Morphometric characteristics in the ascending colon of weaned piglets¹.

1Ninety-six 26 day weaned Landrace piglets were randomly allocated into three diets with low, medium and high dietary zinc (57, 164, and 2425 mg/kg diet from ZnO). Eight piglets in each group were killed at the age of 33±1, 40±1, 47±1 and 54±1 d. Data were analyzed by two-way ANOVA followed by Tukey post hoc test. The data were given as mean values. LZn: low dietary zinc; MZn: medium dietary zinc; HZn: high dietary zinc; CD: crypt depth; CA: crypt area. abMeans with different superscripts within a row indicate significant differences between groups (P<0.05).