Table 3.

Effects of weaning on antioxidant enzymes activities and MDA content in jejunum of piglets

	Day postweaning
Items	0	1	3	7	SEM1
SOD2 (U/mg protein)	222.57a	181.21ab	123.24b	115.83b	23.83
GSH-Px3 (U/mg protein)	166.36a	158.05a	75.52b	97.54b	8.61
MDA4 (nmol/g protein)	0.45b	0.72ab	1.07a	0.94a	0.15

^a,bMeans within a row with different letters differ significantly (P < 0.05).

¹Standard error of means, n = 6.

²SOD = superoxide dismutase.

³GSH-Px = glutathione peroxidases.

⁴MDA = malondialdehyde.