Intestinal tract is an important digestive organ as well as an important immune organ of laying hens.Intestinal tract damage brings great economic losses to laying hens.Intestinal problems can be triggered by many factors,such as bacterial infections such as E.coli,wate...MORE Intestinal tract is an important digestive organ as well as an important immune organ of laying hens.Intestinal tract damage brings great economic losses to laying hens.Intestinal problems can be triggered by many factors,such as bacterial infections such as E.coli,water sanitation,mycotoxins,and intestinal damage caused...