The experiment was conducted to study the effects of grape seed proanthocyanidins(GSPs)on performance,immune function and antioxidant capacity of Cherry Valley ducks.Four hundred and eighty one-day-old cherry valley ducks with similar body weight and health status were randomly divided into 4 groups with 6 replicates in each group and 20 replicates in each group.groups with 6 replicates in each group and 20 ducks in each repetition.The control group was fed with basal diet,and the other groups were fed with GSPs of 50,75 and 100 mg/kg respectively.The results showed that:(1)compared with the control group,the average daily feed intake(ADFI)and average daily gain(ADG)of 75 gsps Group and 100 gsps group were significantly higher than those of the control group(P＜0.05).Compared with the control group,the levels of IgG and TNF-α in the serum of Cherry Valley Ducks supplemented with 75mg/kg GSPS decreased significantly(P＜0.05),and the levels of IgG and TNF-α in the serum of Cherry Valley Ducks supplemented with 75 mg/kg GSPS decreased significantly(P＜0.05),Compared with the control group,Cat and T-AOC were significantly increased in the GSPS groups,while the activities of SOD and GSH-Px were significantly increased in the 75 GSPs and 100 GSPs groups(P＜0.05),and the concentration of Malondialdehyde(MDA)was significantly decreased in the 75 GSPs and 100 GSPs Glutathione peroxidase groups(P＜0.05)The results showed that adding GSPs to the diet of Cherry Valley Ducks could improve the daily gain,immunity and antioxidation ability of Cherry Valley ducks.The effect of GSPs 75 mg/kg in the Diet was better.
grape seed proanthocyanidinscherry valley duckgrowth performanceimmune functionantioxidant capacity
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