Effects of FMT and succinate on diarrhea in piglets. a Schematic design. b-d Diarrhea score (b), fecal water content (c) and succinate concentration (d) in diarrheal piglets transplanted with feces collected from healthy piglets or diarrheal piglets. n = 6, Data are represented as mean ± SEM. *P < .05, determined by one-way ANOVA. Saline to DG, diarrheal piglets were administrated with saline; HG to DG, feces were transplanted from healthy piglets to diarrheal piglets; DG to DG, feces were transplanted from diarrheal piglets to diarrheal piglets. e Schematic design. f Diarrhea score of healthy piglets treated with succinate through rectal administration. n = 6, Data are represented as mean ± SEM. *P < .05, determined by two-tailed Student’s t-test. g Schematic design. h, i Diarrhea score (h) and succinate concentration (i) in diarrheal piglets transplanted with heat-inactivated feces collected from healthy piglets or diarrheal piglets. n = 6, Data are represented as mean ± SEM. *P < .05, determined by one-way ANOVA. HG-HFMT, heat-inactivated feces were transplanted from healthy piglets to diarrheal piglets; DG-HFMT, heat-inactivated feces were transplanted from diarrheal piglets to diarrheal piglets.