1. Secretariat of Public Health, Jardim do Seridó, Rio Grande do Norte, Brazil.
2. Department of Animal Sciences, Federal Rural University of Semi-Árido, Mossoró, Rio Grande do Norte, Brazil.
3. Department of Veterinary Clinic and Surgery, College of Veterinary Medicine, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.