1 Department of Veterinary Medicine, School of Animal Science and Food Engineering, University of Sao Paulo, Av. Duque de Caxias Norte, 225, Pirassununga, São Paulo, 13635-900, Brazil.
2 Department of Veterinary Clinical and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
3 Department of Animal Sciences, School of Animal Science and Food Engineering, University of São Paulo, Pirassunung, Sao Paulo, Brazil.
4 Department of Animal Sciences, ESALQ, University of Sao Paulo, Piracicaba, Sao Paulo, Brazil.
5 Department of Veterinary Medicine, School of Animal Science and Food Engineering, University of Sao Paulo, Av. Duque de Caxias Norte, 225, Pirassununga, São Paulo, 13635-900, Brazil. fukumasu@usp.br.