Fig. 1

Initial Distribution of the Gut Fungi. a Schematic diagram of the animal experimental procedure. b The relative abundance of fungi at the genus level in the gut, displaying only the top 14 genera in terms of relative abundance. c Relative abundance of fungi at the species level in the gut, showing only the top 14 species in terms of relative abundance. d Distribution of fungi at the species level in the small intestine and the large intestine. The left panel shows the distribution in the small intestine, and the right panel shows the distribution in the large intestine, displaying only the top 14 species in terms of relative abundance. e,f α-diversity of fungi in the small intestine and the large intestine. The (e) panel shows the Shannon index, and the (f) panel shows the Simpson index. The green box represents the Shannon index in the small intestine, and the blue box represents the Simpson index in the large intestine. g PCoA of the large intestine and the small intestine fungal community structure based on Bray–Curtis dissimilarity. h Heatmap showing the relative abundance changes of fungi with significant differences (P < 0.05) between the small intestine and the large intestine. The darker colors indicate higher relative abundance. A total of 26 fungal species showed significant differences