By H. Russell Cross,[1] E. Curtis Green,[2] William R. Jones,[3]
Roger L. West,[4] and Anthony W. Kotula[1] (Photographs by
Donald K. Rough[1] and Terry K. O’Driscoll[5])
[1] Meat Science Research Laboratory, Agricultural Research Service,
Beltsville, Md. 20705.
[2] Standardization Branch, Livestock Division, Agricultural
Marketing Service, Washington, D.C. 20250.
[3] Present address: Cooperative Extension Service, Auburn
University, Auburn, Ala. 36830. Employed at Pennsylvania State
University, University Park, Pa., when work was initiated.
[4] Department of Animal Science, University of Florida, Gainesville,
Fla. 32611.
[5] Beltsville Agricultural Research Center, Agricultural Research
Service, Beltsville, Md. 20705.