1. USDA Agricultural Research Service, Fort Keogh Livestock and Range Research Laboratory, Miles City, MT 59301, USA.
2. USDA Agricultural Research Service, Beltsville Agricultural Research Center, Beltsville, MD, 20705, USA.
3. Instituto Federal de Educação, Ciência e Tecnologia Goiano, Campus Rio Verde, Rio Verde, Goias, Brazil, 76200-000.
4. USDA, Agricultural Research Service, US Meat Animal Research Center, Clay Center, 68933, USA.
5. National Animal Germplasm Program, USDA, Fort Collins, CO, 80521, USA.