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;
尤其是，用老鼠做的实验表明，肥胖和一种叫硬壁菌门的细菌的高比例存在有关。反之，那些窈窕的老鼠肠道内拟杆菌的比例更高。
In particular, work on mice suggests obesity is associated with having a high proportion of bacteria called Firmicutes, whereas the lean favour another group, the Bacteroidetes.
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