Additional file 15 of From predisposition to recovery: field evidence of interactions between the gut microbiota and Brachyspira hyodysenteriae infection

Additional file 15. Analysis of microbiota species composition in non-diseased and diseased pigs: comparison between pre-SD and post-SD samples. A Alpha diversity. Results of richness, Shannon, Pielou and Simpson indexes by farm and dysentery status in non-diseased and B in diseased pigs. ns P > 0.05, *P ≤ 0.05, **P ≤ 0.01, ***P ≤ 0.001, ****P ≤ 0.0001 (Wilcoxon test or ANOVA and Tukey tests, with Holm adjustment). C Beta diversity. NMDS ordination using Bray-Curtis distances in non-diseased and D diseased pigs. Boxplots indicate the distance to the centroid of each sample per dysentery variable according to the farm. ns P > 0.05, *P ≤ 0.05, **P ≤ 0.01, ***P ≤ 0.001 (Wilcoxon test or ANOVA and Tukey tests, with Holm adjustment). Ellipses represent covariance for each dysentery status according to the farm. The 30 species with the highest mean abundance and significant BH-adjusted P-value (by “envfit” model) are represented by arrows which pinpoint the sample ordination. The length of the arrow represents the strength of influence on the ordination (proportional to the R2 statistic by the “envfit” model). E Species significantly increased or decreased (P < 0.05, log2FC > 1; BH-adjusted P-value) in the post-SD compared to pre-SD samples in non-diseased and F diseased pigs.