Effects of Compound Chinese Herbal Medicine Mixtures on Growth Performance and Antioxidant Activities in Broilers Under Heat Stress

In order to study the effects of Chinese herbal medicine compound mixtures on growth performance and antioxidant activities in broilers under heat stress,240 healthy male chickens broilers at the age of 7 day old were selected,and randomly divided into 4 groups.Each group had 5 repeating groups.The control group was watered normally,and the experimental groups were watered with 0.5%,1.0% and 1.5% the Chinese herbal medicine compound mixtures,respectively.The trial lasted 5 weeks. The results showed that growth performance did not differ among treatment groups during the starter period(P0.05).In the finisher phase,ADG,ADFI and FCR of the experimental groups 1 and 2 were significantly higher than the control group(P0.05). in the compared with the control,SOD activity in serum,liver and muscle increased very significantly(P0.01), GSH-Px activity in serum and liver increased significantly(P0.01 或 P0.05)and MDA content in serum and liver decreased significantly(P0.01).in the experimental groups 2 and 3 compared with the contron. These results imply that the Chinese herbal medicine mixtures could enhance growth performance and improve the anti-oxidant lever in broilers under heat stress.