1. Laboratory of Parasitology, Department of Veterinary Medicine, University of Caxias do Sul. R: Francisco Getúlio Vargas, Caxias do Sul, Brazil
2. College of Animal Science and Food Science, University of São Paulo, Pirassununga, Brazil
3. Centre for Genetic Improvement of Livestock, Department of Animal Biosciences, University of Guelph, Guelph, Canada
4. Laboratory of Epigenetics, Department of Pathology, Federal University of Parana, Curitiba, Brazil
5. Laboratory of Veterinary Clinical Parasitology, Department of Veterinary Medicine, Federal University of Parana, Curitiba, Brazil