Table 3.

Effect of L. johnsonii on muscle antioxidant ability of CP-induced chickens¹

Item	Control	CP	L-LJ	H-LJ	Pooled SE	P-value
Breast
SOD, U/mg protein	51.33	49.28	50.08	50.01	0.31	0.137
CAT, U/mg protein	6.31a	5.88c	6.01b	6.20a	0.03	<0.001
GSH-Px, U/mg protein	59.07	56.08	57.22	58.01	0.63	0.395
MDA, nmol/mg protein	1.61c	1.92a	1.75b	1.69bc	0.02	<0.001
Thigh
SOD, U/mg protein	54.76	53.22	54.11	53.98	0.38	0.559
CAT, U/mg protein	6.66a	6.15c	6.33b	6.31b	0.03	<0.001
GSH-Px, U/mg protein	66.77	64.98	65.08	65.11	0.28	0.066
MDA, nmol/mg protein	1.44c	1.79a	1.61b	1.62b	0.02	<0.001

^a,bMeans in the same row with different superscripts are significantly different. (P < 0.05)

¹control = basal diet + PBS; CP = basal diet + CP administration; L-LJ = basal diet with 1.0 × 10⁵ cfu BS15/g diet + CP administration; H-LJ = basal diet with 1.0 × 10⁶ cfu BS15/g diet + CP administration

¹n = 12 per treatment group