一．养猪在品种上要发展“小肚子”，逐步消灭“大肚子”。现在有些人买猪就看肚子大小，不看别的，以此来判断肉质，在体型上要不小不要大。各地未经杂交改良的猪种多为肥肉型，猪的肚子很大，皮下脂肪很多，这种猪在市场上已日益不受欢迎。改良的猪种，瘦肉率一般在５０％左 one. Pigs to develop in the variety of “belly bulbs”, and gradually eliminate the “pregnant belly.” Now some people buy pigs to see the size of the stomach, do not look at anything else, in order to judge the meat quality, not small or not big. Swine farms, which have not been improved by crossbreeding, are mostly fat-meaty, with a large stomach and a lot of subcutaneous fat. These pigs have become increasingly unpopular in the market. Improved pig breeds, lean meat rate is generally 50% left