1. Animal Sciences Department Federal University of Ceará Fortaleza Brazil
2. Faculty of Agricultural and Veterinary Sciences of Jaboticabal. Animal Sciences Department I São Paulo State University “Júlio de Mesquita Filho” Jaboticabal Brazil
3. Brazilian Agricultural Research Corporation – EMBRAPA Embrapa Caprinos e OvinosEstrada Sobral/Groaíras Sobral Brazil
4. National Council for Scientific and Technological Development – CNPq Lago Sul Brazil