The reserve pig is the future of the pig farm. The growth management and disease control during the cultivation period play a crucial role in the production potential of the farm and even the performance of its lifetime production performance. It also determines the economic benefits of the farm. The root cause of commodity disease is in the population, and the source of the population disease is in the reserve pig group. It can be seen that the cultivation and health management of the reserve pig stage plays a decisive role in production. Therefore, we should attach great importance to production. The age of pigs selected and the principle of selection The initial selection of 50 kg of spare pigs began to be selected. Sows should be selected from a clear source, clear pedigree, comprehensive selection index, good body condition, well-proportioned, straight line, strong body, Tall, the hooves should be straight, do not choose to lie; nipples are well developed, evenly distributed, no milk, breast milk, milk, at least not less than 6 pairs, and at least 3 corresponding to the navel; genital development Good, no other visible disease. Boars should be selected for good body condition, well-proportioned, with a straight topline, open chest, strong hooves and legs, high physiology, no accumulation of urine for the prepuce, well-developed and well-distributed testicles, and no other visible diseases. The second choice should be eliminated in the course of feeding, management, and domestication. Obvious disease and thinness should be eliminated. If the laboratory tests are unqualified, they should also be eliminated so that they can achieve a healthy and good body condition before breeding. The choice of three breeding periods, if not estrus, is ineffective after drug treatment, and should be eliminated. If the reserve pigs are treated after 300 days of age, they are still not estrused. Feeding pigs are fed sows according to the characteristics of rapid growth and development in the later period of the pig, less than 100 kilograms of body weight, pigs in # 2 are free to feed, promote their bone development. 100 kg - 4 weeks before mating, 4 # pregnancy feed, 2.5 kg -2.8 kg per head. Control their weight gain, continue to promote bone growth and development, pull shelves, so that the bone is fully calcified. 2 weeks before mating - mating, 5 # Nursing feed 3 kg -3.3 kg per head. Short-term excellent feeding, increase the number of ovulation. The boar is less than 50 kg body weight, 1# piglet material is 2 kg -2.3 kg per head, more than 50 kg body weight 2 # pig material is 2.5 kg - 2.8 kg per head, after the sperm is used for breeding, 5# feeding material is used for each head 2.5 Kg - 2.8 kg. The management of replacement pigs for replacement pigs Before the transfer, 100 kg of body weight were grouped twice in size for reasonable feeding. Hygiene and training management hygiene is mainly based on cleaning. The stools are swept to the second half of the day on the afternoon of the day and washed out with water to ensure that the barns are dry. When training in the pigs, sprinkle a little feed in the first half of each column. Sprinkle the water behind and feed the pigs to the first half of the bed until each pig sleeps. For 3 consecutive days, fix each pig to feed, excrete, and sleep. . For the back boars, apply soap and brush once every 5 days to 7 days to enhance their health and increase their intimacy with people. The boars were educated at 6 months of age and observed for sexual maturity, semen quality, and species value. Temperature and humidity control pay attention to ventilation, insulation and cooling work, control the optimal temperature within the house is 18 °C, relative humidity 60% -70%. Drinking Water Management Water is the source of life, while the pig's feed intake and drinking water are proportional. The height of the drinker is 70 centimeters, the flow rate is 1.7 liters per minute, the water requirement is 10 liters to 20 liters per minute, and the drinking water equipment and pipes are frequently checked to ensure its normal drinking. Illumination time is 16 hours per day. The insufficient part can be obtained by artificial light, and can also be obtained by increasing outdoor sports. The activities of the reserve pigs are arranged once a day and they are rushed to the sports ground for exercise. If there is no condition, the pigs will be changed once a day. The gilts were estrus-managed and arranged to reach the boars after 150 days of age and contact the reserve pigs to promote their estrus. You can also throw linen bags with boar scent and urine into the column, and carefully observe and record the time and number of estruss per sow. Ten days and 15 days after the domestication of the domesticated feces of the reserve pig is selected, the feces is poured into the column once a day. The domestication of fetal clothing takes place 15 days to 20 days after the acclimation of domesticated feces. The placenta is broken every 3 days to 5 days and fed with water and spices. After contact with old sows at the end of 15 days to 20 days after the acclimatization of the tires, the old sows are rushed into the pens in direct contact with the reserve pigs according to the principle of 1:5 to 1:10. After the selection of the deworming and health care of the pigs, the pigs were fed with the #2 pig plus the medicine for 7 days, and 1 ml of ivermectin was injected subcutaneously for every 33 kg. Before the breeding, they were fed with 2 # pigs plus the drug for 7 days, and 1 ml of ivermectin was injected subcutaneously for every 33 kg of body weight. For excrement domesticated pigs, one in vitro spray was applied every 15 days. During the acclimation period, no antibiotics or antiviral drugs are added to prevent the killing of pathogenic microorganisms, but electrolytes, vitamins and immunomodulators are added to increase their resistance. For Chlamydia, in order to completely eliminate or inhibit latent infection prior to mating, the drug was administered continuously for 21 days at the therapeutic level. Tetracycline, oxytetracycline and chlortetracycline can all be used by drinking water or feed. Long-acting oxytetracycline is used to treat infected pigs. In principle, disinfection of spare pigs does not disinfect the pigs during domestication, but the surrounding environment should be disinfected. The pigs laboratory test was conducted for 150 days (ie, 30 days after inoculation of swine fever). Blood samples were sent to each individual for detection of swine fever antibodies and pseudorabies wild virus antibodies. Those who failed were eliminated, and those who passed were normal. Immunity range. Treatment plan: 1. Pigs with a piglet cutoff value (≤50) were beaten by swine fever and retested after 20 days. Those with unqualified antibodies were eliminated. 2. Pseudorabies wild-type antibody positive (S/P ≤ 0.9) pigs were eliminated. 3. Toxoplasma antibody positive (≥1:16) pigs were eliminated. Objectives of reserve pig management Pigs managed by reserve pigs Target estrus before mating at least 2 times, initial allocation age 230 days to 250 days, weight 130 kg, body length 120 cm, height 80 cm, bust 120 cm, back fat L6 mm to 18 mm. 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