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

advertisements
   
   
   
   
   
   
   
   
   
   

Agricultural News


How Disposition Affects Pregnancy Rate - Another Good Excuse to Cull Cows with Bad Temperments

Tue, 15 May 2018 12:43:06 CDT

How Disposition Affects Pregnancy Rate - Another Good Excuse to Cull Cows with Bad Temperments Dr. Glenn Selk, Oklahoma State University Emeritus Extension Animal Scientist, offers herd health advice as part of the weekly series known as the "Cow Calf Corner" published electronically by Dr. Peel and Dr. Glenn Selk. Today, Dr. Selk explains how a cow's disposition can affect its pregnancy rate.


"Now we have another good excuse to cull cows due to bad temperament. Producers that routinely breed cows artificially realize that cows that are unruly and nervous are less likely to conceive to artificial insemination. Presumably the lowered conception rates were because they have been stressed as they are passed through the working facilities and restrained while being synchronized and inseminated. Elevated core body temperature could be one reason that conception rates of agitated cows after artificial insemination are lowered. Now it seems that, even in the serenity of a natural breeding pasture, cows with bad dispositions are less likely to conceive when mated with bulls.



"University of Florida animal scientists recorded disposition scores over two years on 160 Braford and 235 Brahman x British crossbred cows. They wanted to evaluate the effects of cow temperament and energy status on the probability to become pregnant during a 90-day natural breeding season. Cows were scored as 1= calm, no movement to 5= violent and continuous struggling while in the working chute. Also a pen score assessment was assigned as 1= unalarmed and unexcited to 5 = very excited and aggressive toward technician. An exit velocity speed score was measured as the cows exited the working chute as 1= slowest and 5 = fastest. An overall temperament index score was calculated by averaging the chute score, pen score and exit velocity score. Blood samples were analyzed for cortisol concentrations. Cortisol is a hormone released when mammals are stressed or excited. Increased cow temperament score and elevated plasma cortisol concentrations both were associated with decreased probability of pregnancy.



"These results suggest that excitable temperament and the consequent elevated cortisol concentrations are detrimental to reproductive function of cows. These authors concluded that management strategies that improve cow disposition, enhance their immune status, and maintain the cow herd at adequate levels of nutrition are required for optimal reproductive performance. Source: Cooke and co-workers. 2009 Florida Beef Research Report. In addition to the danger that wild, crazy cows create for cattle producers, the wear and tear on equipment and fences, reduced likelihood of reproductive success is another good reason to cull poor disposition from the herd."




   

 

WebReadyTM Powered by WireReady® NSI

 


Top Agricultural News

  • Oklahoma State's DASNR and CASNR Honor Three Alums and Three Champions on Campus This Past Friday  Sun, 21 Oct 2018 16:24:38 CDT
  • Oklahoma Grain Elevator Cash Bids as of 2:00 p.m. Friday, October 19, 2018  Fri, 19 Oct 2018 14:25:41 CDT
  • Friday Market Wrap-Up with Justin Lewis  Fri, 19 Oct 2018 14:11:50 CDT
  • Friday Afternoon Market Wrap-Up with Carson Horn  Fri, 19 Oct 2018 13:50:58 CDT
  • OK Cattlemen's Foundation Sends Funds to Help Cattle Producers Affected by Hurricane Michael  Fri, 19 Oct 2018 13:08:45 CDT
  • U.S. Cotton Now Free - After More Than 100 Years - of the Economically Devastating Pink Bollworm  Fri, 19 Oct 2018 12:58:40 CDT
  • Agricultural Alliance 25x'25 Urges Industry Groups to Sign On In Support of Domestic Bioenergy  Fri, 19 Oct 2018 12:47:00 CDT
  • OSU Hosts Free Herbicide Symptomology Clinic for Producers Dealing with Increased Weed Pressure  Fri, 19 Oct 2018 12:39:10 CDT

  • More Headlines...

       

    Ron salutes our daily email sponsors!

    Livestock Exchange Oklahoma Ag Credit Oklahoma Farm Bureau National Livestock Credit P&K Equipment Tulsa Farm Show Stillwater Milling KIS FUTURES, INC. Oklahoma Cattlemen's Association

    Search OklahomaFarmReport.com

    Find more about Weather in Oklahoma City, OK

       
       
    © 2008-2018 Oklahoma Farm Report
    Email Ron   |   Newsletter Signup   |    Current Spots   |    Program Links

    WebReady powered by WireReady® Inc.