Fig. 2

The cladogram presenting the phylogenetic distribution of the lineages for cecal microbiota of broiler breeder roosters in different groups. The lineages in the values of least discriminant analysis higher than 3.5 are displayed. C was defined as the cecal microbiota from broiler breeder rooster fed with basal diet. N was defined as the cecal microbiota from broiler breeder rooster fed with basal diet supplemented with 0.08% N-Carbamylglutamate. The different color nodes represent microbial groups that are significantly enriched in the corresponding groups and have a significant influence on the differences between the groups. Pale yellow nodes indicate microbial taxa that do not differ significantly in different groups or do not significantly influence differences between groups. When the number of species with significant differences is ≤ 50, the legend position is displayed in one column, and when the number of species with significant differences is > 50, the legend position is displayed in two columns when the number of species with significant differences is shown on the right.