Fig. 5.

Distance-based redundancy analysis (db-RDA) triplot showing the association between faecal microbiota variation and environmental variables. A, B Focusing on samples from pre-weaning (day 12 and day 26), C, D samples from post-weaning (day 33, day 47 and day 61). Colours represent different housing conditions (conventional housing: CH; enriched housing: EH) and shapes show different sex. Dark grey arrows indicate environmental variables and light grey arrows ASVs for which the model provided the best fit for the observed variation. The factor time (Days) was taken as the conditional variable in db-RDA analysis