葛根提取物对肉鸡生产性能、免疫功能和抗氧化能力的影响

Effects of Pueraria lobata extract on production performance,immune function and antioxidant capacity of broilers

为探讨葛根提取物对肉鸡生产性能、免疫功能和抗氧化能力的影响,试验选取240只1日龄体质健康的艾拔益加(AA)商品肉鸡,随机分成4组,每组5重复,每个重复12只,对照组饲喂基础日粮,试验A、B、C组在饲喂基础日粮的基础上分别添加100、300 mg/kg和600 mg/kg葛根提取物,试验为期42 d。试验结果表明:与对照组相比,试验B组和试验C组平均日增重显著提高(P<0.05),肉鸡血清IgG水平、补体C3和C4含量均显著提高(P<0.05);试验B组和试验C组与对照组相比,肉鸡血清超氧化物歧化酶、谷胱甘肽过氧化物酶和血清总抗氧化能力均显著提高,丙二醛含量显著降低(P<0.05)。由此可见,饲料中添加葛根提取物能够提高肉鸡的生产性能,增强肉鸡的免疫功能和抗氧化能力。在本试验条件下,葛根提取物在肉鸡饲料中的适宜添加量为300 mg/kg。

The purpose of this study was to investigate the effects of Pueraria lobata extract on production performance,immune function and antioxidant capacity of broilers.240 one day old AA commercial broilers were randomly divided into 4 groups,5 replicates in each group and 12 broilers in each replicate.The control group was fed with basic diet,and the experimental groups A,B and C were fed 100,300 mg/kg and 600 mg/kg Pueraria lobata extract with the basal diet respectively.The experiment lasted for 42 days.The results showed that compared with the control group,the average daily gain of group B and group C was significantly increased(P<0.05),serum IgG level,complement C3 and C4 content of broilers were significantly increased(P<0.05).Compared with the control group,serum superoxide dismutase(SOD),glutathione peroxidase(GSH-PX)and total antioxidant capacity of broilers in group B and group C were significantly increased,and the content of malondialdehyde(MDA)was significantly decreased(P<0.05).In conclusion that Pueraria lobata extract could improve the production performance of broilers,enhance the immune function and antioxidant capacity of broilers.Under the experimental conditions,the appropriate dosage of Pueraria extract in broiler feed was 300 mg/kg.