1. Department of Animal Sciences, University of Florida, Gainesville, FL
2. Campo Experimental Centro Altos de Jalisco, Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias, Tepatitlán de Morelos, Jalisco, México
3. Department of Large Animal Clinical Sciences, University of Florida, Gainesville, FL
4. Departamento de Medicina Veterinária, Universidade de São Paulo, Pirassununga, São Paulo, Brazil