茶多酚和维生素E对肉仔鸡抗氧化性能的影响

目的]探讨在常规饲养条件下添加茶多酚和VE对肉仔鸡的生长性能和抗氧化能力的影响.方法]选用270只1日龄科宝50肉仔鸡,在基础日粮中添加不同比例的茶多酚(TP)和维生素E(VE),通过测定肉仔鸡血清中超氧化物歧化酶(SOD)和谷胱甘肽过氧化物酶(GSH -Px)活性、丙二醛(MDA)含量、总抗氧化能力(T-AOC)以及全期增重和料重比,研究单独添加茶多酚、VE以及联合添加对肉仔鸡血清抗氧化指标和生长性能的影响.结果]在日粮中添加茶多酚和VE能显著提高肉仔鸡血清中SOD和GSH - Px活性、总抗氧化能力,降低了MDA含量.其中,以联合添加60 mg/kg茶多酚和80 mg/kgVE的效果最好,极显著高于对照组(P＜0.01),同时对肉仔鸡的生长性能也有促进作用,21日龄、42日龄肉仔鸡体重极显著高于对照组(P＜0.01),而全期料重比极显著低于对照组(P＜0.01).结论]该研究为茶多酚和VE在动物生产中的应用提供了理论依据.

Effect of Tea Polyphenols and Vitamin E on Antioxidant Performance in Broilers

Objective]To investigate the effects of tea polyphenols(TP) and vitamin E(VE) on growth performance and antioxidant performance of broilers in the routine breeding conditions.Method]A total of 270 Kebao broilers at 1 day old were fed on the basic diets supplemented with TP and VE at different proportions.The malondialdehyde(MDA) content,total antioxidant capacity(T-AOC) as well as activities of superoxide dismutase(SOD) and glutathione peroxidase(GSH-Px) were measured.The whole weight gain and feed conversion rate were also determined.Result]The broilers fed on TP and VE had remarkably higher serum activities of SOD and GSH-Px,stronger T-AOC and lower MDA content than the control ones.The best effects were achieved when the supplementary dosage of TP and VE was respectively 60 and 80 mg/kg·Diet,because the experimental broilers had significantly higher antioxidant indices than the control ones(P<0.01).Additionally,the boilers at the age of 21 or 42 days old had significantly higher body weight and lower feed conversion rate than the control ones(P<0.01).Conclusion]The study provides a theoretical basis for the applications of TP and VE in animal production.