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Effect of Breeding, Level of Feeding and Antemortem Injection of Papain on the Tenderness of Weanling Calves¹

Florida Agricultural Experiment Station, Gainesville

Abstract

Loin steaks, rib roasts, kidney and livers from papain-injected cattle were significantly more tender than those from noninjected control cattle. A marked difference in tenderness was found between breed groups. In general, Angus and Angus x Hereford cattle were more tender than other breed groups while Brahman were the least tender. A significant interaction was found between breed group and papain injection, indicating a differential response by breeds to papain injection.

Steaks and roasts from full-fed steers were more tender than those from equalized-fed steers. The effect of level of feeding on tenderness was more pronounced in some breed groups than others as indicated by a significant breed group x feed level interaction.

¹ Florida Agricultural Experiment Stations, Journal Series No. 2083.

² Present Address: Department of Animal Science, Auburn University, Auburn, Alabama.

³ Department of Animal Science, University of Florida, Gainesville.

⁴ Present Address: Department of Animal Science, Wisconsin State University, River Falls, Wisconsin.