Abstract: To investigate effects of a mixture of bamboo powder including vinegar liquid (BV) supplementation on growth performance, meat quality and antioxidant property in broilers during fattening, 300 15 weeks old Wenchang broilers, a Chinese indigenous breed were randomly allotted to two treatments and fed the basal diet supplemented with 0.5% BV or not (control group). Each treatment includes three replicates of 50 birds fed. The experiment lasted for 3 weeks. Although, the weight gain was not significantly different, the growth performance tended to be improved in 0.5% BV supplemented group. Besides, drip loss and pH after 12 h post-mortem were significantly decreased (p<0.05). Total Antioxidant Capability (T-AOC) also showed obvious increase in breast muscle, heart, spleen and kidney (p<0.05). The results suggested that BV may act as a natural source of feed additive for broilers fattening.