VALENCIA MÉNDEZ, J., PORRAS ALMERAYA, A., ZARCO QUINTERO, L. A., & CERNA CABRERA, C. (2009). Effect of an artificial photoperiod on the resumption of postpartum ovarian activity in Pelibuey ewes in Mexico. Veterinaria México OA, 35(003). Retrieved from https://veterinariamexico.fmvz.unam.mx/index.php/vet/article/view/114