Table 1. Effects of chitosan oligosaccharide supplementation on the amniotic fluid antioxidant status of sows^a.

Items	Treatmentsb		P-value
	CON	COS
SODc (U/mL)	60.26 ± 4.80	69.07 ± 6.46*	0.023
CATd (U/mL)	3.61 ± 0.60	5.22 ± 0.53**	<0.001
ASAe (U/L)	89.29 ± 1.86	104.68 ± 6.44**	0.005
AHRf (U/mL)	398.23 ± 12.72	426.41 ± 14.15*	0.011
T-AOCg (U/mL)	2.64 ± 0.16	3.26 ± 0.59*	0.048
GSHh (mg/mL)	0.29 ± 0.06	0.31 ± 0.06	0.598
MDAi (nm/mL)	4.90 ± 0.71	4.56 ± 0.56	0.386

^*P < 0.05 versus the CON group. ^**P < 0.01 versus the CON group.

^aValues are means of six replications per treatment.

^bCON: A corn–soybean basal diet; COS: Chitosan oligosaccharide (the basal diet supplemented with 100 mg/kg chitosan oligosaccharide).

^cSOD: Superoxyde dismutase.

^dCAT: Catalase.

^eASA: Anti-superoxide anion.

^fAHR: Anti-hydroxyl radical.

^gT-AOC: Total antioxidant capacity.

^hGSH: Glutathione.

ⁱMDA: Malondialdehyde.