91 results about "Replacement gilt" patented technology

The invention belongs to the technical field of a feed, in particular to a feed for replacement gilts, which comprises the following components by weight: 50% to 60% of corns, 8% to 18% of bran, 10% to 15% of bean pulp, 10% to 15% of extruded soybeans, 1% to 2% of mountain flour, 1% to 2% of calcium hydrophosphate, 0.3% to 0.7% of fine salt, 1% to 2% of soya-bean oil, 2% to 4% of fish meal, 0.1% to 0.2% of sow multi-vitamin, 0.1% to 0.2% of sow polymineral, 0.5% to 1.5% of herbal medicines, 0.2% to 0.5% of amino acid and 0.5% to 1% of natural additive. Compared with the prior art, according to the feed for the replacement gilts, a formula of the replacement gilts is optimized, and the herbal medicines are reasonably added in the formula so as to promote the sows to heat, improve immunity and increase the ovulation quantity of the sows, so that multiple fetus and the birth number of the replacement gilts are improved, the heat and the ingravidation between the fetuses are shortened, the lifetime use ratio of the replacement gilts is improved, and the economical value of the pig farms is greatly elevated.

The invention discloses a feeding method of pigs, and particularly discloses a feeding management method of sows. The feeding management method of the sows comprises the step of feeding management on four stages of replacement gilts, non-pregnant and breeding sows, pregnant sows and farrowing and lactation sows. The protein level of the sows keeps 16%; the feeding amount is increased or decreased in time according to the weights of the replacement gilts; every 4-6 non-pregnant and breeding sows stay in one sty to be fed, and the sows are bred in time; the feeding amount of the pregnant sows is adjusted according to the early pregnancy stage, the middle pregnancy stage and the later pregnancy stage, namely the weights of the sows; delivery rooms, delivery beds and the sties are sterilized before the sows farrow, and the feeding amount is increased or decreased in time after the sows farrow, namely in the lactation period. The sows fed according to the feeding management method of the sows are good in health, high in pregnancy rate and large in born number, piglets are strong and uniform, and economic benefits can be improved.

The invention discloses a method for increasing the oestrus breeding rate of replacement gilts. The method includes the steps of breeding gilt selection, nutrient matching, feed mildewing, illumination control, temperature, humidity and ventilation control, and replacement gilt raising. In the method, vaccine immunity and drug health care should be performed; green fodder should be provided; driving movement, swinery changing, swinery combination and vehicle carrying movement should be performed; oestrus inducing should be performed; recording and short-time high-quality raising should be performed; breeding age in days and weight should be reasonable; concentrated oestrus breeding should be performed. Hormone oestrus promotion, Chinese herbal medicine oestrus promotion, starvation treatment and brown sugar oestrus promotion are performed on the anestrus replacement gilts. According to the invested cost of the method, 5166 replacement gilts are purchased this year, PG 600 needs to be used for 20% of the replacement gilts for oestrus promotion, the cost of the PG 600 used for each replacement gilt is 43 RMB, and the drug cost is 44427.60 RMB; according to the output value, after conventional treatment measures and oestrus promotion of PG 600, the oestrus breeding rate reaches 94.12%. 5166 replacement gilts are introduced, and supposing that the overall oestrus breeding rate is 93%, the standard oestrus breeding rate of the replacement gilts is 90%; the anestrus replacement gilts are sold, and supposing that each replacement gilt is 130 kg and each kg of the replacement gilts is 12 RMB, 411213.60 RMB of loss is reduced.

The invention provides an efficient heat detection and synchronous fertilization method of replacement gilts and multiparous sows. The method has the advantages that mating of the multiparous sows and that of the added replacement gilts can be synchronized to allow batch management for sow's production; utilization and mating productivity of sows can also be increased; non-productive days for sows are fewer; work efficiency of mating staff can be improved; the purpose of all in and all out is easily obtainable, and sows can be imparted same reproductive statuses, health statuses and immune statuses.

The invention belongs to the field of pig feed and discloses feed of replacement gilts during the perinatal period. The feed is characterized by comprising the following components in parts by weight: 55-60 parts of corns, 20-24 parts of soybean meal, 5.5-6.9 parts of DDGS, 1.3-2.2 parts of wheat bran, 5-10 parts of full-fat rice bran, 0.7-1.2 parts of soybean oil, 1-1.3 parts of imported fish meal, 0.9-1.1 parts of calcium powder, 1.0-1.2 parts of calcium hydrogen phosphate, 0.2-0.5 part of lysine sulfate, 0.4-0.5 part of edible salt, 0.1-0.2 part of choline chloride, 0.2-0.3 part of a vitamin premix, 0.2-0.3 part of a microelement premix and 0.05-0.06 part of a mould inhibiter premix. The feed can be used for promoting physical growth of the replacement gilts, alleviating the primiparous stress of the replacement gilts, improving the food intake of the replacement gilts in the early stage of lactation period, and enhancing the disease resistance of the replacement gilts during the perinatal period.

The invention relates to compound feed for promoting onset of estrus of replacement gilts. According to the technical scheme, the compound feed is prepared from raw materials in percentage by weight as follows: 5%-20% of wheat bran, 25%-55% of corn, 1%-15% of corn gluten, 1%-10% of corn DDGS (distillers dried grains with solubles), 5%-35% of glucose, 3%-15% of soybean meal, 1%-2% of stone powder, 1%-2% of calcium hydrophosphate, 0.1%-3% of corn oil, 0.1%-0.5% of table salt, 0.1%-0.3% of amino acid, 0.2%-0.6% of compound trace elements and 0.3%-0.4% of multivitamins. The compound feed is applied to promotion of onset of estrus of the replacement gilts, can effectively regulate and control secretion of insulin, glucagon and progesterone, shorten the age of puberty of the replacement gilts, increase the feed intake of the replacement gilts and increase the number born alive and the litter weight of gilts, and has important significance in improving productivity of the gilts.

The invention relates to a feed, and in particular relates to replacement gilt feed containing traditional Chinese medicinal components. The feed is prepared from the following raw materials in parts by weight: 60-70 parts of corn, 12-15 parts of fried soybean flour, 8-10 parts of peanut straw, 12-15 parts of soya bean meal, 12-15 parts of dried brewer grain, 12-15 parts of rapeseed cake, 2-3 parts of egg shell powder, 4-5 parts of duckweed dried powder, 5-6 parts of dried pawpaw, 4-5 parts of dried loofah sponge, 3-4 parts of small dried crucian, 2-3 parts of fish bone powder, 2-3 parts of traditional Chinese medicinal additives, a proper amount of edible salt and 4-5 parts of phagostimulant. The feed is rich in raw material types, and can meet the requirement for normal growth of gilt; the pure natural traditional Chinese medicinal additive not only contains multiple trace elements, but also contains rich active substances, so that the development of the reproductive system can be promoted, sexual maturity of gilt can be accelerated, the estrous cycle can be shortened, the body shape of gilt is normal and does not have the phenomenon of over-fertilization, and an excellent base is provided to subsequent multiplication, and all raw materials are pure natural green raw materials and do not have adverse influence to gilt.

The invention provides a concentrated feed for replacement gilt. The concentrated feed is prepared and processed from protein feed, microelement premix, vitamin premix, compound enzyme, phagostimulant and feed poison adsorbent. The formula of the concentrated feed comprises the following components in percentage by weight: 72.00% of 46% bean pulp, 4.50% of steck power, 10.00% of rapeseed meal, 3.80% of calcium hydrophosphate, 4.20% of mountain flour, 1.50% of salt, 3.00% of replacement gilt specific core material, 0.50% of exfoliative toxin and 0.50% of soybean oil. According to the concentrated feed for the replacement gilt, the content of various amino acids, poly-vitamin, poly-mineral, calcium and phosphorus completely meet the growth requirement of animals, the toxin is absorbed by the exfoliative toxin, the damage to the replacement gilt is reduced, the concentrated feed is designed for the free-ranging households in rural areas, the concentrated feed is used for supplying the required nutrients to the replacement gilt, the health level of the replacement gilt is improved, and the breeding efficiency and the service life are guaranteed, so that the highest benefit can be created for the free-ranging households.

The invention discloses a preparation method of a Chinese herbal medicine additive for a replacement gilt feed. The Chinese herbal medicine additive is composed of honeysuckle, radix isatidis, male fern rhizome, semen allii tuberose, herba epimedii, prepared rhizome of rehmannia, medicated leaven, leonurus, fried cowherb seed, astragalus membranaceus, angelica sinensis and liquorice. The preparation method comprises the following steps: crushing the Chinese herbal medicines above, weighing, soaking with water, boiling with strong fire, holding the temperature for 30-60 minutes with slow fire, cooling, filtering through eight layers of gauze, collecting the filtrate, adding white sugar, fermenting in the presence of lactobacillus, saccharomycetes and acetobacter xylinum to obtain fermentation broth, mixing corn, bran and bean pulp in the obtained fermentation broth, and directly feeding replacement gilts with the Chinese herbal medicine additive. The Chinese herbal medicine additive can promote the growth and reproduction of effective microbial communities in the intestinal tracts of bodies, is beneficial to the digestive absorption and the utilization rate of nutrition, and can promote the healthy growth of the replacement gilts, and can effectively control the phenomena of frequent diseases, overweight or underweight, failure in observe oestrus and the like of the gilts. The active ingredients of the Chinese herbal medicines in the additive are multiplied after the microbial fermentation, thus the efficacy is improved; and the additive is natural, green and residue-free.

The invention discloses a breeding method for replacement gilts. The method comprises the steps that excellent gilts are selected from 70-day-age piglet groups of filial generation of landrace boars and Dahe black pig sows to be reserved for serving as the replacement gilts; the excellent gilts are bred in four stages according to the characteristics of the physiological properties and the nutritional requirements of the replacement gilts in each stage, daily ration is specifically prepared from special feed raw materials and Chinese herbal medicine additives in each stage to promote growing development and oestrus ovulation of the replacement gilts, and the optimal hybridization characteristics of the replacement gilts are obtained by adopting a self-help feeding mode and a restrict feeding mode; replacement gilt groups are screened and optimized for three times in the breeding stage, and the gilts of which growing development and immune antibodies are not in accordance with the breeding standards. According to the replacement gilts bred through the method, the breeding qualified rate reaches 90 percent, the conception rate of first farrowing sows reaches 90 percent and is increased by 4-5 percent points compared with a common breeding method, the live born number per litter is increased by 1, and the better economic benefit and social benefit are achieved.

The invention provides a sow aphrodisiac material, which is characterized by comprising the following components in part by weight: 0.5 to 1.5 parts of pearl barley, 0.5 to 1.5 parts of epimedium herb, 0.5 to 1.5 parts of herba lycopi, 0.5 to 1.5 parts of tuber fleeceflower stem, 0.5 to 1.5 parts of officinal magnolia bark, 0.5 to 1.5 parts of cassia bark, 0.5 to 1.5 parts of tangerine peel, 0.5 to 1.5 parts of cyrtomium rhizome, 0.5 to 1.5 parts of indigowoad leaf, 0.5 to 1.5 parts of perilla stem and 0.5 to 1.0 part of adhesive. The sow aphrodisiac material has the advantages of meeting the normal physiological requirements, guaranteeing that replacement gilts and multiparous sows can successfully enter the next reproductive cycle, improving the production performance of the sows, meeting the requirements of large-scale swine production, implementing an idea that prevention is more important than treatment, reducing medicament cost and integrally improving benefit of swine production.

The invention relates to concentrated feed for improving the replacement gilt oestrous rate. The concentrated feed is prepared from, by weight, 65-75 parts of bean pulp, 5-10 parts of corn gluten meal, 2-4 parts of fish meal, 5-10 parts of peanut meal, 0.5-1.5 parts of soybean oil, 1.5-3 parts of diaminocaproic acid, 1.5-3 parts of calcium hydrophosphate, 3-5 parts of mountain flour, 1-2 parts of salt, 2-3 parts of nucleus material, 0.1-0.3 part of complex phosphoesterasum, 0.1-0.2 part of antioxidant, 0.2-0.4 part of novasil and 1-2 parts of medicinal herb preparation. By feeding replacement gilts with the concentrated feed, the physique of the replacement gilts can be enhanced, and the oestrous rate and the litter size can be increased.

The invention discloses a special feed for replacement gilt. The feed comprises the following raw materials: corn, sunflower discs, corn dried distillers grains, wheat, bean pulp, rapeseed dregs, bran, fish meal, silkworm chrysalis meal, insect powder, soybean meal, premix, lysine, methionine, tryptophan, threonine, natural glycine betaine, calcium hydrophosphate, a red dates extract, silkworm breeding residual mulberry powder, grape pomace meal, soybean leaf powder, mushroom residues, apple leaf powder, the fruit of Chinese wolfberry, peach kernel powder, salt, hawthorn kernel powder and tea residue powder. According to the special feed for replacement gilt, which is disclosed by the invention, multiple low-price raw materials are adopted, the production cost is saved, the feed conversion ratio, fertilization rate of the replacement gilt and embryo survival rate are increased, and economic benefits of pig industry are improved.

The invention discloses a method for increasing the oestrus breeding rate of replacement gilts. The method includes the steps that first, replacement gilts are selected; second, illumination is improved; third, the replacement gilts are fed with green fodder, wherein each replacement gilt is fed with 0.5 kg to 1 kg of green fodder every day; fourth, large swinery raising is performed, and the replacement gilts are made to move appropriately, wherein the replacement gilts are raised in a large swinery; fifth, oestrus promotion should be performed properly in time; complete archive management should be performed. Due to the measures of improving the illumination, feeding the replacement gilts with green fodder and building detailed replacement gilt archive cards, the replacement gilts can be managed better, and the oestrus breeding rate of the replacement gilts is effectively increased. The oestrus breeding rate of the replacement gilts is gradually increased from 81.55% to 92.17% and from 92.17% to 95.19% and increased by nearly 14%, and direct economic loss caused when the replacement gilts are low in the oestrus breeding rate and are finally eliminated is reduced.

The invention relates to a field of livestock breeding technology, more specifically relates to a replacement gilt forage, which is prepared by the following raw materials by weight: 75-80 parts of corn, 12-15 parts of barley protein powder, 15-18 parts of black wheat bran, 12-15 parts of brown rice powder, 10-12 parts of peanut straws, 10-12 parts of extra dry white wine vinasse, 10-12 parts of millet bran, 3-4 parts of pig pancreas powder, 2-3 parts of fish meal, 2-3 parts of calcium hydrogen phosphate, 5-6 parts of walnut kernels, 6-8 parts of dried purple potato, 4-5 parts of cooked goose eggs, 6-8 parts of orange peels, 8-10 parts of peanut seedlings, 6-8 parts of chicory leaves, 8-10 parts of dried sweet potato seedlings, a proper amount of salts, and 4-5 parts of feeding promoting agents. According to the invention, the prepared pig forage has the has comprehensive balanced nutrition, and pig pancreas powder, walnut kernel, purple potato and other raw materials have zinc, selenium, vitamin E and other nutrition components which can promote pig growth, improve reproductive performance, and promote reproductive growth of sow, thereby the sow has early estrus and shortened oestrus cycle with strong physique and vigorous breeding capability.

The invention relates to feed additives capable of improving heat behaviors of replacement gilts. The feed additives comprise soy isoflavone, pueraria extracts, dye genistein, fructose and glucose. The feed additives are reasonable and innovative in formula and conform to growth, development and physiological characteristics of the replacement gilts; after application of the feed additives, silent heat rate of the replacement gilts is remarkably declined, the heat behaviors are improved, and breeding rate of the replacement gilts is increased while cost is low and the feed additives comply with actual production of a pig farm.

The invention provides a replacement gilt mixture capable of increasing breeding rate and a preparation method thereof and relates to the field of feed. The replacement gilt mixture is composed of, by weight, 31-56 parts of corn, 11-26 parts of husked barley, 3-15 parts of bran, 2-8 parts of NO.3 powder, 0.01-0.1 part of flavone, 0.01-0.05 part of curcumin and 0.02-0.07 part of probiotic. The replacement gilt mixture can effectively increase rate of utilizing feed nutritional ingredients by sows, can improve growing performance, nutritional substance digestion rate and intestinal health of the sows and can increase ovulation and farrowing number and improve reproductive performance of the sows.

The invention discloses biological fodder for promoting replacement gilt heat start, a preparation method and application. The biological fodder is prepared by mixing fermented soybean meal, fermented wheat bran and Chinese herbal medicines (herba epimedii, actinolite, prepared rehmannia root, coix seed, cowherb seed, dangshen, the root of red-rooted salvia and astragalus membranaceus) according to a ratio. The materials in the biological fodder have the weight proportion range that the fermented soybean meal accounts for 60 percent to 70 percent, the fermented wheat bran accounts for 20 percent to 30 percent, and the Chinese herbal medicines account for 10 percent, wherein the Chinese herbal medicines have the weight proportion range that the herba epimedii accounts for 1.0 percent to 1.8 percent, the actinolite accounts for 1.0 percent to 1.5 percent, the prepared rehmannia root accounts for 1.0 percent to 1.5 percent, the coix seed accounts for 1.0 percent to 1.2 percent, the cowherb seed accounts for 1.2 percent to 1.4 percent, the dangshen accounts for 1.2 percent to 1.5 percent, the root of red-rooted salvia accounts for 1.2 percent to 1.5 percent and the astragalus membranaceus accounts for 1.2 percent to 2.0 percent; the Chinese herbal medicines are prepared by picking, cleaning, drying, superfine grinding and mixing. The biological fodder is high in product safety degree, is added into a complete compound feed recipe according to a ratio of 15 to 20 percent, and can obviously promote the replacement gilt heat start, increase a replacement gilt estrus rate and reduce the replacement gilt cultivating cost.

The invention discloses a replacement gilt weight estimation method. The method comprises the steps of acquiring morphological index data of a replacement gilt, wherein the morphological index data comprise a chest circumference, a day age, a P2 point backfat thickness, a body length, a hip height and a leg width, a step of calculating the weight of the replacement gilt by using a constructed regression equation for estimating the weight of the replacement gilt, wherein the regression equation is as follows the body weight = -140.659 + 1.298 * chest circumference - 0.019 * day age - 0.034 * P2point backfat thickness + 0.408 * body length + 0.285 * hip height + 1.220 * leg width, R2 of the regression equation is equal to 0.929, and P is smaller than 0.001. According to the scheme, the bodyweight of the replacement gilt can be accurately estimated through the mutual combination of the morphological index data and the regression equation.

The invention discloses a compound feed for replacement gilts and a preparation method thereof and relates to the technical field of animal foods. The compound feed is used for improving the technical problems that the reproductive performance of the replacement gilts is easily influenced by unreasonable collocation of ingredients in an existing feed. The compound feed for the replacement gilts comprises a bulk ingredient, a premix compound and an additive; fermented distillers' solubles and biofermentation feed in the bulk ingredient are rich in degraded micromolecular nutrition as well as digestive enzyme, probiotics, antimicrobial peptide and lactic acid and can be compounded with other ingredients, so that the feed has relatively good healthcare effect and palatability and is capable of preventing constipation; furthermore, the bulk ingredient also adopts byproducts, namely soya bean meal and manioc waste of food processing, so that not only can the problem of byproduct processing be solved, but also reutilization of resources is realized, and furthermore, the material cost is lowered. The compound feed for the replacement gilt is free from drug residues and antibiotics, is a green and safe product, and is capable of effectively lowering the mortality rate of the replacement gilts. The preparation method is mainly applied to production and preparation of the compound feed for the replacement gilts.

The invention relates to a replacement gilt feeding management method capable of improving the production performance of a sow. The replacement gilt feeding management method is cooperatively implemented from aspects like isolation of a replacement gilt herd, taming, disease prevention and control, breed selection, housing environment control, feeding management and boar stimulation and estrus induction, significantly reduces the mortality risks of an introduced pig herd and a farm original pig herd, and improves the health degree of the pig herd, so the production performance of a reproductive sow is improved. The method provided by the invention comprises the following steps: 1) isolation; 2) taming; 3) replacement gilt selection; and 4) feeding management after the pig herd enters a replacement gilt house.

The invention discloses a concentrated feed for improving breeding effect of replacement gilts and a preparation method of the concentrated feed. The concentrated feed mainly comprises expanded soybean, fish flour, wheat middling, soybean oil, mountain flour, salt, lysine, methionine, magnesium sulfate, phytase 5000, a composite zymin, a mycete adsorbent, a flavouring agent, virginiamycin, breeding Kang, fatty powder, multi vitamin, multi mine, a carrier and other microelements. By utilizing the concentrated feed, nutritional status of the replacement gilts is strengthened, healthy growth of the replacement gilts is ensured, sexual maturity and body maturity are ensured when the replacement gilts are firstly mated, sufficient lean meat and fat are deposited in the body, and good reproductive performance is maintained in the following plurality of fetal times.

The invention discloses a compound premix additive for improving bone development of replacement gilts. The compound premix additive is prepared from, by weight, 30-40 parts of vitamin complex, 40-60 parts of trace element composite, 30-40 parts of choline chloride, 40-60 parts of L-lysine hydrochloride, 10-15 parts of DL-methionine, 5-10 parts of L-threonine, 120-150 parts of calcium hydrophosphate, 120-150 parts of monocalcium phosphate, 250-280 parts of limestone powder, 90-110 parts of salt and 85-265 parts of bran. By adoption of the compound premix additive, bone toughness and strength of the replacement gilts can be improved, reserve quantity of nutrients such as vitamins, trace elements and the like in the replacement gilts is increased, and accordingly occurrence rate of the foot-and-leg disease of the gilts is decreased, health of feet and legs of the gilts is protected, and lives of the gilts are prolonged.

The invention discloses a nutritional feed additive capable of improving litter size of a replacement gilt. The additive comprises the following components in parts by weight: 5-25 parts of vitamin D3, 5-25 parts of beta-carotene, 10-30 parts of vitamin E and 5-10 parts of organic selenium. The nutritional feed additive disclosed by the invention can immediately start puberty of the replacement gilt and improve the estrus rate and conception rate of the replacement gilt, so as to improve the survival litter size, thereby finally lowering the cost for the breeding pig farm and improving the productivity effect.

The invention discloses vitamin-containing premixed feed for replacement gilts. The vitamin-containing premixed feed comprises vitamin A, vitamin D3, 25-hydroxyvitamin D3, vitamin E, vitamin K3, vitamin B1, vitamin B2, vitamin B6, vitamin B12, nicotinamide, D-pantothenic acid, folic acid, D-biotin, vitamin C, an antioxidant and rice hull powder. With the adoption of the vitamin-containing premixed feed for the replacement gilts, special vitamin nutrition requirements of the replacement gilts can be met sufficiently, the health level of the replacement gilts is enhanced, the optimal physiogenesis level of the replacement gilts is adjusted, regular oestrus of the replacement gilts is guaranteed, and foundation is established for later production performance and utilization years.

The invention discloses a breeding method for replacement gilts obtained after long x big and big x long binary hybridization. According to the method, four key control points in the breeding processof the replacement gilts are mainly involved and comprise the best mating day age, adaptive weight, an estrus induction method (stimulation on boars) for the replacement gilts and the time length anddaily ration protein / lysine standards for the replacement gilts; if mating is too late, not only is the breeding cost high, but also the breeding performance of the replacement gilts in the whole life can be influenced; the mating replacement gilts the weight of which is lower than the adaptive weight give birth to few live piglets in the first farrow and are easily eliminated prematurely; the problem of difficult estrus of the replacement gilts is solved, and meanwhile the working efficiency of personnel is greatly improved; a nutrient regulation method is adopted for controlling the weightof the replacement gilts in the most suitable stage at the best mating day age and in the best estrus cycle under the free foraging condition. The breeding method can fully exert the production potential of the replacement gilts in the whole life and can also prevent the gilts from premature elimination.

The invention provides a method for inducing estrus synchronization of replacement gilts, and belongs to the field of animal estrus induction and artificial insemination. The method for inducing estrus synchronization of the replacement gilts is provided, aiming at the problem that estrus of the replacement gilts cannot be synchronous. The replacement gilts are feed with altrenogest within the given time, and combined with intravenous injection of eCG and hCG in the fixed time, so that the replacement gilts can be oestrous synchronously in the preset time. The method is beneficial for large-scale production of gilts.

The invention discloses a breeding method for improving the estrus rate of an American-series large white replacement gilt, and belongs to the technical field of sow breeding methods. The oestrus of the American-series large white replacement gilt is stimulated in time by means of optimizing the feed formula and injecting hormones at the reasonable periods at the four different stages of 4-6-month stage, 6-7-month stage, 7-9-month stage, and 9-10-month stage, so that the estrus rate of the American-series large white replacement gilt is improved.

The invention provides premix for improving reproductive performance of replacement gilts, and belongs to the technical field of replacement gilt feed. The premix contains 1-1.5 parts of dicalcium phosphate, 0.8-1.2 parts of stone powder, 0.2-0.7 parts of edible salt, 0.005-0.015 parts of phytase, 0.05-0.15 parts of choline chloride, 0.05-0.15 parts of betaine, 0.1-0.3 parts of potassium butyrate,0.02-0.07 parts of thermostable yeast, 0.05-0.1 parts of multivitamins, 0.01-0.05 parts of organic ore and 0.3-0.7 parts of a carrier. The invention also provides complete feed prepared from the premix. The complete feed contains 50-70 parts of corn, 15-20 parts of soybean meal, 15-20 parts of wheat bran, 1-3 parts of soybean oil and 3-5 parts of the premix. The premix can improve the estrus rateand reduce limb hoof diseases of the replacement gilts under the condition of scale and intensification, and the intestinal health level and reproductive performance of the gilts are improved.