Pulvers of Astragalus membranceus and Anegelica sinensis with different ratio were supplemented respectively to the same basic dietary of Gushi chicken,using a proportion of 1% in the diet. till14day,anatomizing and removing the samples(thymus gland ;cloacal bursa;spleen;and blood) then the immune organ index、Newcastle disease specific antibody titer and the quantity of T lymphocyte of peripheral blood were tested. The results show that immunological parameters of the test groups are significant difference compared with control group (P＜0.05);Addition of Astragalus membranceus to the chicken’s feed is better than Anegelica sinensis on immune effect;And the best effect lies in 5:1 ratio of Astragalus membranceus and Anegelica sinensis.
