Table 3
Antioxidant status, protein degradation and lipid oxidation in infraspinatus (IS) and gluteus medius (GM) muscles in goats during postmortem chill storage

		Storage time (days)				P value
Parameter	Muscle	0	1	4	7	Storage	Storage × muscle
α-tocopherol (mg/kg)	IS	2.19 ± 0.130a	2.01 ± 0.100b	1.43 ± 0.061c	1.16 ± 0.020c	<.0001	0.192
	GM	2.14 ± 0.111a	1.93 ± 0.120b	1.40 ± 0.032c	1.23 ± 0.040c	0.0012
	P value	0.217	0.140	0.223	0.123
γ-tocopherol (mg/kg)	IS	0.69 ± 0.051a	0.65 ± 0.052a	0.41 ± 0.010b	0.23 ± 0.020c	<.0001	0.237
	GM	0.70 ± 0.022a	0.65 ± 0.021a	0.44 ± 0.040b	0.27 ± 0.010c	<.0001
	P value	0.532	0.112	0.267	0.417
δ-tocopherol (mg/kg)	IS	0.08 ± 0.011	0.08 ± 0.012	0.07 ± 0.011	0.07 ± 0.011	0.109	0.280
	GM	0.12 ± 0.031	0.10 ± 0.011	0.09 ± 0.021	0.09 ± 0.031	0.204
	P value	0.211	0.234	0.091	0.094
Total carotenoid (mg/kg)	IS	0.27 ± 0.010a	0.23 ± 0.011a	0.18 ± 0.012b	0.11 ± 0.010c	<.0001	0.447
	GM	0.25 ± 0.030a	0.22 ± 0.012a	0.15 ± 0.041b	0.10 ± 0.030c	0.004
	P value	0.901	0.548	0.071	0.361
Catalase1	IS	1828.9 ± 27.23y	1820.0 ± 20.83y	1844.2 ± 21.91y	1816.3 ± 26.80y	0.190	0.135
	GM	1666.2 ± 11.80x	1767.0 ± 10.20x	1515.2 ± 12.11x	1700.2 ± 17.10x	0.219
	P value	0.012	0.009	0.034	0.022
SOD2	IS	3.14 ± 0.161y	3.07 ± 0.121y	3.31 ± 0.212y	3.17 ± 0.05y	0.742	0.221
	GM	2.70 ± 0.132x	2.45 ± 0.143x	2.87 ± 0.111x	2.78 ± 0.05x	0.092
	P value	0.030	0.002	0.043	0.012
GPX3	IS	66.75 ± 2.621	63.42 ± 3.500	65.03 ± 2.772	63.01 ± 0.940	0.806	0.156
	GM	65.20 ± 1.600	59.89 ± 1.250	63.11 ± 2.112	62.22 ± 1.332	0.418
	P value	0.190	0.090	0.301	0.128
TBARS (mg MDA/kg)	IS	0.12 ± 0.010c	0.15 ± 0.011c	0.19 ± 0.010b	0.28 ± 0.010a	<.0001	0.173
	GM	0.11 ± 0.010c	0.13 ± 0.020c	0.18 ± 0.030b	0.26 ± 0.031a	<0.001
	P value	0.130	0.273	0.112	0.367
Carbonyl (nmol/mg protein)	IS	1.08 ± 0.041a	1.43 ± 0.130a	2.47 ± 0.291b	3.63 ± 0.120cx	<.0001	0.451
	GM	1.09 ± 0.010a	1.35 ± 0.120a	2.50 ± 0.122b	3.01 ± 0.221cy	<.0001
	P value	0.231	0.154	0.347	0.035
Free thiol (nmol/mg protein)	IS	52.89 ± 1.671a	49.75 ± 1.302a	45.91 ± 1.380b	39.25 ± 1.711c	0.014	0.234
	GM	55. 82 ± 1.220a	52.86 ± 1.112a	48.00 ± 1.091b	41.01 ± 1.000c	0.021
	P value	0.213	0.437	0.815	0.200