Evaluation of the 7 & 7 Synch and 7-day CO-Synch + CIDR protocols for estrus synchronization of beef cows prior to fixed-time artificial insemination with conventional or sex-sorted semen
C. M. Andersen, R. C. Bonacker, E. G. Smith, C. M. Spinka, S. E. Poock, J. M. Thomas
This study compares two estrus synchronization protocols in beef cows, finding that 7 & 7 Synch improves estrus expression and pregnancy rates compared to 7-day CO-Synch + CIDR, especially with sex-sorted semen.
bioRxiv · Aug 25, 2020Physiology