Table 5.

Serum biochemical index of weaned piglets as affected by dietary mixed organic acids (MOA) and antibiotic growth promoter (AGP) supplementation.

Item	Dietary treatments1					SEM	P-value
	CON	AGP	OA1	OA2	OA3
d 1 to 14
IgG, μg/mL	13.18	12.49	11.59	8.95	12.73	2.11	0.64
IgA, μg/mL	28.11	34.25	27.90	23.20	32.04	4.01	0.38
IgM, μg/mL	14.00	17.00	13.93	10.78	14.95	2.18	0.41
·OH, ng/mL	2.87	2.30	2.36	2.23	2.16	0.33	0.56
T-AOC, U/mL	13.10	14.23	13.57	13.26	13.73	0.97	0.93
GSH-Px, μmol/L	13.00c	13.25bc	13.15c	15.48ab	15.62a	0.52	<0.01
MDA, nmol/mL	1.16	1.10	1.21	1.28	1.17	0.08	0.61
SOD, U/mL	45.71	47.53	44.10	45.27	45.76	0.91	0.17
TNF-α, ng/L	97.37	90.04	90.90	75.84	101.83	13.31	0.70
d 15 to 28
IgG, μg/mL	5.26b	8.00ab	8.14ab	10.07a	8.69ab	0.93	0.03
IgA, μg/mL	19.88	24.05	19.64	26.27	21.16	2.99	0.47
IgM, μg/mL	9.47	11.94	10.17	11.52	11.28	1.21	0.60
·OH, ng/mL	2.32	2.73	2.17	2.19	2.43	0.20	0.31
T-AOC, U/mL	13.35	14.28	13.63	14.82	13.73	0.64	0.53
GSH-Px, μmol/L	16.44	16.70	15.91	15.16	16.79	0.83	0.23
MDA, nmol/mL	1.06	1.18	1.09	1.11	1.11	0.05	0.44
SOD, U/mL	44.64	45.64	44.92	44.44	43.85	0.83	0.65
TNF-α, ng/L	66.96	82.96	65.19	88.88	82.39	8.13	0.20

^{a, b, c} Different letters within a row mean a statistical difference (P < 0.05).

¹CON: control; AGP: chlorinomycin at 75 mg/kg + virginiamycin at 15 mg/kg + guitaromycin at 50 mg/kg; OA1: MOA at 3,000 mg/kg; OA2: MOA at 5,000 mg/kg; OA3: MOA at 7,000 mg/kg.