GAA and antioxidants for growth performance
This study was conducted to evaluate the effects of adding guanidinoacetic acid (GAA), or complex antioxidant (CA), or their combination in diet, on the growth performance, carcass traits, meat quality and antioxidant capacity of broilers. A total of 192 25-day-old broilers were assigned to a 2 × 2 factorial design including two dietary supplements at two different levels, in which the main effects were the addition of GAA (0 or 600 mg kg-1 ) and CA (0 or 150 mg kg-1 ). This trial lasted for 18 days. Compared with the control group, GAA group, CA group and GAA+CA group decreased feed conversion ratio by 7.02%, 6.58% and 11.40%, respectively. GAA supplementation increased eviscerated yield, pH24h (P < 0.05). CA supplementation increased the a* values (P < 0.05). The combination of GAA and CA did not effect the carcass traits and meat quality. GAA alone and CA alone and combined with GAA and CA decreased reactive oxygen species (ROS) level and malonaldehyde (MDA) content (P < 0.05), and GAA+CA group had the lowest ROS level and MDA content of broilers. Dietary supplementation of GAA, CA or their combination had beneficial effects on growth performance and breast antioxidant capacity, and the combination of GAA and CA could exert a synergistic effect in improving antioxidant capacity. This article is protected by copyright. All rights reserved.
Zhao W, Li J, Xing T, Zhang L, Gao F. Effects of guanidinoacetic acid and complex antioxidant supplementation on growth performance, meat quality and antioxidant function of broiler chickens. J Sci Food Agric. 2020 Dec 21.