Figure 4

The correlations of the corresponding intra-microbial interactions (latent variables) in different intestinal segments with the pre-weaned weight gain. The intra-microbial interactions (latent variables) are presented as the factors (extracted by factor analysis) which represent the inner-correlations inside microbiome data-matrix for the intra-microbial interactions can result in the involved microorganisms correlating with each other. (I) the abundances of the correlated microorganisms in the corresponding intra-microbial interaction; (II) the factor (extracted by factor analysis) which represents the corresponding intra-microbial interaction; (III) the pre-weaned weight gain (kg) of the piglets. *,** and *** means the correlations are significant at p < 0.05, p < 0.01 and p < 0.001 levels, respectively.