Effect of Different Mixed-herb & Herb Levels on Activities of T-SOD and Content of MDA in Serum of Growing Cattles

The experiment was conducted to evaluate the effects of 4 pieces of mixed-herb herb levels on the activities of main blood antioxidant enzyme(T-SOD)and the content of Maleic Dialdehyde(MDA).Fifty four crossbred beef cattles(Limousin× Lu-xi) were randomly divided into control groups(no herb added) and experiment groups(2%,4%),9 groups included.The results showed that the groups of 2% had better effect(P0.05).That of 4% had no higher progress.