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Roaring in Clydesdales.

B E Goulden1, L J Anderson, J I Cahill

  • 1Department of Veterinary Clinical Sciences, Massey University, Palmerston North, New Zealand.

New Zealand Veterinary Journal
|May 1, 1985
PubMed
Summary
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Abnormal arytenoid cartilage movement was observed in 50% of Clydesdale horses over one year old. Physical characteristics showed no significant correlation with these arytenoid movement abnormalities.

Area of Science:

  • Equine veterinary medicine
  • Animal respiratory physiology
  • Comparative anatomy

Background:

  • Arytenoid cartilage movement is crucial for normal equine respiration.
  • Recurrent laryngeal neuropathy (RLN) is a common condition affecting horses, often associated with abnormal arytenoid movement.
  • Understanding factors influencing RLN in specific breeds like Clydesdales is important for diagnosis and management.

Purpose of the Study:

  • To evaluate the prevalence of abnormal left arytenoid cartilage movement during quiet respiration in Clydesdale horses.
  • To investigate potential correlations between physical characteristics (sex, age, weight, height, neck length) and abnormal arytenoid cartilage movement.

Main Methods:

  • Endoscopic examination of 48 Clydesdale horses to assess arytenoid cartilage dynamics during quiet breathing.

Related Experiment Videos

  • Recording of physical parameters including age, sex, estimated weight, height, and neck length.
  • Statistical analysis to determine relationships between physical characteristics and observed arytenoid movements.

    • Main Results:

    • Abnormal left arytenoid cartilage movement was detected in 50% of horses aged over one year.
    • No statistically significant correlations were found between abnormal movement and sex, age, estimated weight, height, or neck length.
    • Horses with abnormal movement were, on average, slightly taller, lighter, and had longer necks.

    Conclusions:

    • A high prevalence of abnormal arytenoid cartilage movement exists in Clydesdale horses over one year of age.
    • Commonly measured physical characteristics do not appear to be reliable predictors of abnormal arytenoid movement in this population.
    • Further research may be needed to identify underlying causes or risk factors for arytenoid abnormalities in Clydesdales.