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[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 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.
[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 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. T½ and 80 mg / kg · diet, as 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 sign ificantly 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.