Piglets' alactation-stress with diarrhea as a main symptom is a serious problem in pig farming. The experiment indic......

为探讨复合预混料添加剂饲喂雏鸡效果,试验选用健康、体重均匀一致1日龄海兰褐商品代蛋鸡4800只,随机分为试验组和对照组,每组2400......