您好，欢迎访问中国农业科学院 机构知识库！

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Dietary supplementation of methionine mitigates oxidative stress in broilers under high stocking density

文献类型： 外文期刊

作者： Miao, Z. Q. 1 ; Dong, Y. Y. 1 ; Qin, X. 1 ; Yuan, J. M. 2 ; Han, M. M. 1 ; Zhang, K. K. 1 ; Shi, S. R. 3 ; Song, X. Y. 1 ; Z 1 ;

作者机构： 1.Shanxi Agr Univ, Coll Anim Sci, Taigu 030801, Shanxi, Peoples R China

2.China Agr Univ, State Key Lab Anim Nutr, Coll Anim Sci & Technol, Beijing 100193, Peoples R China

3.Chinese Acad Agr Sci, Poultry Inst, Yangzhou 225125, Jiangsu, Peoples R China

关键词： methionine; stocking density; mortality; oxidative stress

期刊名称：POULTRY SCIENCE （ 影响因子：3.352； 五年影响因子：3.679 ）

ISSN：

年卷期： 2021 年 100 卷 8 期

页码：

收录情况： SCI

摘要： We aimed to investigate whether dietary supplementation of methionine could mitigate intestinal oxidative injury in broilers under high stocking density (HSD). In the grower phase (d 22-42), 576 broilers with similar body weight were randomly chosen and divided into 8 groups in a 2 x 4 factorial experiment. Two different stocking densities (14 and 20 broilers per m(2)) were tested with 4 different methionine levels: 0.35%, 0.4%, 0.45%, or 0.5%. Intestinal morphological and oxidative stress markers were assessed at the end of the test period. The results showed that mortality of broilers was significantly higher in the HSD group fed 0.35% methionine diet than the other groups, which was reversed by supplementation with 0.40% to 0.50% methionine. HSD significantly decreased feed intake and daily weight gain. HSD treatment significantly decreased T-AOC, activity of GPX (P < 0.01) and increased the level of PCO (P < 0.01), MDA (P = 0.052) of plasma. The decreased glutathione peroxidase activity in the liver and jejunum caused by HSD was alleviated by additional methionine. Supplementation of methionine increased the ration of GSH/GSSG in the plasma. The jejunum villus height and ratio of villus height to crypt depth under low stocking density conditions with 0.40% methionine diet were the highest, whereas the 0.45% methionine group was the highest under HSD conditions. Thus, additional dietary supplementation of methionine mitigates oxidative stress in broilers under HSD conditions and 0.40% to 0.45% methionine can be applied in cage rearing broiler production for amelioration of oxidative stress caused by HSD.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：中国农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台