Oklahoma Farm Report masthead graphic with wheat on the left and cattle on the right.
Howdy Neighbors!
Ron Hays, Director of Farm and Ranch Programming, Radio Oklahoma Ag Network  |  2401 Exchange Ave, Suite F, Oklahoma City, Ok 73108  |  (405) 601-9211


Agricultural News

OSU's Dr. Dan Stein with part 2 of Estrus Synchronization

Tue, 25 May 2021 08:46:49 CDT

OSU's Dr. Dan Stein with part 2 of Estrus Synchronization Dr. Dan Stein, Oklahoma State University Department of Animal and Food Sciences, offers herd health advice as part of the weekly series known as the "Cow Calf Corner" published electronically by OSU experts.. Today Stein is talking about Estrus Synchronization - Part 2

Choosing an estrus synchronization protocol that can be used with either AI or with natural service can be perplexing, as a number of synchronization protocols are available. To assist cattle producers in determining an effective estrus synchronization protocol, the Beef Reproduction Task Force provides recommendations for estrus synchronization protocols to be used in either cows or heifers and these protocol recommendations are reviewed annually by the Task Force. The current protocol recommendations are found at the Applied Reproductive Strategies in Beef Cattle website at .

For synchronization protocols recommended by the Beef Reproduction Task Force; it is suggested that mature cows be in a BCS 5 or greater and at least 50 days or more postpartum at the time of insemination. Recent studies suggest that beef heifers with a body condition score?=?6 and reproductive tract score ??4 are more likely to become pregnant to artificial insemination. Three primary groups of products are used to synchronize estrus or ovulation in beef cattle: prostaglandin F2? (PG), progestins (progesterone) and gonadorelins (gonadotropin-releasing hormone; GnRH). Producers should visit with a veterinarian about the products used for synchronization as a current veterinary-client-patient-relationship (VCPR) will be necessary before these products can be purchased. In all cases, be sure to use the correct synchronization product at the recommended time and follow Beef Quality Assurance practices when administering the products.

When trying to decide which protocol to use, one must remember that there are protocols that will synchronize estrus (standing heat) which are designed to synchronize the expression of behavioral estrus into a 3-to-7-day time period. There are other protocols that will synchronize ovulation within estrus; these protocols are used for Fixed-Time Artificial Insemination. The Fixed-Time AI (FTAI) protocols do allow the producer to utilize a limited estrus detection protocol or a no-estrus detection protocol.

The use of sexed semen can result in a decreased conception rate when compared to the use of conventional semen used in similar conditions and situations. Sexed semen can be used on any female observed in estrus (standing heat) and synchronized with any heat detection protocol on the Task Force protocol sheet for conventional semen. It is recommended to use sexed semen on females that have exhibited estrus (standing heat) before FTAI and conventional semen on females that have not exhibited estrus (standing heat) at the prescribed time for breeding listed on the FTAI protocol. Th use of estrus detection aids for detecting females in estrus and for best results perform AI 16 to 22 hours after detecting the female in estrus. Synchronization systems used in Bos taurus breeds of cattle do not yield consistently similar results as in Bos indicus type cattle. The Task Force have listed modified protocols recommended for use in Bos indicus type cattle.   

Drs. Mark Johnson and Dan Stein discuss the benefits of estrus synchronization on Sunup. <http://sunup.okstate.edu/category/ccc/2021/052221-ccc>



WebReadyTM Powered by WireReady® NSI


Top Agricultural News

  • Oklahoma Grain Elevator Cash Bids as of 2 p.m. Wednesday, September 22, 2021  Wed, 22 Sep 2021 15:53:48 CDT
  • During Fair Season, Animal Health is Imperative Locally and Globally  Wed, 22 Sep 2021 15:47:27 CDT
  • Congressman Frank Lucas Describes $3.5 Trillion Budget Plan as Haphazard  Wed, 22 Sep 2021 14:46:27 CDT
  • Sign up Now for the 100 Schools for Pollinators Challenge  Wed, 22 Sep 2021 11:50:43 CDT
  • Don Close, VP of Rabo AgriFinance Explains How Beef Won Over the Chinese Consumer  Wed, 22 Sep 2021 10:39:37 CDT
  • OSU's Paul Beck Presents Part One of Making Money in the Cattle Business: Buy Low and Sell High  Wed, 22 Sep 2021 10:09:19 CDT
  • Farmers and Ranchers to Engage in Global Climate Conversation  Wed, 22 Sep 2021 09:56:47 CDT
  • USDA and HHS Launch Resource Guide to Help Rural Communities Increase Access to Child Care Services   Wed, 22 Sep 2021 09:13:20 CDT

  • More Headlines...


    Ron salutes our daily email sponsors!

    Oklahoma Beef council Oklahoma Ag Credit Oklahoma Farm Bureau National Livestock Credit Ag Mediation Program P&K Equipment Tulsa Farm Show Union Mutual Stillwater Milling Oklahoma Cattlemen's Association KIS FUTURES, INC.


    Search OklahomaFarmReport.com

    © 2008-2021 Oklahoma Farm Report
    Email Ron   |   Newsletter Signup   |    Current Spots   |    Program Links

    WebReady powered by WireReady® Inc.