Effects of capsulized FMT on the alpha diversity and structure of gut microbiota in piglets. A Chao 1 index calculated after rarefying to an equal number of sequence reads for all samples. The Chao 1 index was increased after FMT treatment; B The PCoA score based on weighted UniFrac metrics was significantly different in both groups. The data are expressed as the mean ± SD for (A), *P < 0.05. Statistically significant differences were assessed through AMOVA analysis for (B) *P < 0.001. In (A, B), CTL: control group (n = 12). FMT: faecal microbiota transplantation (n = 12).