Date of Award
Doctor of Philosophy
Young turkeys weighing 13.6 kg were electrically stunned for 5 seconds with a current of 250 mA. Samples of the Biceps femoris and Pectoralis major were taken at 0, 4, 8, and 24 hours postmortem. No differences in postmortem muscle structure between stunned and nonstunned muscles were observed in electron micrographs;Electrical stunning did not affect glycogen content of either muscle. Muscle pH and ATP content were higher in stunned muscles at 0 time after processing. After 4 hours, no difference due to stunning was observed;An emulsion product was manufactured using a preblend of the P. major from either stunned or nonstunned turkeys. Though the stunned muscle resembled pre-rigor muscle, there were no differences between the two emulsions;It was concluded that electrical stunning delayed the onset of rigor, as measured by muscle pH, ATP, and adenosine content. However, by 4 hours postmortem, no differences were observed. Secondly, any pre-rigor properties that stunned muscle may have had were not retained during emulsion manufacturing.
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Bernard Davis Murphy
Murphy, Bernard Davis, "Effect of antemortem electrical stunning on avian muscle " (1985). Retrospective Theses and Dissertations. 12089.