William Narvaez- Solarte, Horacio Santiago Rostagno, Paulo Rubens Soares, Marcelo A. Silva and Luis Fernando Uribe- Velasquez
International Journal of Poultry Science 4 ( 12 ): 965 - 968 , 2005
William Narvaez- Solarte, Horacio Santiago Rostagno, Paulo Rubens Soares, Luis F. Uribe- Velasquez and Marcelo A. Silva
International Journal of Poultry Science 5 ( 2 ): 181 - 184 , 2006