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Two experiments were conducted to examine the necessity of adding a GnRH injection to a 14-d controlled internal drug release (CIDR)-based protocol for synchronization of estrus and ovulation in postpartum beef cows. The experiments were designed to characterize long-term CIDR-based protocols in...

Nash, J. M.; Mallory, D. A.; Ellersieck, M. R.; Poock, S. E.; Smith, M. F.; Patterson, D. J.
American Society of Animal Science, Savoy, USA
Journal of Animal Science, 2013, 91, 7, pp 3168-3176