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Related Experiment Videos

Keratoconjunctivitis in a hill sheep flock.

B D Hosie1

  • 1Scottish Agricultural Colleges, Veterinary Investigation Centre, Greycrook, St Boswells, Roxburghshire.

The Veterinary Record
|January 9, 1988
PubMed
Summary
This summary is machine-generated.

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A sheep keratoconjunctivitis outbreak caused by Mycoplasma conjunctivae was effectively treated with topical aureomycin and long-acting oxytetracycline, though prophylactic treatments failed to prevent spread.

Area of Science:

  • Veterinary Medicine
  • Animal Health
  • Ovine Diseases

Background:

  • Keratoconjunctivitis outbreaks occurred in ewes over two consecutive winters and sporadically in subsequent seasons.
  • The infection, likely introduced via purchased rams, was previously unrecognized on the farm.
  • Both Blackface and Cheviot ewes demonstrated equal susceptibility.

Purpose of the Study:

  • To identify the causative agent of keratoconjunctivitis in ewes.
  • To evaluate the efficacy of a specific treatment regimen.
  • To assess the impact of the disease on reproductive performance.

Main Methods:

  • Isolation of Mycoplasma conjunctivae from conjunctival swabs of affected sheep.
  • Clinical treatment involving topical aureomycin and intramuscular oxytetracycline.

Related Experiment Videos

  • Prophylactic administration of aureomycin powder.

    • Main Results:

    • Mycoplasma conjunctivae was identified as the pathogen.
    • A single course of topical aureomycin and injectable oxytetracycline proved effective in preventing blindness.
    • Prophylactic aureomycin did not prevent disease transmission.
    • No significant impact on weaning percentages was observed.

    Conclusions:

    • Mycoplasma conjunctivae is a significant cause of ovine keratoconjunctivitis.
    • Prompt clinical treatment is crucial for preventing blindness.
    • Prophylaxis with aureomycin powder is not effective in controlling outbreaks.