1. Faculty of Veterinary Medicine and Animal Science, University of Yucatan, Carretera Merida-Xmatkuil, Itzimna, Merida, Yucatan, Mexico, C.P
2. International Center for Tropical Agriculture (CIAT), Recta Cali-Palmira, Palmira, Valle del Cauca, Colombia, C.P
3. Department of Animal Production, Faculty of Agricultural Sciences, National University of Colombia, Medellin, Medellin, Antioquia, Colombia, C.P