Influence of Carcass Position During Rigor Mortis on Tenderness of Beef Muscles: Comparison of two Treatments

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Abstract
Sarcomere lengths in five muscles, taken from one side of eight carcasses suspended by the Achilles tendon, were compared to those in the same muscles taken from the other side, which was suspended from the obturator foramen. Between treatments greater tenderness was obtained in the muscle which had longer sarcomeres. Suspension from the obturator foramen was preferred since it improved the tenderness of the LD and SM muscles while keeping an acceptable tenderness of the PM muscle. The response of the ST muscle was more variable but its tenderness was also generally improved by this technique. The TB muscle was not affected by the treatments. The relationship of actomyosin to the change in tenderness and sarcomere length is discussed. Copyright © 1970. American Society of Animal Science. Copyright 1970 by American Society of Animal Science

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