Every litter of piglets produced by sows has a situation of uneven size, and some cases of farrowing and lack of nipples also occur. If no artificial rearing is performed, strong and weak counties are prone to appear, and weak piglets are sucking. Insufficient and severe malnutrition, even death. 1. Strong and weak separation, feeding on time. The litters that grow well in a nest and have strong constitution are divided into one column. The pups with lighter weight and incomplete development are divided into one column. At the beginning, the baskets were used to cover and the straws were covered with straw and covered with quilts. We started breastfeeding once every 1-2 hours, once every 3 hours after one week, and once every 4 months after 1 month. 2, fixed nipples, eat good colostrum. Weak piglets often cannot find nipples in time, especially in the cold season. After the sows have finished their farrowing, arranging the weak piglets on the nipples in front of the milk to eat the colostrum and feeding it on the teat will not only benefit the balanced growth of the piglets, but also promote the development of the sow's mammary glands. 3, early inducement, weaning by stages. Seven days after the piglets were born, they could be bred with Chongqing 961 Liu's feed. Put the feed in the palm and hand it to the mouth of the piglet for total feeding. 2 - 3 days later, piglets can freely feed in the trough. Feed should be fed dry, can not add water to the lake feeding, so as not to affect the effect. After feeding, provide enough clean drinking water, let them drink, apply warm water in winter, the number of piglets in the trough is separated by wooden root nails to avoid competition or strong sleep. The sow's milk secretion gradually decreases after 40 days of sow production. If the weight of the separate two-column piglets is very different, we can wean the healthy and heavy ones to the weaning and feed the defecation outside the weasel; leave the weak ones for the sows. If you continue breastfeeding for 15 days, you can reduce the difference in the weight of the two-column piglets. Do not allow them to gregariously avoid being bitten. 4, prevent disease, vaccinate. In the 30 days after the birth of the piglet, daily and 1 - 2 spoons of oxytetracycline mixed with food for feeding sows, can effectively control the white piglets, if the white piglets occurred. Use sulfamethoxazole tablets (the tablets are printed with SMT words) 2 pieces of fine water to 2 tablespoons of gavage, generally serving 1 - 2 Jiyu. Fill the pig with a sound of filling. Hold it with a thick stick of thumb and hold it with your knees. Fill it with a small spoon. Piglets should be injected with triple vaccine and piglet paratyphoid vaccine within 40 days.