Increase the number of births per year: The key is to shorten the period of breast-feeding and increase the rate of conception in one love period. Can also work hard in the nursing period to shorten the interval between estrus. This must first ensure that the sow's reproductive tract quickly returns to normal, rations under the premise of improving appetite, to ensure that sows have a better body at weaning. At the same time, the ration was controlled on the first day of weaning, and small groups were raised. The sows can also be rushed to the side of the boar to stimulate estrus, and gonadotropins should be used if necessary. Increase the number of live births: The first is to increase the fertility rate of the pigs. It can improve boar semen quality, timely breeding and application of certain hormones. The second is to reduce embryonic deaths, and take measures against the three death peaks (9-13 days of fertilization, 3rd week of pregnancy and 60-70 days of pregnancy), use the full price feed according to the feeding standards, and do not feed mildew, spoilage, freezing, With toxic or strongly irritating feeds, feed conversion should not be frequent, and the number of feedings should be appropriately increased during the late pregnancy. Management is crowded and non-skid, and whipping is strictly prohibited. In summer, do a good job of preventing heatstroke and cooling, install heat-protection and cooling equipment, strengthen greening, and provide enough clean drinking water to reduce the impact of heat stress. Increase the weaning weight: It is mainly to do a good job in iron supplementation, selenium supplementation, feeding, anti-diarrhea and environmental microclimate control. The general procedure is: 3 days old piglets supplementing selenium and supplementing iron; 7 months old feed, feedstuffs use good quality whole pig milk pellets, so that the strong piglets can feed first; 20 days old can do good milk feed. , After 20 days of age, grasping materials, and seizing the busy meal, add less, increase day by day, no material left, keep fresh. Disease prevention and control is mainly to prevent diarrhea, edema disease, injection of various vaccines, and strengthen nursing care, observe piglets feed and feces every day sooner or later, and strive to create a quiet, comfortable, warm group environment.
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