Figure 4

Association between the MHC line and the caecal microbial beta-diversity in laying hens one week after their infection with IBV. NMDS representation of the caecal microbial communities using Bray–Curtis distances among the different MHC lines in the (a) vaccinated and challenged (V-Ch, n = 48) and in the (b) non-vaccinated and challenged (NV-Ch, n = 45) groups. Representation of the community dispersion in each MHC-line through its β-diversity among (c) the total population, (d) the vaccinated challenged (V-Ch) group, and (e) the non-vaccinated challenged (NV-Ch) group. We indicated the p-value of the line effect. Asterisks indicate a significant difference between two lines based on post-hoc comparison.