TI - Effects of different ovulatory stimulus (GnRH vs. estradiol cypionate) on follicular dynamics of a progesterone-based timed AI protocol in Holstein cows PY - 2010 AU - Ferreira, R. M AU - Ayres, H AU - Gimenes, L. U AU - Baruselli, Pietro Sampaio T2 - JAM: Joint Annual Meeting J2 - Journal of Animal Science; Journal of Dairy Science; Poultry Science SN - 0021-8812 PP - Albany VL - 88 SP - 676 res. W281 VL - 2010 93 SP - 676 res. W281 VL - 2010 89 SP - 676 res. W281 ER -