1. The effects of post-mortem electrical stimulation and muscle tensioning in two broiler muscles.
- Author
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Walker LT, Birkhold SG, Kang IS, Hirschler EM, and Sams AR
- Subjects
- Animals, Food Handling, Male, Muscle Fibers, Skeletal physiology, Sarcomeres physiology, Time Factors, Chickens physiology, Electric Stimulation, Muscle Contraction physiology, Muscle, Skeletal physiology, Postmortem Changes
- Abstract
High voltage post-mortem electrical stimulation (ES) and muscle tensioning during chilling (MT) were applied to broiler carcasses to determine the effect of this combined treatment on absorbance ratio (R- value), sarcomere shortening, and myofibrillar fragmentation in muscles of differing fiber type composition. The ES + MT treatment resulted in a greater effect on these three parameters in the posterior Latissimus dorsi (predominantly twitch-glycolytic) than in the anterior L. dorsi (predominantly tonic-oxidative). The differing responses of these two muscles to the ES + MT treatment combination may be useful in explaining the effects of rigor-accelerating treatments such as ES + MT in avian and mammalian muscles.
- Published
- 1996
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