Table 7.

The serum anti-oxidative parameters after indicated treatments¹

	Medicated groups			Vaccinated groups			P value
Met2 concentrations:	0.45%	0.56%	0.68%	0.45%	0.56%	0.68%	Anticoccidial program	Met levels	Anticoccidial program × Met levels
GPx (U/mL)	1285.26 ± 172.80b	1392.71 ± 194.74a	1321.81 ± 186.24ab	1240.43 ± 157.82b	1266.49 ± 160.72b	1265.93 ± 161.22b	0.042	0.038	0.021
MDA (nmol/mL)	6.93 ± 0.72e	8.62 ± 0.89c	10.64 ± 1.11a	7.74 ± 0.99d	8.66 ± 1.19c	9.40 ± 1.34b	0.102	0.015	0.207
T-AOC (mmol Trolox)	9.55 ± 1.07b	10.36 ± 1.96a	9.85 ± 1.53ab	8.46 ± 0.93c	8.77 ± 1.01bc	8.79 ± 1.17bc	0.023	0.032	0.035

¹An anticoccidial drug (narasin, 60 mg/kg diet) was added to diets in medicated groups, and an anticoccidial 7-valent live vaccine was inoculated in vaccinated groups

²Met methionine, GPx glutathione peroxidase, MDA malondialdehyde, T-AOC total antioxidant capacity

^a,b,c,d,eThe data of the same row not sharing a lowercase letter differ (P < 0.05, n = 30)