Weaned piglets are piglets that are weaned from 3 weeks of age to 5 weeks of age to 10 weeks of age. Piglet weaning is another strong stimulus since birth. The first is the change of nutrition, which is changed from eating warm liquid breast milk to eating solid dry raw feed; second, changing the life of dependent sows to a completely independent life; and thirdly, changing the living environment and transferring from the delivery room. Transferred to the nursery and accompanied by regrouping; the fourth is susceptible to pathogenic microorganisms infected and sick. Many of the above factors can cause stress reactions in piglets, affect the normal growth and development of piglets and cause diseases. Strengthening the feeding and management of weaned piglets will reduce the stress loss of weaned piglets. First, the nutritional needs of weaned piglets Weaned piglets are in a period of rapid growth, on the one hand, the nutritional needs of particularly large, on the other hand, the function of the digestive organs is still not perfect. After weaning, the nutrient source is completely changed from breast milk to solid feed. The milk fat and protein that can be completely digested and absorbed in breast milk are replaced by cereal starch and vegetable protein, and the feed also contains a certain amount of crude fiber. The inadaptability of feedstuffs to piglets is the main cause of diarrhea in piglets. Diarrhea in piglets is one of the main reasons for the death of weaned piglets. Therefore, it is very important to meet the nutritional needs of weaned piglets to improve the economic benefits of pigs. 1. Diet: Pre-weaning feeding artificial milk, artificial milk ingredients to expand the feed as well, practice has proved that extruded feed is not only digestive piglets very beneficial, but also effectively reduce the piglets diarrhea. After extrusion, the feed can be gelatinized and the starch and anti-nutritional factors are destroyed. The pasteurization of the pasteurizes the Pakistani style, improves the palatability, and reduces the incidence of diarrhea. Experiments showed that compared with the control group, pigs fed puffed feed had a 8% increase in daily gain from 20 days to 40 days, and a 1.2% decrease in diarrhea rate. After weaning, it was gradually changed to 2.5 mm to 3 mm crushed material. The granular material can improve the palatability of piglets and it is not easy to absorb moisture and cause mildew. 2. Nutrition standards: Based on the nutritional standards of piglets provided by the Iberian breeder breeding company in France, and based on the experience accumulated in the actual production, our field formulates the existing nutritional standards for piglets.
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