1. Graduate Program in Animal Science, Federal University of Vale do São Francisco, Petrolina, Brazil
2. Graduate Program in Animal Production, Federal University of Rio Grande do Norte, Natal, Brazil
3. Graduate Program in Animal Science, Goiano Federal Institute, Rio Verde, Brazil
4. Graduate Program in Animal Science, Federal University of Mato Grosso do Sul, Campo Grande, Brazil
5. Undergraduate degree in Agronomy, Federal University of Rio Grande do Norte, Natal, Brazil