Table 6.

The relative protein abundances of claudin-1, claudin-3, occludin and ZO-1 in the jejunum and ileum of suckling and weaned piglets

Items	Day age				Day post-weaning				SEM	P-value
Items	1	7	14	21	1	3	5	7	SEM	P-value
Jejunum mucosa
Claudin-1	1.00^c	1.19^c	1.31^c	6.96^a	0.89^c	0.83^c	2.03^bc	4.52^b	0.261	<0.001
Claudin-3	1.00^c	1.93^c	11.01^b	25.91^a	12.24^b	2.76^c	11.11^b	13.62^b	1.761	<0.001
Occludin	1.00^c	2.12^b	2.23^b	3.10^a	0.51^d	1.50^c	0.87^d	2.57^ab	0.147	<0.001
ZO-1	1.00^c	0.83^c	3.08^a	3.90^a	1.71^b	1.33^bc	0.55^c	1.83^b	0.237	<0.001
Ileum
Claudin-1	1.00^b	0.72^b	0.79^b	1.43^ab	1.39^ab	0.98^b	2.19^a	1.27^ab	0.206	0.010
Claudin-3	1.00	0.89	1.08	1.38	1.02	0.67	0.72	1.26	0.175	0.134
Occludin	1.00^bc	1.47^ab	1.42^b	1.93^a	0.72^c	0.86^c	1.62^ab	1.89^a	0.142	<0.001
ZO-1	1.00^a	0.88^ab	1.05^a	0.86^ab	0.68^bc	0.33^c	0.42^bc	1.05^a	0.089	<0.001

ZO-1 Zonula occludens

The jejunum and ileum were obtained from 1, 7, 14, 21-d-old suckling piglets and piglets on days 1, 3, 5, 7 post-weaning at 14 d of age

n = 8. ^a-dValues with different letters within the same row are different (P < 0.05)