Zinc is a trace element which is necessary for animal nutrition. In animals, it not only participated in carbohydrate, protein and nucleic acid metabolism, but also associated with a variety activity and the secretion of hormones. So zinc played an important role in the growth of animal metabolism, bone development, immune, etc. The form of the zinc was different, and the biological utilization of zinc was also different. But, the studies that zinc acetate applied to the chicken were very few. The purpose o...