Vitamin is a kind of important and useful feed additives. Vitamins are micro nutritive matter that can keep essential metabolic functions and growth. However, Vitamins' loss is serious during the manufacture of compound feeds. How to reduce the loss of vitamins during the manufacture of compound feeds was what the article would study.Firstly, the article investigated the rules that the manufacturing processes of compound feeds influenced vitamins taking vitamin c as an example. Through integrated analysis, ...