1. Instituto Federal de Educação, Ciência e Tecnologia Goiano Avenida Oeste n. 350 Iporá 76.200-000 Brazil
2. Universidade de Brasília Asa Norte, Campus Darcy Ribeiro, ICC Sul Brasília 70.910-900 Brazil
3. US Department of Agriculture Fort Keogh Livestock and Range Research Laboratory Agricultural Research Service 243 Fort Keogh Road Miles City 59301 USA
4. US Department of Agriculture National Laboratory for Genetic Resources Preservation Agricultural Research Service National Animal Germplasm Program 1111 S Mason St. Fort Collins 80521 USA
5. Department of Animal Sciences Colorado State University 350 W. Pitkin St. Fort Collins 80523-1171 USA
6. US Department of Agriculture Agricultural Research Service US Meat Animal Research Center 844 Rd 313 Clay Center 68933 USA
7. Embrapa Recursos Genéticos e Biotecnologia Parque Estação Biológica, PqEB, Av. W5 Norte (final) Caixa Postal 02372 Brasília 70.770-917 Brazil