The abundance of bacterial taxonomic groups in horses. The mean percentage of reads assigned to the respective taxonomic group for control and laminitis groups. Taxonomic assignments were based on 16S rRNA sequences using the Ribosomal Database Project classifier in QIIME. (A) Phylum, (B) Class, (C) Order, (D) Family, (E) Genus. *Significant difference between groups (P = 0.03 and 0.01, respectively).