Pedro Fontes, Ph.D. Assistant Professor and Extension Specialist –

The 2023 sire directories from genetic companies are now available to beef producers. In addition to including a wide variety of new sires, these directories also include updates in their estrus synchronization protocol sheets. These updates include new protocols that are now validated and endorsed by the Beef Reproduction Task Force ( This article will provide an overview of the protocol that was recently added to the list of protocols for use with conventional semen, and summarizes the research that evaluated this protocol in controlled settings. (This article was also printed at the Georgia Cattlemen’s Magazine)