With the development of intensive aquiculture, the incidence of livestock and poultry’s intestinal disease become more and more. The mian method of preventing and treating diseases is application of antibiotics and chemical antimicrobials, but improper use cause the problem of environmental sanitation and food safety. Chinese herbal medicine belongs to natural medicine and has many advantages.: no pollution、little toxicity、and the lower residual levels of toxic substance. One of the effective way to...