McNay Research and Demonstration Farm
The objective of this study was to determine how real-time ultrasound (RTU) measurements would compare with carcass measurements to predict the percentage of lean from the four primals (PERL4P).
Iowa State University
Tait, Richard G. Jr.; Rouse, Gene H.; and Wilson, D. E., "Comparison of Ultrasound and Carcass Measures to Predict the Percentage of Lean Beef from Four Primal Cuts – A Progress Report" (2002). Iowa State Research Farm Progress Reports. 1599.