反刍动物瘤胃内微生物氮代谢动力学的研究进展

doi:10.7668/hbnxb.2009.S1.049

摘要/Abstract

摘要： 氮素是反刍动物的必需营养元素之一,蛋白质代谢实质上是氮素代谢。准确研究反刍动物瘤胃微生物氮素代谢会更真实的反映动物对蛋白质的消化、吸收和利用,在提高蛋白质利用率的同时减少氮素排放对环境的污染,也有助于完善反刍动物整体蛋白质周转体系,同时对于动物饲养标准的修订、饲料原料营养参数的准确性和合理配制日粮具有重要意义。为此,文章综述了微生物氮素循环机制、微生物氮合成量的测定方法、氮素循环模型和影响微生物氮素循环的主要因素。

关键词: 反刍动物, 瘤胃微生物, 氮代谢, 同位素标记

Abstract: Nitrogen is one of essential nutrition elements for ruminant. Protein metabolism is virtual nitrogenmetabolism. Studies on intraruminal recycling of microbial of ruminant are benefit to reflect the protein metabolism of ruminant, and to improve ut ilization of preformed protein and reduce the pollution resulted from excessive nitrogen of rum-inant feces. It is useful to perfect protein recycling system, revise protein feeding systems and formulate rations rationally.So this article reviewed nitrogen recycling of microbial, research methods and the factors influencing microbial nitrogen recycling.

Key words: Ruminant, Ruminalmicroorganisms, Nitrogenrecycle, Isotopictracer

中图分类号:

S811.6??

ZHONGRong-zhen, TANZhi-liang. Review on Intraruminal Recycling Kinetics of Microbial Nitrogen in Ruminant[J]. ACTA AGRICULTURAE BOREALI-SINICA, doi: 10.7668/hbnxb.2009.S1.049.

http://www.hbnxb.net/CN/Y2009/V24/IS1/208

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