中文摘要：本研究旨在探索饲粮中添加胍基乙酸(GAA)或复合抗氧化剂(CA)及两者组合对肉仔鸡生长性能、胴体性状、肉质及抗氧化能力的影响。试验为期18 d，选用192只25日龄肉仔鸡，采用2 × 2析因设计，饲粮中添加2种不同水平的GAA(0或600 mg/kg)和CA(0或150 mg/kg)。研究发现，与对照组相比，添加GAA、CA和GAA + CA均降低了饲料转化率；添加GAA提高了全净膛率及pH值(24h)；添加CA增加了a*值；GAA+CA组合对胴体性状和肉质的影响不大；GAA、CA及GAA+CA均降低了肉鸡活性氧(ROS)水平和丙二醛(MDA)含量，其中以GAA + CA组为最。可见，饲粮中添加GAA、CA或二者联用均能促进肉鸡生长性能和抗氧化能力，且二者联用对提高抗氧化能力有协同作用。
外文摘要：BACKGROUND 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 x 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.
RESULTS 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(24h) (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.
CONCLUSION 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.
外文关键词：guanidinoacetic acid；complex antioxidant；broiler; growth performance； meat quality；antioxidant capability
作者：Zhao, W；Li, JL；Xing, T；Zhang, L；Gao, F
作者单位：Nanjing Agr Univ
期刊名称：JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
期刊影响因子：2.614
出版年份：2021
出版刊次：
点击下载：添加胍基乙酸和复合抗氧化剂对肉鸡生长性能、肉质和抗氧化功能的影响
