Fig. 6

Correlations between microbiota abundances (top 20 genera) and differential metabolite concentrations in weaned piglets with normal birth weight (NBW) and intrauterine growth retardation (IUGR) (n = 11 or 12). A, B, C, and D represent the groups, including N_c vs. N_b, N_b vs. I_b, N_c vs. I_c, and I_c vs. I_b groups, respectively. ^*P < 0.05, ^**P < 0.01. The red indicates a positive correlation, and blue indicates a negative correlation. N_c NBW group (NBW piglets fed a basal diet), I_c IUGR group (IUGR piglets fed a basal diet), N_b NBW + BA group (NBW piglets fed a basal diet supplemented with 400 g/t BA), I_b IUGR + BA group (IUGR piglets fed a basal diet supplemented with 400 g/t BA)