1. USDA, ARS, Roman L. Hruska U.S. Meat Animal Research Center, Clay Center, NE
2. Department of Animal Science, University of Wyoming, Laramie, WY
3. Department of Animal and Poultry Sciences, Virginia Tech, Blacksburg, VA
4. USDA, ARS, Range Sheep Production Efficiency Research Unit, U.S. Sheep Experiment Station, Dubois, ID