二动物性饲料：动物、动物产品或其加工品。

Animal feeds, such as animals, animal products or any processed products thereof.

结果表明，饲粮中含少量动物性饲料可提高仔猪增重和饲料利用率。

The results show that the diet containing small amount of animal protein concentrate can increase the gain of piglets and the feed conversion efficiency.