1. Department of Animal Production and Food Science; Instituto Agroalimentario (IA2), Universidad de Zaragoza - CITA; C/Miguel Servet, 177 50013 Zaragoza Spain
2. Department of Animal Science; Universidade Estadual de Maringá; Av. Colombo, 5790, 87020-900 Maringá Paraná Brazil
3. Department of Animal Science; Universidade Federal do Paraná; C/Funcionários, 1540 80035-050 Curitiba Paraná Brazil