Effect of Water-soluble Alfalfa Polysaccharide on Growth Performance and Immune Function of Broilers

A total of 120 1-day-old Avian broilers were assigned to 4 groups randomly with 30 for each. Ⅰ, Ⅱand Ⅲ groups were as the experimental ones and Ⅳ as Control. Based diets added alfalfa polysaccharide 0.5%, 1% and 2% were fed to the experimental groups respectively, and the Ⅳ fed based diets to determine effects of alfalfa polysaccharides on growth performance and immune function of broilers. The results showed that the average weights of 3 experimental groups in 21 and 35-day-old broilers were not significant compared with control group, and the differences among the adding groups were also not significant(P 0.05). At the age of 42 d, the highest average weight was group Ⅱ(P0.05), followed by group Ⅲ(P0.05), group I had no significant difference compared with the control group (P 0.05). GroupⅡcan increase the weights of broilers significantly (P0.05), and decrease feed gain significantly (P 0.05), GroupⅢ can increase serum antibody levels significantly of broilers (P 0.05).