Abstract:

6 immune parameters, complement C3, complement C4, alkaline phosphatase(AKP), acid phosphatase (ACP), superoxidde dismutase(SOD) and Catalase(CAT) had been studied, after feeding isomaltose hypgather or yeast cell wall. The experimental results showed that feed added yeast cell wall, or isomaltose hypgather had impact on immune function of soft-shelled turtle but not significantly(P>0.05). Only on the SOD activity, the results showed significant difference(P<0.05). But the feed jointly added yeast cell wall and isomaltose hypgather can significantly improve immune function of the soft-shelled turtles, on C3, AKP, ACP, SOD and CAT ( P < 0.05),but not on C4 (P>0.05). Interval feeding the feed jointly added yeast cell wall and isomaltose hypgather had no significant impact on immune function of soft-shelled turtle, even worse than continuous feeding the feed jointly added yeast cell wall and isomaltose hypgather.