Resveratrol beneficially affects meat quality of heat‐stressed broilers which is associated with changes in muscle antioxidant status

Abstract

This study was conducted to evaluate the effect of dietary resveratrol (Res) supplementation on serum parameters, meat quality and muscle antioxidant status of broilers under heat stress (HS). A total of 270 21-day-old male Cobb broilers were randomly assigned to three treatment groups with six replicates of 15 birds each. The three treatment groups were as follows: the control group, in which birds were reared at 22 ± 1°C, and the HS and HS + Res (400 mg/kg) groups, in which birds were reared at 33 ± 1°C for 10 h (08.00-18.00 h) and 22 ± 1°C for the rest of the time. Compared with birds in the control group, birds in the HS group exhibited increased serum corticosterone (CORT) and triacylglycerol contents, L*, drip loss and muscle malondialdehyde content, and decreased serum glucose content, pH , muscle total antioxidant capacity (T-AOC), catalase (CAT) and glutathione peroxidase (GSH-PX) activities (P < 0.05). Compared with birds in the HS group, birds in HS + Res group exhibited increased serum glucose content, a*, pH , muscle T-AOC and CAT activities, and decreased serum CORT and triacylglycerol contents, L* , drip loss and muscle malondialdehyde content (P < 0.05). In conclusion, Res beneficially protects against HS-impaired meat quality of broilers through regulating muscle antioxidant status.

Protective effects of resveratrol against high ambient temperature‐induced spleen dysplasia in broilers through modulating splenic redox status and apoptosis

“…found that the activities of Gpx, GST, CAT, and SOD in muscle of heat‐stressed broilers were decreased . Our previous study also found similar results . Our present study showed that the mRNA levels of Nrf2, Gpx, MnSOD, HO‐1, and GR, and the activities of T‐AOC, T‐SOD and CAT in the spleens of broilers were decreased by HT, indicating that HT suppressed the activation of Nrf2‐signaling pathway in spleen, which may be the important reason for the HT‐induced oxidative stress damage of spleen.…”

“…In this study, we discovered that the splenic contents of MDA, PC and 8‐OHdG were significantly increased by HT, indicating that HT induced oxidative stress damage in the spleen. It was reported in our previous study that the MDA content in muscle of heat‐stressed broilers was significantly decreased by dietary resveratrol supplementation . This present study further found that resveratrol was able to reduce significantly the content of MDA in the spleens of heat‐stressed broilers.…”

“…The animal‐handling protocol was reviewed and approved by the ethics committee of Anhui Agricultural University, Hefei, People's Republic of China. Birds, diets, and the experimental design were the same as those in our previous reported paper . Two hundred and seventy male Cobb broilers at 21 days old were individually weighed (the average weight was about 670 g) and divided into three groups: normal ambient temperature group (NT), HT group and HT + trans‐ resveratrol group (HT + Res).…”

“…Resveratrol, a natural bioactive polyphenol found in many plants, is gaining more attention from researchers because of its multiple benefits . Previous studies found that resveratrol could prevent HT‐impaired antioxidant capacity in the serum and muscle of broilers and could therefore alleviate HT‐induced oxidative stress. Liu et al .…”

Effect of resveratrol on growth performance, rectal temperature and serum parameters of yellow‐feather broilers under heat stress

“…Similarly, Zhang et al. () reported that diet supplementation with resveratrol increased total antioxidant capacity and catalase (CAT) activities in muscles and improved meat quality of heat‐stressed broilers. Additionally, some studies showed that resveratrol also regulates substance metabolism in the blood to alleviate the negative impact of heat stress in order to maintain homeostasis in animals (Das, ; Sahin et al., ).…”