Research Advances in Characterisation of Ammonia-assimilation of Microorganisms in the Rumen

WANG Pengpeng1,2，TAN Zhiliang1*

doi:10.3969/j.issn.1006-267x.2010.05.007

Chinese Journal of Animal Nutrition >

2010 , Vol. 22 >Issue 05: 1171 - 1176

DOI: https://doi.org/10.3969/j.issn.1006-267x.2010.05.007

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Research Advances in Characterisation of Ammonia-assimilation of Microorganisms in the Rumen

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(1. Institute of Subtropical Agriculture, the Chinese Academy of Sciences, Key Laboratory of Free-ecological Processes in Subtropical Region, Changsha 410125, China; 2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China)

Online published: 2010-05-20

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Abstract

Rumen microorganisms utilize ammonia for microbial protein (MCP) synthesis mainly through glutamate dehydrogenase (GDH) pathway and glutamine synthetase-glutamate synthase (GS-GOGAT) pathway. There are several key enzymes such as GDH, alanine dehydrogenase (ADH), GS, glutamate synthetase (GOGAT) and so on in ammonia assimilation, whose activity are affected by ammonia concentration. This article mainly reviewed the characterisation of ammonia-assimilation by microorganisms in the rumen and the key enzymes involved.［Chinese Journal of Animal Nutrition, 2010，22（5）:1171-1176］

Key words： rumen microorganisms; ammonia assimilation; microbial protein; glutamine sythetase; glutamate dehydrogenase

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WANG Pengpeng1,2，TAN Zhiliang1* . Research Advances in Characterisation of Ammonia-assimilation of Microorganisms in the Rumen[J]. Chinese Journal of Animal Nutrition, 2010 , 22(05) : 1171 -1176 . DOI: 10.3969/j.issn.1006-267x.2010.05.007

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