Fig. 1

Influence of the type of breed on the lung microbiota. The influence of the type of breed on the lung microbiota was evaluated by comparison between 5 groups including domestic terrier dogs (T), domestic shepherd dogs (S), domestic brachycephalic dogs (Br), healthy domestic West Highland white terriers (H-WHWTs) and experimental beagles (ExpB). The parameters studied to assess the lung microbiota included; the bacterial load (a), the α-diversity (b), the richness (c), the evenness (d), the β-diversity (e) represented by a non-metric multidimensional scaling (NMDS) graph based on a Bray-Curtis matrix and the linear discriminant analysis (LDA) where only significant genera were represented (f). The distribution of the relative abundance of taxa at the genus level for each dog in each type of breed concerned only genera of more than 0.05% (g). *P = 0.002, **P = 0.001