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Lymphocytic enteritis and systemic vasculitis in sheep

C A Rae1

  • 1Veterinary Laboratory Services, Ontario Ministry of Agriculture and Food, Brighton.

The Canadian Veterinary Journal = La Revue Veterinaire Canadienne
|October 1, 1994
PubMed
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A potential new syndrome of lymphocytic enteritis and vasculitis in sheep causes chronic wasting. Further necropsy submissions are needed to identify the cause and industry impact.

Area of Science:

  • Veterinary Pathology
  • Sheep Medicine
  • Immunology

Background:

  • Chronic wasting in sheep can be debilitating.
  • Lymphocytic enteritis and vasculitis are observed intestinal and vascular lesions.
  • The etiology of these lesions in sheep remains unclear.

Purpose of the Study:

  • To describe a potential new syndrome in sheep characterized by chronic wasting.
  • To investigate the pathological findings of lymphocytic enteritis and vasculitis in affected sheep.
  • To encourage further investigation into the cause of this condition.

Main Methods:

  • Case study analysis of seven sheep from three flocks over eight years.
  • Clinical and postmortem examinations were performed.
  • Ancillary testing was conducted to rule out known etiologies.

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Main Results:

  • Seven cases of chronic wasting sheep (Suffolk breeds, 5-12 months old) were identified.
  • Lesions included lymphocytic enteritis and systemic lymphocytic vasculitis.
  • No definitive etiology was found, but lesions resembled viral or immune-mediated diseases.

Conclusions:

  • Lymphocytic enteritis and systemic lymphocytic vasculitis may represent a previously unrecognized syndrome in sheep.
  • The condition is associated with chronic wasting, weight loss, and inappetance.
  • Further necropsy submissions are crucial to determine the etiology and significance of this syndrome.