Fig. 9

Prevotella and sodium succinate influenced the correlations between intestinal flora and physicochemical parameters. A Redundancy analysis (RDA), parameters are represented by arrows. The longer the arrows are, the greater the correlation coefficients are. The Angle between the arrow line and the ordering axis represents the correlation between an environmental factor and the ordering axis. The smaller the Angle is, the higher the correlation will be. The larger the dot, the higher the corresponding species abundance. B Spearman's correlation analysis between serum biochemical indexes and cecal microbiota at the phylum level, R-values are shown in different colors in the heatmap, ^*P < 0.05, ^**P < 0.01, ^***P < 0.001. C The genus-level microbiome Spearman’s correlation network, the circles represent a species, the size represents its relative abundance, and different colors represent different phylum species classification. The lines between the circles represent significant correlation between the two species (P < 0.05), and the lines color red represents positive correlation and blue represents negative correlation. The thicker the lines, the greater the absolute value of the correlation coefficient. D Phylogenetic tree and heatmap, on the left, different colored branches of the evolutionary tree represent different phyla, and each end branch represents an OTU, annotated with the genus classification to which the corresponding OTU belongs, the heat map on the right represents the normalized abundance, with larger values representing higher relative abundance