1. Graduate Program in Ecology at University of Campinas, Institute of Biology, Campinas, Brazil
2. Faculty of Philosophy, Sciences and Letters of Ribeirão Preto of the University of São Paulo, Ribeirão Preto, Brazil
3. Department of Animal Science, São Paulo State University "Júlio de Mesquita Filho”, School of Agricultural and Veterinarian Sciences, Jaboticabal, Brazil
4. Department of Basic Sciences, Faculty of Animal Science and Food Engineering, University of São Paulo, Pirassununga, Brazil