a decreasing trendp < 0.05
Among them, the relative abundance of genera Fusobacterium (7.66%), Corynebacterium (6.43%), Rothia (5.71%), Bradyrhizobium (5.24%), and Brevundimonas (5.21%) were more than 5% in the duodenum and showed a decreasing trend from the duodenum to the rest of the intestinal sections ( p < 0.05).