门级以下瘤胃内最多的是拟杆菌、厚壁菌门、螺旋体和纤维菌门。
Bacteroidertes, Firmicutes, Spirochaetes, and Fibrobacteres were the most abundant in rumen under phyla level.
其中大多数分属四个门类：放线菌门、拟杆菌门、厚壁菌门及变形菌门。
Most belonged to four phyla: Actinobacteria, Bacteriodetes, Firmicutes and Proteobacteria.
结果表明：1）瘤胃中拟杆菌门、硬壁菌门、螺旋体门和纤维杆菌门为优势菌门；
The results showed as follows:1) Bacteroidertes, Firmicutes, Spirochaetes and Fibrobacteres were the most abundant in rumen under phyla level;
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