Fig. 2

The results of the PLS-DA analysis regarding the faecal microbiota of the sows at the end of lactation. A Individual score plot of the samples along the first two components. B Table reporting the most discriminant genera per group. PC stands for the principal component which discriminates the genera; Diet: CO = the group fed a standard lactating sow diet; Arg = the group fed the standard lactating sow diet plus 22.5 g/d/sow of L-Arg; BCAA = the group fed the standard lactating sow diet plus L-Val, L-Ile and L-Leu at 9, 4.5 and 9 g/d/sow; BCAA + Arg = the group fed the standard lactating sow diet plus L-Val, L-Ile and L-Leu and L-Arg at 9, 4.5, 9 and 22.5 g/d/sow.; value.var expresses the variance explained by the single genera; Freq expresses the frequencies by which the genera were chosen among the 100 repetitions of the cross validation