The slaughter rate of piglets directly reflects the reproductive ability of sows, and also determines the economic benefit of a farm. Therefore, to improve the economic efficiency of farms, first of all, it is necessary to increase the slaughter rate of piglets. According to the farm's production practices, the following measures are summarized: Choosing good breeds In general, in purebred lean-type pigs, the fertility of landrace sows and Yorkshire sows is significantly higher than that of Duroc, and hybrid mother species such as The sow's reproductive ability is also significantly higher than that of the pure sow, especially when the hybrid sow is used as the female parent and the Duroc boar is the final male parent to produce the commercial pig, the fertility will be significantly higher than that of the pure sow. Fan. Strengthen the management of boar feeding for boar species, boar feed special requirements of the strain, to strengthen the boar movement, pig sperm detection. The condition of the sow should be moderate, not too thin or too fat, otherwise it will affect the conception rate and the number of litters. Reserve sows and male boars should be injected with parvovirus inactivated vaccine, Japanese meningitis B vaccine, and pseudorabies vaccine before mating to prevent the production of weak piglets, mummies, and stillbirths. Strengthen the feeding and management of pregnant sows, and do a good job of health care. One month before delivery, you should inject the necessary vaccines and do a good job of deworming according to the actual situation to protect the growth of piglets and reduce the occurrence of stillbirth, weak and malformed fetuses, and ensure healthy output. Strong piglets. The appropriate mating age for gilts and boars is 8 months. Sows weigh 110 kg and boars 120 kg. In the second estrus breeding, the gilts were significantly older than the first estrus. According to the experiment, gilts could increase the number of litters before supplementation (2 weeks before estrus). Sows of different ages have very different estrus times. Therefore, timely mating should be based on the age of the sows. “Older and earlier, less late, and less oldâ€. In the period of maternal performance "static reaction", it is easy to carry out breeding and the number of litters is high. Adopting the "double mating" approach has a higher rate of conception and tying than "single breeding." Timely elimination of the following species of pigs should be eliminated in time: (1) Poor male boar; (2) Three consecutive female pigs; (3) No sows with other disease factors; Sows; 5 old sows with few litters. Maternity management 1 The delivery room and utensils should be thoroughly and thoroughly disinfected, and the sows' breasts should be wiped clean with potassium permanganate. 2 When the sow is difficult to deliver, artificial midwifery should be provided. 3 Assuring that the sow has production workers when they are born. In order to allow the sow to give birth during the daytime, chloroprostaglandinol can be injected at 10:00 a.m. 1-2 days before the sow's expected date of production. This facilitates the sow's delivery and weaning at the same time, and at the same time facilitates the organization of production. 4 pay attention to the newborn piglet insulation and pressure. 5 Fix the teat and let the piglet eat colostrum. Newborn piglets that do not eat colostrum are generally difficult to survive. To fix the teats, you can generally use the method of “grabbing the two headsâ€. That is, the weakest piglet is placed on the front nipple and the strongest piglet is placed on the last nipple. 6 In addition, the piglets should be placed in a reasonable position and care should be taken when they are fostered. The maturities of the two litter piglets should be as close as possible, and the foster piglets must eat colostrum. 7 supplement iron. 8 The start of early hunger should not be later than 7 days of age. Disease prevention and treatment To provide a good living environment for piglets, there must be a strict disinfection system and good insulation and cold-proof and windproof measures. At the same time, the delivery room is required to be dry and not wet. General newborn piglets are injected with effective antibiotics to prevent piglets jaundice, and postpartum sows are injected with large doses of antibiotics to prevent litter-infected bacterial infections as well as mastitis and metritis. For piglets suffering from yellow-white fleas, tobramycin sulfate has special effects. China Agricultural Network Editor
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