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Journal of Animal and Veterinary Advances
Year: 2012  |  Volume: 11  |  Issue: 14  |  Page No.: 2409 - 2416

Effects of Head-Only Electrical Stunning on the Physico-Chemical Characteristics and Desmin Degradation of Broiler Breast Muscles at Different Time Postmortem

M.S. Salwani, A.Q. Sazili, I. Zulkifli, Z. Nizam and W. Zul Edham    

Abstract: The study aimed to determine physico-chemical characteristics and myofibrillar proteolysis of breast muscles from broiler chickens subjected to head only electrical stunning. Pectoralis major muscles were collected from un-stunned (N = 25) and electrically stunned (N = 25) chickens at a commercial poultry processing plant. All samples were analysed for pH, color values, shear force, cooking loss and desmin degradation at 0, 4 and 24 h postmortem. The head only electrical stunning had significantly improved cooking loss and lightness (L*) of the pectoralis major muscles. Besides, there was a tendency for the stunning regime employed in this experiment to cause more rapid degradation of desmin over the 24 h postmortem storage.

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