1. Faculty of Agriculture and Veterinary Sciences, São Paulo State University, Jaboticabal, São Paulo, Brazil (Batista, Almeida, Barbosa, Berchieri Jr)
2. Agronomical Science Centre, Federal University of Paraíba, Campus II, Areia, Paraíba, Brazil (Freitas Neto)
3. School of Veterinary Medicine and Science, University of Nottingham, Sutton Bonington, Leicestershire, United Kingdom (Barrow)