Abstract: The objective of this study was to compare the effect of two esters of αtocopherol, allracαtocopherol acetate (DLαTOA) and RRRαtocopherol succinate (DαTOS) on growth, antioxidant capacity and meat quality in broilers. 320 onedayold commercial Arbor Acres broilers were randomly distributed into 4 treatments, each of which had 8 pens of 10 chicks per pen. Birds were fed with the diets supplemented with 30 mg·kg-1 DLαTOA (control), the basal diet with DαTOS supplementation 10 mg·kg-1 (TOS1 group), 30 mg·kg-1 (TOS2 group) and 50 mg·kg-1 (TOS3 group), respectively for 42 d. The results showed that there was no significant difference (P>0.05) in the growth among the treatments. Significant positive correlations existed between dietary supplemental αTOS levels and plasma (R2=0.983 1, P<0.01) or hepatic (R2=0.933 6, P<0.05) αtocopherol concentrations, and a negative correlation with plasma (R2=-0.948 7, P<0.05) or hepatic (R2=-0.990 1, P=0.051 8) malondialdehyde (MDA) levels. In comparison with the control and αTOS1 groups, 3050 mg·kg-1 dietary αTOS supplementation resulted in an increase in the activities of serum TSOD, GSHPx, TAOC and hepatic TSOD, TAOC to some extent (P<0.05 or P<0.01). Furthermore, the level of hepatic ROS was decreased significantly (P<0.05). As for the meat quality, 48 h drip loss and shear force of breast and leg muscle was significantly decreased in broilers of TOS2 and TOS3 groups and also the cooking loss of leg muscle. But no significant differences were observed on pH45 min, pH24 h, 24 h drip loss and meat color (P>0.05). These results indicated that 3050 mg·kg-1 dietary DαTOS supplementation could enhance the antioxidant capacity of broilers, and further the water holding capacity and tenderness, which might result from increased retention of serum and hepatic αtocopherol and reduction in lipid peroxidation, as evidenced by the decrease in MDA and ROS.