Joao M.D. Dalmazo Sanchez1, Joao M.B. Vendramini1, Lynn E. Sollenberger2, Maria Lucia A. Silveira1, Jose C.B. Dubeux Jr.3, Frank Kuwahara4, Ulysses Cecato5, James K. Yarborough1, Fabio Cortez Leite de Oliveira6 and Cecílio Viega Soares Filho7, (1)Range Cattle Research and Education Center, University of Florida, Ona, FL, (2)3105 McCarty Hall B, PO Box 110500, University of Florida, Gainesville, FL, US, (3)North Florida Research and Education Center, University of Florida, Marianna, FL, (4)Department of Animal Sciences, Sao Paulo State University, Botucatu, Brazil, (5)Department of Animal Sciences, State University of Maringa, Maringa, Brazil, (6)Departamento de Zootecnia, Universidade Estadual de Maringa, Maringa, Brazil, (7)Veterinary Medicine, Sao Paulo State University, Aracatuba, Brazil