Lactation refers to the stage of sow giving birth to weaning. The selection and control of feed during lactation is the most important aspect of the entire production process. Sows do not feed on calving day, postpartum feed some warm bran soup + biochemical soup pill (3 ~ 5 pills / time) + brown sugar saline, fed twice, to promote the discharge of lochia and rapid recovery of physical strength. On the second day after giving birth, sows are fed about 1 kilogram of feed, and then 0.5 kilogram of feed is added daily, and the normal amount of food is restored within 4 to 5 days. After the appetite is normal, the sows are allowed to feed freely to ensure that the piglet sucks enough milk and maintains good reproductive performance. One week before the piglets were weaned, the nursing sows could be gradually reduced, and the nursing material was gradually replaced with an empty material. On the day of weaning, the daily feed volume of sows was maintained at 2.4-2.6 kg. In the lactation period, feed materials sold on the market should be selected, and soy oil or dry fat should be added to the feed properly. Green feed should be provided at 1:1.
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