEG C, healthy pigs entering the fermentation bed can grow more healthily.

The invention relates to a low-carbon environment-friendly micro-ecological fermentation bed pig farming technology which comprises the following steps of: 1) manufacturing of a pigsty; 2) manufacturing of a fermentation bed; and 3) management of the padding of the fermentation bed and the pigs. In the invention, the microbial fermentation bed farming technology is adopted for thoroughly solving the environmental pollution caused by livestock farming; and since the organic padding contains special beneficial microorganisms with equivalent activity, the manure excreta of the pigs can be quickly and effectively degraded and digested. Since the pigsty does not need to be flushed, the sewage for flushing the pigsty is avoided; and moreover, the padding of the fermentation bed is changed once in 1-3 years, and the replaced old padding is re-fermented to produce natural organic fertilizer, thereby preventing the waste from being discharged out of the pig farm and really achieving the aim of zero emission in pig farming.

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 a live pig farming method. The live pig farming method comprises the following steps of 1 pig house construction; 2 feeding management, wherein piggies are born, teeth and tails are cut, the piggies are injected with iron supplementing injections in 7 days, castrated after 12 days, injected with swine fever vaccines after 21 days and weaned to be fed with piggy feed, and the piggies are fed with conservation feed after being fed for 10 days, fed with piglet feed when the piggies are fed to be about 30 jin, fed with traditional Chinese medicine pig feed when the piggies about 70 jin until the piggies are fed to be about 200 jin and fed with fattening feed until the pigs grow to be about 250 jin; 3 feed management; 4 environmental management. According to the live pig farming method, through scientific control over the pig house size, feeding management, feed management and environmental management, it is guaranteed that the pig house environment can well adapt to live pig growth, and occurrence of swine diseases can be reduced; in addition, it can be guaranteed that feed nutrition is well absorbed by the pigs by reasonably mixing feed and adopting a Chinese herbal medicine feeding mode, and therefore rapid growth of the pigs is guaranteed.

The invention discloses a pig breeding fodder putting device. The device includes a mobile rack, a lifting device, a retractable arm of a retractable device and a fodder supplying box, wherein the top portion of the fodder supplying box is provided with a fodder feeding hopper internally provided with a rotating shaft stretching to the both ends in the vertical direction, and the outer wall of the rotating shaft is provided with two groups of stirring blades in a horizontally symmetrical mode; the inner top portion of the fodder supplying box is provided with a hopper-shaped cavity, a spiral rotating shaft extending upwards and downwards is arranged inside the hopper-shaped cavity, and clapboards are installed between the top portion of the hopper-shaped cavity and the bottom of the fodder feeding hopper; a first motor the top portion of which is in power connection with the extending end of the bottom of the rotating shaft is arranged in the middle in the clapboards, the bottom of the first motor is in power connection with the extending end of the top portion of the spiral rotating shaft, and through holes are symmetrically formed in the clapboards positioned on the left and right sides of the first motor; the top portion of each through hole is provided with a first hopper-shaped groove, the end, away from the first motor, of each through hole is provided with a sliding groove internally connected with a sliding block in a sliding cooperation mode, and the inner wall of the side, away from the corresponding through hole, of each sliding groove is provided with a pushing and pulling device.

The invention provides a healthy pig farming method including feeding newborn piglets with colostrum instead of feed; starting creep feeding after 5 to 6 days, placing creep feed, and increasing feed amount in graduality; weaning after 3 to 4 weeks, and feeding the piglets with conservation feed; feeding the piglets with growing feed when weights are larger than 30KG; feeding the piglets with fattening feed when the weights are larger than 50KG till being sending to the market. By means of the method, different feed configuration for the piglets according to different periods, so that the piglets can grow healthily, hormone hazards are avoided, and people can be safer and healthier to eat the pork.

The invention discloses a feed for weanling piglets and a preparation method of the feed, and belongs to the field of livestock / poultry feed process. The feed consists of an energy component composed of expanded wheat, whey powder, sucrose, milk powder, artificial milk and salad oil; a protein component composed of extruded bean cake, extruded soybean and fish meal, a mineral component composed of calcium dihydrogen phosphate and stone powder; additives and a feed premix. The feed has rich and balanced nutrition and can greatly improve the productivity of piglets. With the reasonable proportion of the raw materials in the composition, the feed can not only promote the growth of piglets at the sucking piglet stage, improve the immunity of piglets and reduce the incidence of diseases, but also increase the utilization rate of each nutrient, reduce the waste of nutrients and increase the economic benefit of pig farming. The feed containing extruded wheat as the major energy component can not only satisfy the nutritional requirements of weanling piglets and promote digestion and absorption of nutrients in piglets, but also reduce the feed cost and increase the farming income.

The present invention discloses a biological fermentation feed for accelerating pig growth and a preparation method thereof, and belongs to the field of animal feed preparation. The feed is prepared by mixing lactic acid bacteria, bacillus licheniformis and yeast the lactic acid bacteria, Bacillus and yeast, fermenting, granulating and coating. Mixed fermentation employs the following raw materials by weight: 30-60 parts of barley flour, 25-50 parts of sunflower seed cake, 15-30 parts o perilla cake meal, 10-20 parts of distillers, 5-10 parts of grass meal, 5-10 parts of vegetable leaves, 4.5-9 parts of peanut shell powder, 3.5-7 parts of fungus chaff, 1.5-3 parts of dregs and 0.5-1 part of salt. The feed provided by the present invention can accelerate the growth and fattening of pigs, improve fattening efficiency and feed conversion, guarantee healthy growth and weight gain of pigs, and maintain high economic benefit for live pig farming; and at the same time, the feed can improve the gastrointestinal function of live pig, reduce manure odor, and reduce environmental pollution and diseases.

An ecological pig farming method using microbial padding relates to the technical field of pig feeding and includes: providing each of a nursery pen and a fattening pen with a cement padded tank and a feeding and activity platform; mixing rice chaff, sawdust, wheat bran and pig manure or used padding proportionally, adding microbial solution, mixing prior to piling and covering, and placing microbes which breed and grow into the padding tanks of the pens; allowing sows to be fertilized and farrow in the nursery pen, and moving the sows to other nursery pens after 28 days of breastfeeding; allowing piglets to stay in the nursery pen to continue grow for about 32 days, and moving the piglets to the fattening pen for feeding for 90-105 days prior to marketing; and cleaning away the padding in the padded tank, using the padding as high-quality biological organic fertilizer to apply to fields. By the ecological pig farming method using microbial padding, pig farming environment can be improved, pollution can be reduced, physique of pigs can be enhanced, use of antibiotics is avoided, growth of the pigs is quickened, pork quality is improved, feeding cost is lowered, and pig farming benefit is increased.

The invention discloses a building three-dimensional pig farming system, and relates to the field of domestic livestock farming. The building three-dimensional pig farming system comprises at least one multistorey building, wherein the interior of every storey of the building is provided with an aisle, an elevator and a stairway; two sides of the aisle of every storey of the building are respectively provided with a plurality of piggeries; the interior of every storey of the building is provided with a feed pipe, a water pipe and a temperature adjusting device; each storey of the building is provided with an air outlet channel and an air outlet channel which communicate with the piggeries; air outlet channels of all storeys of the building are in communication; the ground of the piggeriesin each storey of the building is alternately provided with a plurality of ditch channels; each ditch channel is provided with a plurality of through holes; the ceiling of each storey of the buildingis alternately provided with a plurality of manure collection pipes; a plurality of through holes communicate with the plurality of the manure collection pipes arranged at a lower storey of the building; and the plurality of the manure collection pipes of every storey of the building converge to a main manure pipe arranged on the wall of the building, and communicate with a manure pond arranged atthe exterior of the building through the main manure pipe. The building three-dimensional pig farming system provided by the invention has the following advantages: the multistorey building is utilized to build a pig farm, so the utilization rate of a land is improved; meanwhile, large-scale management of the pig farm can be easily realized.

A method of treating food waste by fermenting a raw material comprising the food waste by means of a koji mold to obtain a liquid substance. The koji mold is a koji mold belonging to genus Aspergillus capable of producing citric acid. The liquid substance comprises a citric add produced by the koji mold and has a pH of 5.5 or less. The method enables food waste to be used for feed without the problems usually associated with pig farming techniques using garbage. Additionally, the method allows food wastes to be preserved for a long time without putrefaction. Also offered is a feed composition comprising a treated food waste.

The invention belongs to the technical field of agricultural livestock production and particularly relates to an intensive efficient pig-farming system comprising a pig house. One side of the inside of the pig house is provided with a floor heating plate, and the other side is provided with moving excrement grates; the pig house comprises a plurality of pens; one side of each moving excrement grate is provided with a feed trough. The intensive efficient pig-farming system is characterized in that the top of each feed trough is provided with a feed pipe connected with a conveying pipe; the conveying pipe is connected with the bottom of a stock bin; a conveying chain is disposed within the conveying pipe and wound to a driving sprocket and a driven sprocket. The intensive efficient pig-farming system has the advantages that fodder can be continually and automatically conveyed and given to pigs to allow the pigs to quickly fatten; in summer, water is saved, and cooling is effective; excrement and urine discharged by the pigs never dissipate foreign odors affecting the pig house environment and can be used to produce methane gas used for heating; the system is simple in structure, convenient to operate, time saving and labor saving, cost saving, and environment protective, convenient conditions are provided for the healthy growth of the pigs, and economic benefit is increased for farmers.

The invention provides an integrated farming sewage treatment apparatus. The treatment apparatus is specially used for treatment of waste biogas slurry obtained after biogas fermentation of cultivation sewage produced in pig farming. The apparatus is of a box type integrated structure; two sides of the apparatus are respectively provided with a sewage inlet and a purified water outlet; the top of the apparatus is provided with four inspection openings and one sludge extraction opening; a primary oxidation tank, a secondary oxidation tank, a secondary sedimentation tank, a sludge tank and a sand filtration disinfection tank are successively arranged in the apparatus, and the apparatus is equipped with aeration devices for respective aeration of the primary oxidation tank and the secondary oxidation tank; waste biogas slurry fermentation liquid enters into the apparatus from the sewage inlet, undergoes treatment by each part in the apparatus and is discharged from the purified water outlet when reaching discharge standards; sludge in the sludge tank is extracted from the sludge extraction opening at regular intervals by a worker.

The invention provides an efficient system for treating livestock waste, particularly waste from cattle or pig farming. The new facility and method employ special transfers of slurry streams through ASBR, SBR, and a unique pretreatment reactor, resulting in treated water, quality compost, and biogas.

The invention provides an environmentally-friendly dry odorless pig raising method and a pigsty thereof. A raising feed trough, a water drinking trough and a drain port are formed in the pigsty; the ground in the pigsty has gradient of 8 to 12 centimeters; and a dirt discharge port for excrement, urine and flushing is not formed in the pigsty. The invention also provides the method for raising pigs by using the pigsty. The method is convenient to clear the excrement in the pigsty by using spread padding, and the pigs drink plant extract blending solution. The environmentally-friendly dry odorless pig raising pigsty and the pig raising method are suitable for reforming a scale and intensive large-sized culturing farm and a traditional pig farm, in particular the reformation of the traditional pig farm; the reformed pig farm meets the environmentally-friendly standard; and the method has the advantages of no odor, zero emission, zero pollution, cost saving, strong disease resistance, high meat yield, delicious meat and high added value. Besides the pig raising income, the method can provide the pig excrement of the primary pollution source for an organic fertilizer plant to produce organic fertilizers so as to generate additional economic benefit.

The invention discloses a farming method capable of improving immunity of live pigs. The method comprises the steps of performing self-help feeding, water-drinking, immunization, disinfection, feeding and management according to conventional ways of a pig farm, and simultaneously adding 0.08% (weight / weight) of traditional Chinese medicine micro-ecological preparation into a basic ration for feeding. According to the farming method disclosed by the invention, the productivity of fattening pigs is significantly promoted, the content of immunoglobulin in serum and the concentration of a complement in the serum are simultaneously increased, and the immune function of the fattening pigs is improved.

The invention discloses an anti-feed additive for relieving the post-weaning stress of a piglet and a preparation method thereof and aims to solve the problems that the weanling stress is easy to occur after the piglet is artificially weaned; the nutrition dyspepsia results in diarrhea; the feed conversion rate and the immunity are reduced. Cinnamyl aldehyde, galangin, kaempferol and jateorhizine as components of the anti-feed additive are extracted from natural plants and not only can replace part of antibiotics of weaned piglet feed, but also have a good antibacterial effect after entering a piglet intestine, so that the intestinal micro-ecological balance can be maintained, the digestion and the absorption of intestinal nutrients are promoted, the body immune performance of the piglet is regulated, the growth and development levels of the piglet are improved, the post-weaning piglet diarrhea is reduced, and the post-weaning stress of the weaned piglet is effectively relived finally. Therefore, the economic benefits of the pig farming industry are improved.

The invention discloses a farming method of a nursery pig and relates to the field of pig farming. The farming method comprises the steps of pigpen condition management, clustering and training; feeding management and manure treatment, wherein the step of feeding management comprises the process of adding an intestinal modulator to a feed for feeding during feeding; and the step of manure treatment comprises the process of scattering an adsorbent modifier on the surface of manure in a gutter drain and a manure storage pool, cleaning a pigpen and uniformly spraying a deodorant on the floor of the pigpen. According to the planting method, through a series of comprehensive breeding management technologies, such as reducing emission of odor materials, such as sulfide and amide through a nutrition approach, reducing volatilization of the odor materials in pig manure by using the adsorbent modifier, and improving the air quality of the pigpen, the incidence rate of respiratory diseases of the nursery pig is reduced, meanwhile, the feed conversion rate is also improved and the daily gain is improved.

The invention discloses a process and facility for the treatment of livestock waste. The invention provides an efficient system for treating livestock waste, particularly waste from cattle or pig farming. The new facility and method employ special transfers of slurry streams through ASBR, SBR, and a unique pretreatment reactor, resulting in treated water, quality compost, and biogas.

The invention provides a feed additive for pregnant sows and belongs to the technical field of pig farming. The feed additive is prepared from such components in parts by weight as 10-20 parts of bamboo shaving, 10-20 parts of ramie, 10-20 parts of grassleaf sweelflag rhizome, 10-20 parts of purple perilla, 10-20 parts of baical skullcap root, 10-50 parts of Chinese taxillus twig, 5-10 parts of fructus amomi, 10-20 parts of Chinese mugwort leaf, 5-15 parts of bighead atractylodes rhizome, 10-30 parts of Chinese dodder seed, 5-10 parts of eucommia bark and 10-20 parts of teasel root. The feed additive is a pure Chinese medicinal medicine and blended with the feed for the pregnant sows, and therefore, the immune system of the pregnant sows can be effectively repaired, the immunocompetence of the sows can be improved, the endocrine function of the sows can be reconciled, and such sub-health statuses as low fever and anorexia in the gestation period can be reduced; the feed additive is capable of clearing away heat and toxic materials, remitting heat stress, promoting intestinal tract movement, improving the vitality of the intestinal tract, and preventing constipation; the feed additive is also capable of promoting the nutrition supply in utero, reducing embryo death and the like; besides, no adverse influence is performed on the health of the sows and the piggy.

The invention discloses a middle pig fattening feed and a preparation method thereof. The middle pig fattening feed is prepared from the following raw materials in parts by weight: 300-400 parts of flour, 250-350 parts of tapioca flour, 100-150 parts of water caltrop starch, 100-130 parts of furfural dreg, 70-80 parts of plasma protein powder, 80-90 parts of fish scale powder, 50-70 parts of pratia nummularia, 20-25 parts of pumpkin, 35-40 parts of bread flour, 8-9 parts of brown sugar, 3-4 parts of rose flower, 1-2 parts of citric acid, 7-8 parts of okra, 12-15 parts of garlic bolt, 4-6 parts of shredded platycodon grandiflorum, 12-14 parts of oil, 1-2 parts of wisteria, 1-2 parts of shrub althea flower, 5-7 parts of broad bean paste, 2-3 parts of plantain herb, 1-2 parts of lophatherum gracile, 2-3 parts of semen cassia, 1-2 parts of selfheal, 1-2 parts of acalypha australis, 7-8 parts of shell powder, 6-7 parts of almond powder, 15-30 parts of phagostimulant and a proper amount of water. The middle pig fattening feed is capable of effectively promoting the growth and weight increase of middle pigs, promoting meat growing, increasing the meat growing rate of middle pigs and shortening the fattening period of middle pigs; as a result, quick fattening of middle pigs is realized and the economic benefit of middle pig farming is increased.

The invention discloses a pig farming trough capable of being automatically cleaned. The pig farming trough comprises a shell. A base is fixedly connected with the bottom of the left side of the shell, a trough body is fixedly connected with the top of the base, through holes which are communicated with one another are formed in a side of the trough body and a side of a through hole, a lifting plate is movably connected with an inner cavity of the shell, and first motors are fixedly connected with two sides of the bottom of the inner cavity of the shell. The pig farming trough has the advantages that the pig farming trough is provided with the through holes, the lifting plate, the first motors, first threaded rods, a fixing plate, a threaded pipe, a second threaded rod, a first gear, another first motor, a second gear, a brush holder, bristles, a water tank and a water pump, accordingly, residues and waste inside the trough body can be timely and effectively cleared up, the probability of breeding and spreading of bacteria inside the trough body can be lowered to a great extent, the physical health of pigs can be guaranteed, the quality of the pigs can be improved, and huge economic benefits can be brought to pig farming enterprises.

The invention relates to the technical field of pig farming, and particularly discloses a breeding method for high yield breeding pigs. According to the breeding method, a group subculture breeding method combining opened breeding and closed breeding is adopted, Danxi landrace and landrace foundation groups as well as Yingxi landrace and landrace foundation groups, which are stable, are established by closed breeding, then cross-breeding is performed, YX44 lines which are high in yield of living piggies, good in reproductive performance and high in lean meat factors and growth speed are obtained as female parents, YX55 lines which are high in growth rate, high in lean meat factors and high in yield of living piggies are obtained as male parents, and a high-yield breeding group is established, so that the high yield breeding pigs are obtained. The high yield breeding pigs bred by the method are high in yield of piggies, good in reproductive performance, high in growth speed, high in lean meat factors, and simple and efficient in hybridizing manner.

The invention discloses a black pig free-ranging method which comprises the following steps: selecting a sunny slope with a forest as a pig farm, enclosing the pig farm with an iron fence, arranging a pig house outside the pig farm, arranging a door for the pig house for communication with the pig farm, and arranging feeding troughs and drinking troughs in both the pig farm and the pig house; selecting weaned, strong, unwounded and disease-free black piglets for free-ranging, and before the piglets are settled, comprehensively disinfecting and sterilizing the pig house and the pig farm; for free-ranged black pigs, driving the black pigs into the pig farm after the black pigs are fed with concentrated food every morning, throwing grass at least once and ensuring sufficient water in the drinking troughs in that period, and late in the afternoon, driving the black pigs back into the pig house, and throwing the concentrated food once; periodically cleaning, disinfecting and sterilizing the pig house and the pig farm, and periodically replacing bedding straws. According to the method, a free-ranging form is adopted, so that the black pigs are closer to the nature, the quality of pork is improved, and the requirements of people on the black pork are further better met.

The invention discloses a pAPN gene site-directed modified pig. The pAPN gene site-directed modified pig is obtained by a plurality of technologies, such as constructing a gene vector of porcine aminopeptidase N (pAPN) by adopting a method in genetic engineering and performing cell transfection. The pAPN gene site-directed modified pig is mainly applied in two aspects: 1, the infection of viral diarrhea and K88 of the pig is thoroughly eliminated from a genetic angle, the disease control cost of pig farming is reduced, the pollution to environment caused by pig farming is reduced, and a method for performing healthy cultivation and reducing the abuse of antibiotics is provided; 2, the gene site-directed modified pig is the trial test before researching the screening and clinic of the pathogenesis and related intervention and treatment of related diseases, such as human cancers.

The invention provides a circular pig house with nested intake passages and exhaust passages, comprising at least one cylindrical pig house building; each plane floor of each pig house building is radially divided into a plurality of symmetric pigpens by grilles; nested first and second passages are provided in the middle of each pig house building along its symmetric axis; the top end of each inner first passage is sealed, with the bottom end communicated with an air outlet of a corresponding intake device; the bottom end of each outer second passage is communicated with a pig feces collection device, with the top end communicated with outside air; a wall of each first passage serves as an inner wall of the corresponding second passage, the outer wall of each second passage serves as an inner wall of the corresponding pigpen, and each second passage is provided with a hole communicated with the corresponding pigpen; a ceiling of each pigpen is fitted with an intake fan; fresh air is draught in by the first passages, runs through a pipeline into the second passages and is fed into the pigpens by the intake fans, and fouling air in the pigpens is fed into the second passages via openings; excrement in the pigpens runs through the holes into the second passages and drops into the pig feces collection devices.

The invention relates the technical field of livestock farming and particularly relates to a domestic black pig centralized farming method. The method comprises the following steps: pig breed selection and processing; pig house preparation; breeding and management; and a stage when pigs are prepared for slaughtering. The method is low in cost, and is convenient for centralized management of black pigs. The black pigs grow fast and do not have many parasites. The pig house environment is good, and the pig house has not many pathogens. No diseases are found during black pig farming. The black pig meat has good fragrance after cooked, is highly nutrient, is rich in a plurality of trace elements, and contains Chinese medicine components.

The invention provides a pig farming wastewater treatment method based on biomembrane, comprising the steps of S1, conveying framing wastewater into a biogas digester for carrying out anaerobic fermentation; S2, collecting biogas slurry and residue from biogas fermentation, feeding them into a collection tank, and carrying out solid-liquid separation; S4, feeding the biogas slurry into a precipitating tank; S5, passing the biogas slurry through a wastewater photocatalytic water-bridge oxidation sloping plate; S6, removing phosphorus and nitrogen from an aeration conditioning tank; S7, feedingthe wastewater that is aerated and conditioned into artificial biomembrane primary-to-tertiary treating tanks. Different microbes are utilized to intensively degrade pollutants, thereby removing COD and BOD in the wastewater and removing nitrogen by denitrification. The artificial biomembrane is used as a core technique herein; a wastewater integrated treatment scheme with the treatment with threestages of artificial membrane cooperating with the related technical means, such as phosphorus removal and nitrogen removal is utilized; output is created based on input in wastewater treatment, andvalue can be created.

The invention discloses a method for quickly culturing activated sludge of live pig farming sewage. The method comprises the steps of microbial inoculum preparation, sewage dilution, addition of nutrient substances, microbial inoculum inoculation and aeration. The method has the advantages that the operation is very simple, the number of required devices is small, the cost is low, no pollution is caused, the efficiency is high, and the method is easy to implement. The live pig farming sewage is treated by using the enterobacter cloacae with the function microbial preservation number of CCTCC NO:M 2017219 and the pseudomonas stutzeri with the preservation number of CCTCC NO:M 2017218, heavy metals and antibiotics in the sewage are removed, a good environment is provided for the growth and propagation of beneficial bacteria in the activated sludge, the culture speed of the activated sludge is increased, and the initial inoculum dosage of the sludge in traditional activated sludge culture can be decreased by 50% or above.

The invention discloses a feed additive capable of promoting development of intestinal tracts of weaning piglets. The feed additive is prepared from the following components in parts by weight: 1 to 6 parts of prebiotics, 1 to 6 parts of probiotics and 1 to 5 parts of nucleotide. The feed additive has the advantages that by adopting the reasonable ratio of the prebiotics, the probiotics and the nucleotide, the development of the intestinal tracts of the weaning piglets is effectively improved, the immunity is enhanced, and the influence to the metabolism of the intestinal tracts by the piglet weaning stress is decreased; the diarrhea of the weaning piglet is decreased, the survival rate is improved, and the antibiotic can be replaced; the feed conversion rate is improved, the economic value is increased, and the like; the significant meaning is realized for the modern scientific, intensive and scaled pig farming production.