TABLE 5.

Effects of Clostridium butyricum on the serum antioxidant indices of broilers¹.

Items	CON	CB	ANT	p-value
21 days
T-AOC (U/ml)	0.64 ± 0.05	0.69 ± 0.06	0.66 ± 0.04	0.729
SOD (U/ml)	104.93 ± 7.42	114.27 ± 12.00	117.83 ± 7.87	0.632
MDA (nmol/ml)	2.81 ± 0.06a	2.34 ± 0.04b	2.59 ± 0.09ab	0.010
CAT (U/ml)	8.52 ± 0.29	8.03 ± 0.13	8.39 ± 0.34	0.433
GSH-Px (U/ml)	1,031.87 ± 40.14b	1,247.54 ± 38.68a	986.48 ± 29.95b	0.010
42 days
T-AOC (U/ml)	0.72 ± 0.08b	0.98 ± 0.07a	0.78 ± 0.02b	0.018
SOD (U/ml)	110.98 ± 6.81b	133.99 ± 4.51a	117.57 ± 4.50b	0.024
MDA (nmol/ml)	3.17 ± 0.09a	2.77 ± 0.06b	3.04 ± 0.06a	0.005
CAT (U/ml)	8.27 ± 0.31	8.96 ± 0.43	8.91 ± 0.39	0.387
GSH-Px (U/ml)	1,267.23 ± 39.88b	1,461.22 ± 41.32a	1,301.45 ± 59.37b	0.013

¹Mean values within the same row without similar lowercase letters are significantly different (p < 0.05). Data are presented as the mean ± SE of six replicates.

CON, no additives; CB, basal diet supplemented with 1 × 10⁹ cfu C. butyricum/kg; ANT, basal diet supplemented with 10 mg/kg virginiamycin; T-AOC, total antioxidant capacity; SOD, superoxide dismutase; MDA, malondialdehyde; CAT, catalase; GSH-Px, glutathione peroxidase.