1. Federal Institute of Education, Science and Technology of Southern Minas Gerais, Machado, Minas Gerais, Brazil
2. Agencia Paulista de Tecnologia dos Agronegócios, Colina, São Paulo, Brazil
3. Department of Animal Science, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
4. Alltech do Brasil, Maringá, Paraná, Brazil
5. Department of Animal Science, Colorado State University, Fort Collins, Colorado, CO