Effect on Pregnancy Rate of a Previously Used Progesterone-Releasing Device and Fixed Time Artificial Insemination in Brahman Cows

G. Martinez, P. Perez, G. Torres, O. Hernandez, J.J. Martinez-Tinajero, O.D. Montanez-Valdez, M.E. Ortega-Cerrilla and R. Rojo-Rubio

Journal of Animal and Veterinary Advances 10 ( 3 ): 307 - 310 , 2011