College of Animal Science and Technology; Key Laboratory of Animal Origin Food Production and Safety Guarantee of Jiangsu Province; Jiangsu Collaborative Innovation Center of Meat Production and Processing, Quality and Safety Control; Joint International Research Laboratory of Animal Health and Food Safety; National Experimental Teaching Demonstration Center of Animal Science, Nanjing Agricultural University, Nanjing, China.
J Sci Food Agric. 2021 Jul;101(9):3961-3968. doi: 10.1002/jsfa.11036. Epub 2021 Jan 3.
This study was conducted to evaluate the effects of adding guanidinoacetic acid (GAA), or complex antioxidant (CA), or their combination, in diets 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 ) and CA (0 or 150 mg kg ). This trial lasted for 18 days.
Compared with the control group, the GAA group, CA group, and GAA + CA group, decreased feed conversion ratio by 7.02%, 6.58%, and 11.40%, respectively. Guanidinoacetic supplementation increased eviscerated yield, pH (P < 0.05). Complex antioxidant supplementation increased the a* values (P < 0.05). The combination of GAA and CA did not affect the carcass traits and meat quality. Guanidinoacetic acid alone and CA alone and combined with GAA and CA decreased the reactive oxygen species (ROS) level and malonaldehyde (MDA) content (P < 0.05), and the 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. © 2020 Society of Chemical Industry.
本研究旨在评估在饲料中添加胍基乙酸（GAA）、复合抗氧化剂（CA）或两者组合对肉鸡生长性能、胴体特性、肉质和抗氧化能力的影响。将 192 只 25 日龄的肉鸡随机分为 2×2 因子设计，包括两种不同水平的日粮补充物，主要效应为添加 GAA（0 或 600mg/kg）和 CA（0 或 150mg/kg）。试验持续 18 天。
与对照组相比，GAA 组、CA 组和 GAA+CA 组的饲料转化率分别降低了 7.02%、6.58%和 11.40%。胍基乙酸的添加提高了屠体产肉率和 pH 值（P<0.05）。复合抗氧化剂的添加提高了 a*值（P<0.05）。GAA 和 CA 的组合对胴体特性和肉质没有影响。GAA 单独、CA 单独以及与 GAA 和 CA 的组合均降低了活性氧（ROS）水平和丙二醛（MDA）含量（P<0.05），且 GAA+CA 组肉鸡的 ROS 水平和 MDA 含量最低。
日粮补充 GAA、CA 或两者的组合对生长性能和胸肌的抗氧化能力具有有益作用，GAA 和 CA 的组合在提高抗氧化能力方面具有协同作用。 © 2020 英国化学学会。
