Dietary resveratrol supplementation prevents transport-stress-impaired meat quality of broilers through maintaining muscle energy metabolism and antioxidant status.
This experiment was to evaluate the effect of dietary resveratrol (Res) supplementation (0, 400 mg/kg) on growth performance, meat quality, and muscle anaerobic glycolysis and antioxidant capacity of transported broilers. A total of 360 21-day-old male Cobb broilers was randomly allotted to 2 dietary treatments (Res-free group and Res group) with 12 replicates of 15 birds each. On the morning of d 42, after a 9-hour fast, 24 birds (2 birds of each replicate) were selected from the Res-free group and then equally placed into 2 crates, and the other 12 birds (one bird of each replicate) were selected from the Res group and then placed into the other crate. All birds in the 3 crates were transported according to the following protocols: 0-hour transport of birds in the Res-free group (control group), 3-hour transport of birds in the Res-free group (T group), and 3-hour transport of birds in the Res group (T + Res group). The results showed that Res not only improved feed conversion ratio (P < 0.05) but also tended to improve birds' final body weight (P < 0.10). In the Res-free group, a 3-hour transport increased serum corticosterone concentration, muscle malondialdehyde (MDA) and lactate contents, and muscle lactate dehydrogenase (LDH) activity, while it decreased muscle glycogen content, total superoxide dismutase (T-SOD), and glutathione peroxidase (GSH-PX) activities (P < 0.05), which induced decreased breast meat quality (lower pH24h and higher drip loss and L*24 h, P < 0.05). Nevertheless, compared with the T group, Res increased muscle glycogen content and T-SOD and GSH-PX activities (P < 0.05 or P < 0.10), while it decreased muscle MDA content and LDH activity (P < 0.05), which is beneficial to the meat quality maintenance of transported broilers (lower drip loss, L*24 h, and higher pH24h, P < 0.05 or P < 0.10). This study provides the first evidence that dietary resveratrol supplementation prevents transport-stress-impaired meat quality of broilers, possibly through decreasing the muscle anaerobic glycolysis metabolism and improving the muscle antioxidant capacity.
College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China.
C
C
Zhang
College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China.
L
L
Wang
College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China.
X H
XH
Zhao
College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China.
X Y
XY
Chen
College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China.
L
L
Yang
College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China.
Z Y
ZY
Geng
D000821:Animal Feed / Q000032:analysis; D000818:Animals; D000975:Antioxidants / Q000008:administration & dosage / Q000378:metabolism*; D002645:Chickens / Q000502:physiology*; D004032:Diet / Q000662:veterinary; D019587:Dietary Supplements / Q000032:analysis; D004734:Energy Metabolism / Q000187:drug effects*; D008297:Male; D008460:Meat / Q000032:analysis*; D018482:Muscle, Skeletal / Q000187:drug effects / Q000378:metabolism*; D011897:Random Allocation; D000077185:Resveratrol; D013267:Stilbenes / Q000008:administration & dosage / Q000378:metabolism*; D013312:Stress, Physiological; D014186:Transportation
D000975:Antioxidants; D013267:Stilbenes; D000077185:Resveratrol
antioxidant capacity; broiler; meat quality; resveratrol; transport stress