Effects of MGM-P supplementation on the intestinal morphology of weaned piglets. Abbreviations: VH:CD, villus height/crypt depth; Control, control group; 0.2 MGM, 0.2% MGM-P group; 0.3 MGM, 0.3% MGM-P group. Values are expressed as mean ± SEM; n = 4. Different lowercase letters above the bars indicate significant differences (p < 0.05; Tukey HSD test). (A) comparison of villus height in different groups (duodenum, jejunum and ileum); (B), comparison of crypt depth in different groups (duodenum, jejunum and ileum); (C) the ratio of villus height to crypt depth in different groups (duodenum, jejunum and ileum); (D) comparison of mucosal thickness in different groups (duodenum, jejunum, ileum and colon).