您好，欢迎访问江苏省农业科学院 机构知识库！
江苏省农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Effects of dietary supplementation of N-carbamylglutamate on lactation performance of lactating goats and growth performance of their suckling kidlets

文献类型： 外文期刊

作者： Wang, Ziyu 1 ; Wang, Ruocheng 1 ; Meng, Chunhua 2 ; Ji, Yu 1 ; Sun, Lingwei 1 ; Nie, Haitao 1 ; Mao, Dagan 1 ; Wang, Feng 1 ;

作者机构： 1.Nanjing Agr Univ, Coll Anim Sci & Technol, Nanjing 210095, Jiangsu, Peoples R China

2.Jiangsu Acad Agr Sci, Inst Anim Sci, Nanjing 210014, Jiangsu, Peoples R China

3.Minist Agr, Key Lab Crop & Anim Integrated Farming, Nanjing 210014, Jiangsu, Peoples R China

关键词： N-carbamylglutamate; Arginine; Lactation; Kicilets; Rumen papillae

期刊名称：SMALL RUMINANT RESEARCH （ 影响因子：1.611； 五年影响因子：1.813 ）

ISSN： 0921-4488

年卷期： 2019 年 175 卷

页码：

收录情况： SCI

摘要： Arginine is one of the conditional essential amino acids for immature mammals. The deficiency of arginine in the diet may constrain growth and development of newborn kidlets through affecting the milk performance of lactating goats. In our present study, lactating crossbred of Boer goat (Capra hircus) and Yangtse River Delta White (Haimen) goat with twin male suckling kidlets were used to investigate the effects of dietary supplementation of N-Carbamylglutamate (NCG) on lactation performance of lactating goats and growth performance of their suckling kidlets. At d 0 of lactation, thirty-two lactating goats (BW=40.21 +/- 2.16 kg) and their sixty-four twin male kidlets (BW=2.10 +/- 0.11 kg) were randomly allocated to 4 groups, which were fed diet contained different levels of NCG (0, 1 g/d, 2 g/d, or 3 g/d per goat respectively) for 42 days. Body weights (BW) of lactating goats and kidlets, dry matter intake, milk yield, parameters (amino acids, biochemical indices) of serum and milk, morphology of rumen papilla and jejunum villus were determined. The results showed that average daily gain (ADG) of lactating goats supplemented with NGC was significantly higher than that of the control group. The milk yield of lactating goats of 2 g/d NCG-supplementary groups were markedly higher than that of the control group at d 21 and d 42. The dietary NCG greatly increased the plasma NO (+19.94%-41.88%, P < 0.05), insulin, arginine, citrulline and ornithine and decreased the plasma NH3 (-22.86%-38.85%, P < 0.05) and urea (-19.32%-29.70%, P < 0.05). The contents of milk protein, putrescine, insulin, NO and GH in goats of 2 g/d NCG supplementary group were significantly higher than that of the control group (P < 0.05). Maternal dietary NCG increased the length, thickness of muscularis and density of ruminal papillae (P < 0.05) of the kidlets at d 42. In summary, maternal dietary 2 g/d NCG supplementation enhanced the growth performance of suckling kidlets and milk performance of lactating goats. Therefore, NCG is a promising, effective and low-cost alternative to rumen-protected arginine in ruminants.

  • 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：江苏省农业科学院

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