Dietary resveratrol on growth performance, serum biochemical parameters, antioxidant capacity, and meat quality in broilers.

Indigenous broiler breeds are increasingly valued for their unique organoleptic attributes, although they typically exhibit suboptimal growth performance and a high propensity for abdominal fat deposition. This study evaluated the effects of dietary resveratrol (0, 250, and 1,000 mg/kg) on the growth performance, carcass traits, and antioxidant status of 252 one-day-old Wenshi Tianlu Black Five broilers over a 51-day period. Resveratrol supplementation increased significantly the average daily gain and decreased the feed-to-gain ratio across the entire trial (p < 0.01) without affecting feed intake. Specifically, 250 mg/kg resveratrol reduced the abdominal fat percentage (p < 0.05), while 1,000 mg/kg resveratrol decreased malondialdehyde level (p < 0.05) and increased the content of total cholesterol in serum (p < 0.01). However, supplementation of 250 mg/kg or 1,000 mg/kg resveratrol showed limited effects on the meat quality (p > 0.05). In conclusion, 250 mg/kg of resveratrol can improve carcass traits, while 1,000 mg/kg of resveratrol showed better effect of the growth performance and antioxidant ability in Wenshi Tianlu Black Five broilers.