Table 1.

Morphological changes in the small intestine of pigs after weaning.

Weaning age (day)	Intestinal section	Results	References
21	Small intestine	Decreased villus height and increased crypt depth during day 11 post-weaning	(5)
21 or 35	Jejunum	Decreased villus height during day 3 post-weaning when weaned at 21 or 35 day	(23)
14	Small intestine	Decreased villus height to crypt depth ratio at day 7 post-weaning	(24)
28	75% of small intestine	Increased crypt depth at day 5 post-weaning	(25)
26	Small intestine	Decreased villus height at day 2 and 4 and decreased villus height to crypt depth ratio at day 2 and 4 post-weaning	(12)
29	Jejunum	Decreased villus height from day 2 post-weaning with minimal length was observed at day 3 post-weaning and increased crypt depth at day 5 post-weaning	(26)
21	Jejunum	Decreased villus height from day 2 post-weaning and increased crypt depth from day 5 post-weaning.	(27)