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Table 4 Reflective density of myofibrillar proteins in infraspinatus (IS) and gluteus medius (GM) muscles in goats during postmortem chill storage

From: Comparison of myofibrillar protein degradation, antioxidant profile, fatty acids, metmyoglobin reducing activity, physicochemical properties and sensory attributes of gluteus medius and infraspinatus muscles in goats

   Storage time (days) P value
Parameter Muscle 0 4 7 Storage Storage × muscle
Fast MHC1 (density/mm2) IS 26.54 ± 0.120ax 23.00 ± 0.209bx 20.49 ± 0.231cx 0.004 0.091
  GM 94.33 ± 0.100ay 88.44 ± 0.707by 81.20 ± 0.309cy 0.023  
  P value 0.001 0.002 0.001   
% loss of fast MHC IS   13.33 ± 0.900by 22.61 ± 2.110ay 0.009 0.09
  GM   6.24 ± 0.001bx 13.91 ± 0.148ax 0.012  
  P value   0.021 0.033   
Slow MHC1 (density/mm2) IS 100.01 ± 4.011ay 85.00 ± 2.991by 63.44 ± 3.311cy 0.001 0.102
  GM 24.10 ± 0.122ax 20.30 ± 2.00bx 17.00 ± 2.121cx 0.001  
  P value 0.009 0.011 0.001   
% loss of slow MHC IS   15.00 ± 0.020b 36.56 ± 2.067ay 0.032 0.110
  GM   15.76 ± 0.341b 29.16 ± 2.019ax 0.016  
  P value   0.130 0.002   
Actin (density/mm2) IS 13.76 ± 0.400x 13.50 ± 1.207x 13.40 ± 0.610x 0.100 0.102
  GM 21.00 ± 0.211y 20.69 ± 0.144y 20.50 ± 0.201y 0.120  
  P value 0.009 0.021 0.018   
% loss of actin IS   1.16 ± 0.001 2.61 ± 0.863 0.091 0.087
  GM   1.47 ± 0.001 2.38 ± 0.152 0.070  
  P value   0.114 0.185   
  1. a, b c means having different superscripts along the same row are significantly different (P < 0.05). x, y means with different superscript along the same column are significantly different (P < 0.05). 1myosin heavy chain