Table 6
Effect of diet and sampling time on serum antioxidants and lipid oxidation (mean ± standard error) in goats

Parameter	Sampling day	Level of CPOBg (%)			P value
		0	4	8	Diet	Diet x sampling day
TBARS (mg MDA/kg)	0	0.39 ± 0.1	0.37 ± 0.1	0.37 ± 0.1	0.57	0.55
	30	0.42 ± 0.0	0.35 ± 0.1	0.28 ± 0.1	0.35
	60	0.35 ± 0.1	0.25 ± 0.1	0.30 ± 0.1	0.53
	90	0.51 ± 0.1	0.39 ± 0.1	0.34 ± 0.1	0.07
	P value	0.38	0.48	0.92	0.78
Glutathione peroxidaseh	0	57.79 ± 2.3	51.80 ± 1.9	52.90 ± 2.2	0.17	0.78
	30	62.14 ± 2.4	57.00 ± 3.2	60.11 ± 1.9	0.44
	60	70.26 ± 2.2	54.22 ± 2.3	61.28 ± 4.2	0.76
	90	68.20 ± 3.3	60.56 ± 3.1	58.22 ± 2.2	0.27
	P value	0.14	0.76	0.67	0.12
Catalasei	0	1500.94 ± 23.4	1450.75 ± 19.24	1543.43 ± 32.3	0.22	0.34
	30	1624.22 ± 27.3	1623.88 ± 28.2	1600.45 ± 33.7	0.18
	60	1550.45 ± 22.1	1601.97 ± 41.4	1673.22 ± 23.5	0.67
	90	1724.45 ± 23.8	1555.29 ± 26.6	1500.78 ± 30.0	0.55
	P value	0.39	0.98	0.43
Superoxide dismutasej	0	2.21 ± 0.1	2.30 ± 0.1	2.21 ± 0.1	0.66	0.19
	30	2.40 ± 0.2	2.37 ± 0.2	2.54 ± 0.2	0.54
	60	2.33 ± 0.1	2.34 ± 0.1	2.34 ± 0.1	0.12
	90	2.43 ± 0.2	2.54 ± 0.2	2.40 ± 0.1	0.32
	P value	0.24	0.45	0.75
α-tocopherol (μg/mL)	0	3.00 ± 0.3	3.20 ± 0.2d	2.90 ± 0.1d	0.63	0.25
	30	3.20 ± 0.2c	3.83 ± 0.2bd	4.22 ± 0.2ae	0.04
	60	3.10 ± 0.2c	4.10 ± 0.1ae	4.67 ± 0.2ae	0.03
	90	3.24 ± 0.3b	4.35 ± 0.3ae	4.80 ± 0.1ae	0.02
	P value	0.10	0.02	0.03
γ-tocopherol (μg/mL)	0	0.60 ± 0.1	0.58 ± 0.1d	0.57 ± 0.1d	0.34	0.22
	30	0.62 ± 0.2	0.68 ± 0.1e	0.72 ± 0.1e	0.54
	60	0.62 ± 0.2a	0.70 ± 0.1be	0.75 ± 0.2be	0.01
	90	0.64 ± 0.2c	0.73 ± 0.2be	0.80 ± 0.3ae	0.02
	P value	0.32	0.04	0.04
δ-tocopherol (μg/mL)	0	0.03 ± 0.0	0.03 ± 0.0d	0.02d ± 0.0	0.62	0.58
	30	0.04 ± 0.0	0.06 ± 0.0e	0.06e ± 0.0	0.50
	60	0.05 ± 0.0	0.05 ± 0.0e	0.06e ± 0.0	0.20
	90	0.04 ± 0.0	0.06 ± 0.0e	0.07e ± 0.0	0.11
	P value	0.11	0.02	0.01
Total carotenoid (μg /mL)	0	0.20 ± 0.0	0.20 ± 0.0d	0.19 ± 0.0d	0.43	0.27
	30	0.20 ± 0.0	0.23 ± 0.0e	0.25 ± 0.0e	0.22
	60	0.21 ± 0.0	0.23 ± 0.0e	0.25 ± 0.0e	0.45
	90	0.21 ± 0.0	0.25 ± 0.0e	0.26 ± 0.0e	0.23
	P value	0.77	0.04	0.03