Artificial insemination at 56 h after intravaginal progesterone device removal improved AI pregnancy rate in beef heifers synchronized with five-day CO-Synch + controlled internal drug release (CIDR) protocol
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PII: S0093-691X(11)00654-6
doi:10.1016/j.theriogenology.2011.12.007
© 2012 Elsevier Inc. All rights reserved.
