1. University of Maine Cooperative Extension Orono Maine USA
2. Range Cattle Research and Education Center University of Florida Ona Florida USA
3. North Florida Research and Education Center University of Florida Marianna Florida USA
4. Agronomy Department University of Florida Gainesville Florida USA
5. North Florida Research and Education Center University of Florida Quincy Florida USA
6. Departamento de Zootecnia Universidade Federal do Norte do Tocantins Araguaina Tocantins Brazil