Effect of Chinese herbal medicine on microflora in intestine of broilers

250 AA broiler chickens aged one day were randomly divided into a non-medicine group, a chemical group and three groups with different dose of Chinese herbal medicine. The amount of E.coli., Salmonella and anaerobe were determined at week two and week four. There was 1.82×107 of E.coli. and 4.43×108 of anaerobe in one gram intestinal content in high Chinese herbal medicine group, and 1.62×107 of E.coli. and 2.17×108 of anaerobe in chemical group when the chickens were two weeks old. After four weeks, the amount of E.coli. and anaerobe was 1.57×107 and 1.94×108 in one gram intestinal content in high Chinese herbal medicine group, and that was 3.51×107 and 1.16×108 in chemical group. It is concluded that Chinese herbal medicine can replace chemical medicine in preventing intestinal infectious diseases in broilers.