The effects of capsulized FMT on the number of diarrhoeal piglets and colonic measurement. A The number of diarrhoeal piglets in the FMT group was significantly less than that in the control group. B Colon length was increased after the capsulized FMT treatment of piglets; C piglets treated with capsulized FMT had a lower histological score than piglets in the control group; D serial sections of colon tissues were stained with H&E, original magnification 100× (red arrows indicate colon mucosal bleeding, black arrows indicate inflammatory cell infiltration). CON: control group. FMT: faecal microbiota transplantation. The data are expressed as the mean ± SEM. a, b represents significant differences between two groups (n = 16 per group for A and B; n = 10 per group for C).