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草业学报  2014 

山羊瘤胃和粪便中厌氧真菌的分离及发酵粗饲料能力初探

DOI: 10.11686/cyxb20140443, PP. 357-363

Keywords: 山羊,厌氧真菌,体外发酵

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Abstract:

本研究旨在分离山羊瘤胃及粪便中的厌氧真菌,并比较其对粗饲料的降解能力。分别采集2头饲喂青干草的南京本地山羊的瘤胃液与新鲜粪便,采用厌氧培养法,进行厌氧真菌的分离鉴定。实验从山羊瘤胃中分离到4类厌氧真菌,分别归于Neocallimastix、Piromyces、Orpinomyces和Anaeromyces属;从粪便中分离到二类厌氧真菌,归于Neocallimastix和Piromyces属。以稻草、麦秸、玉米秸为底物,对所分离的代表性厌氧真菌进行发酵降解试验。结果表明,所获菌株对稻草秸的干物质降解率大于30%,而对玉米秸的降解率低于25%。与所分离的瘤胃厌氧真菌相比,来源于粪便的厌氧真菌发酵上述3种底物时,所得的产气量和表观干物质消失率均较低。结果说明,本研究分离所得的厌氧真菌对不同底物的降解能力不一致,这可能与菌株自身的理化特性及底物的营养组成不同有关。

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[26]  Orpin C G, Joblin K N. The Rumen Microbial Ecosystem (2nd ed.)[M]. London: Elsevier Applied Science Press, 1988.
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