1. Department of animal science, Federal University of Piauí, Campus Professora Cinobelina Elvas, Bom Jesus, Piauí, Brazil
2. Technical college of Bom Jesus, Federal University of Piauí, Bom Jesus, Piauí, Brazil
3. Department of agriculture and Livestock Aracajú, Federal institute of Sergipe, Aracajú, Sergipe, Brazil
4. Campus do Sertão, Federal university of Sergipe, Sergipe, Brazil
5. Department of veterinary medicine, Federal University of South frontier, Realeza, Paraná, Brazil
6. Centre for nuclear energy and agriculture, Laboratory of animal nutrition, Piracicaba, São Paulo, Brazil