饲料配方与营养配比

The growth cycle of pigs is divided into piglet stage, growing stage, finishing stage and other stages, and the nutritional requirements of each stage vary greatly. The piglet stage (0-30 kg) requires high-protein, easily digestible feed with a protein content of about 20%-22% to promote bone and muscle development. In the growing stage (30-60 kg), the feed protein content can be appropriately reduced to 16%-18%, and the energy level is gradually increased. The finishing stage (60 kg to slaughter) requires high-energy feed, with an energy level of 3.2-3.4 megacalories/kg and a protein content reduced to 14%-16% to promote fat deposition. Gestating sows need balanced nutrition, with protein content of 14%-16% and energy level of 2.8-3.0 megacalories/kg. Lactating sows have the highest nutritional requirements, with protein content of 18%-20% and energy level of 3.0-3.2 megacalories/kg to ensure sufficient milk secretion. Scientific feed formulas should reasonably mix raw materials such as corn, soybean meal, and bran according to the nutritional requirements of different stages, add appropriate minerals and vitamins, improve feed conversion efficiency, and reduce breeding costs.