Table 6.

Effect of dietary lycopene on liver antioxidase of AA broilers.

Items	Lycopene levels (mg/kg)				SEM	p -value
	0 (Control)	10	20	30		ANOVA	Linear	Quadratic
21 days
GSH-Px (U/mg prot)	1.25c	3.33b	2.72b	5.40a	0.38	<0.001	0.236	0.007
SOD (U/mg prot)	324.27c	450.74b	465.10b	534.79a	18.86	<0.001	<0.001	<0.001
T-AOC (U/mg prot)	55.45	62.89	63.98	63.83	1.79	0.282	0.102	0.149
MDA (nmol/mg prot)	1.08a	0.75b	0.70b	0.85b	0.04	0.004	0.066	0.001
42 days
GSH-Px (U/mg prot)	10.76b	13.44ab	12.39b	14.43a	0.35	<0.001	<0.001	0.002
SOD (U/mg prot)	1,193.48	1,287.92	1,312.97	1,383.39	52.57	0.550	0.153	0.354
T-AOC (U/mg prot)	58.52	53.41	54.26	61.95	1.65	0.230	0.461	0.110
MDA (nmol/mg prot)	0.68a	0.48b	0.45b	0.53b	0.03	0.002	0.040	<0.001

GSH-Px, glutathione peroxidase enzyme; SOD, superoxide dismutase, T-AOC, total antioxidant capability, MDA, malondialdehyde.

^{a, b, c}Means within a row with no common superscripts differ significantly (p < 0.05).