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Related Experiment Videos

Ram epididymitis: A clinical report.

B L Swift1, F Craddock, H A Hancock

  • 1Division of Microbiology and Veterinary Medicine Larmie, Wyoming 82071 USA; Division of Animal Science University of Wyoming Laramie, Wyoming 82071 USA.

Theriogenology
|March 1, 1982
PubMed
Summary

In a ram performance trial, four rams developed epididymitis despite Brucella ovis vaccination. Actinobacillus seminis was identified as the cause of the clinical signs in these sheep.

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Area of Science:

  • Veterinary Medicine
  • Animal Health
  • Bacteriology

Background:

  • Epididymitis is a significant concern in ram flocks, impacting reproductive performance.
  • Brucella ovis is a common pathogen associated with ram epididymitis.
  • Vaccination protocols are employed to mitigate disease incidence.

Purpose of the Study:

  • To investigate the etiology of clinical epididymitis in ram lambs undergoing a performance trial.
  • To identify the causative agent in rams exhibiting symptoms post-vaccination.

Main Methods:

  • A cohort of 205 ram lambs from multiple sources was utilized.
  • All rams received a commercial Brucella ovis bacterin immunization.
  • Clinical monitoring for epididymitis was conducted over a 150-day period.

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  • Bacteriological identification was performed on affected animals.

    • Main Results:

    • Four out of 205 ram lambs exhibited clinical signs of epididymitis during the trial.
    • Actinobacillus seminis was successfully isolated and identified as the causative agent in these four rams.
    • The incidence suggests potential challenges with Brucella ovis vaccination efficacy or alternative pathogens.

    Conclusions:

    • Actinobacillus seminis can cause clinical epididymitis in ram lambs, even in vaccinated populations.
    • This finding highlights the importance of considering differential diagnoses beyond Brucella ovis in cases of ram epididymitis.
    • Further research may be warranted to understand the prevalence and impact of Actinobacillus seminis in sheep.