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反刍动物瘤胃高效产氨菌菌群结构、功能及其调控

DOI: 10.3969/j.issn.1006-267x.2015.08.002

Keywords: 反刍动物,高效产氨菌,结构与功能,调控

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Abstract:

对于反刍动物来说,氮的平均利用效率仅为25%左右,绝大部分无效氮随粪尿排出体外。氮素的大量流失不仅造成饲料蛋白质资源浪费,而且加剧环境污染。而反刍动物瘤胃中高效产氨菌(HAB)产氨速率过快,是导致反刍动物氮利用率低的主要原因之一。影响瘤胃内HAB菌群结构与功能的因素有很多,离子载体、植物提取物、细菌分泌的细菌素、饲粮类型等因素均可对瘤胃HAB菌群结构与功能产生影响。本文对瘤胃HAB菌群结构、功能及其调控手段进行了综述,以期为提高反刍动物氮利用效率提供科学依据。

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