Table 4.

Effects of selenium and probiotics on serum antioxidant capacity of Broilers ¹.

Items 2	Se, mg/kg	Pros, %	T-AOC 5, U/mL	GSH-Px 6, U/mL	SOD 7, U/mL	MDA 8, nmol/mL
I-Se	0.2	0	11.83 c	761.40 b	191.36	3.25
O-Se	0.2	0	14.64 bc	738.30 b	192.00	3.32
I-Se + pros	0.2	0.5	16.44 ab	914.40 a	199.27	2.40
O-Se + pros	0.2	0.5	19.86 a	953.25 a	173.60	3.20
SEM			0.87	28.87	3.80	0.19
Main effect means 3
Se-S	Inorganic		14.13 b	837.90	194.33	2.83
	Organic		16.96 a	833.83	185.10	3.26
	SEM		1.70	57.45	10.26	0.53
Pros		0	13.23 b	749.85 b	191.68	3.29
		0.5	17.96 a	931.67 a	186.44	2.80
		SEM	1.80	60.93	10.26	0.53
p-value
Treatment			0.004	0.005	0.193	0.296
Se-S			0.024	0.853	0.110	0.079
Pros			0.001	0.001	0.483	0.096
Se-S × Pros 4			0.808	0.471	0.095	0.056

¹ Data are means with the SEM derived from ANOVA error mean square for n = 10. ² I-Se, basal diet containing 0.2 mg/kg sodium selenite; O-Se, basal diet containing 0.2 mg/kg selenium yeast; I-Se + pros, basal diet containing 0.2 mg/kg sodium selenite and 0.5% probiotics; O-Se + pros, basal diet containing 0.2 mg/kg selenium yeast and 0.5% probiotics. ³ Se-S, Main effect of selenium source; Pros, Main effect of probiotics; Se-S + Pros, Main effect of selenium source plus probiotics. ⁴ Interaction between Se source and probiotics level. ⁵ T-AOC, total antioxidative capacity; ⁶ GSH-Px, glutathione peroxidase; ⁷ SOD, superoxide dismutase; ⁸ MDA, malonaldehyde. ^a,b,c Means within the same row having different superscripts differ significantly (p < 0.05).