DCRC webinar highlights current estrous synchronization recommendations

Dairy Cattle Reproduction Council

Dairy Cattle Reproduction Council (DCRC) kicks off its 2019 DCRC webinar series with “Evolution of Timed AI (artificial insemination) Protocols and Overview of the  DCRC Reproductive Management Strategies Protocol Sheet for Dairy Cows.” Presented by Paul Fricke, University of Wisconsin dairy science professor and extension specialist in dairy cattle reproduction, this webinar reviews DCRC’s updated dairy reproduction protocols. The one-hour webinar begins at 2 p.m. Central time on Feb. 15.

While estrous synchronization protocols have helped enhance reproductive success on many dairy farms, there is not one “right way” to approach reproductive management, including “synch” programs. “Many strategies can be implemented to achieve excellent 21-day pregnancy rates by increasing the AI service rate alone,” said Fricke. “Newer fertility programs increase both service rate and pregnancies per AI (P/AI).”

To register for this webinar, go to: www.dcrcouncil.org/webinars and follow the prompts. As the webinar approaches, you will receive an e-mail with information on how to log in and participate. If you are a DCRC member and cannot attend the live program, you may access the webinar at www.dcrcouncil.org.

During 2018, DCRC leaders reviewed and updated DCRC’s recommended list of estrous synchronization protocols. The updated protocols are based on the latest peer-reviewed research published in scientific journals. Presynch strategies that combine gonadotropin release hormone (GnRH) and prostaglandin (PG) F2? increase P/AI by initiating ovulation in anovular cows and by increasing the proportion of cows that synchronize during an Ovsynch protocol. Including a second PGF2? treatment 24 hours after the first in a seven-day Ovsynch protocol increases luteal regression, which increases P/AI – particularly in multiparous cows.

Developing and optimizing fertility programs for first and Resynch timed AI remains an active research area, despite its 20-year history. DCRC’s current synchronization protocol recommendations can be found at: http://www.dcrcouncil.org/protocols.

For more information, e-mail Natalia Martinez-Patino, DCRC education committee chair, at [email protected] or e-mail DCRC at [email protected].

The Dairy Cattle Reproduction Council is focused on bringing together all sectors of the dairy industry – producers, consultants, academia and allied industry professionals – for improved reproductive performance. DCRC provides an unprecedented opportunity for all groups to work together to take dairy cattle reproduction to the next level.

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