当前位置: 首页 > 文章 > Potential role of N-carbamoyl glutamatein biosynthesis of arginine and its significancein production of ruminant animals 畜牧与生物技术杂志(英文版) 2013,4 (4) 303-308
Position: Home > Articles > Potential role of N-carbamoyl glutamatein biosynthesis of arginine and its significancein production of ruminant animals Journal of Animal Science and Biotechnology 2013,4 (4) 303-308

Potential role of N-carbamoyl glutamatein biosynthesis of arginine and its significancein production of ruminant animals

作  者:
Bahram Chacher;Hongyun Liu;Diming Wang;Jianxin Liu
单  位:
866 Yuhangtang Road; Zhejiang University; College of Animal Sciences; P R China; Hangzhou 310058;Institute of Dairy Science
关键词:
Arginine;Lactation;N-cabamoyl glutamate;Nitrogen utilization;Pregnancy;Ruminant animals
摘  要:
Arginine (ARG) exerts many beneficial effects on animal body and enhanced angiogenesis, lactogenesis, which finally leads to the improvement in nitrogen (N) metabolism, reproduction, lactation, immunity and growth. Unfortunately, unprotected ARG willbe degraded in the rumen and its price is high, thus feeding rumen-protected ARG seems to be uneconomical. Alternatively, N-carbamoyl glutamate (NCG) is structural analogue of N-acetyl glutamate, cofactor of cabamoyl phosphate synthetase^ is lower in rumen degradation compared to ARG. Additionally, rumen epithelial and duodenal cells have potentially utilized the NCG for ureagenesis. Supplementation of NCG to high yielding dairy cows increased plasma concentration of ARG and nitric oxide, decreased theplasma ammonia N and improved lactation performance and N utilization. Supplementation of NCG enhanced pregnancy rates in rats, improved litter size and fetal survival rate, thereby improved the reproductive performance of sows. Oral NCG supplementationincreases plasma ARG and somatotropin levels, and increased growth rate and muscle protein synthesis in nursing piglets. The NCG is potential a relatively cheaper source of feed additive to offer vital compensation over oral administration of ARG, resulting in improved ruminant animal health and production. In this article, we reviewed the mechanism of ARG biosynthesis by NCG and their significance in growth, reproduction, milk production and N utilization in ruminant animals.

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