Mycoplasma bovis and Primary Bovine Virus Diarrhea Virus Co-association in Chronic Pneumonia of Feedlot Cattle

a Histopathological and Immunohistochemical study

Authors

  • F. Shahriar Department of Veterinary Pathology, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan
  • E. G. Clark Prairie Diagnostic Service, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan
  • E. Janzen Department of Herd Medicine, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan
  • K. West Prairie Diagnostic Service, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan
  • G. Wobeser Department of Veterinary Pathology, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan

DOI:

https://doi.org/10.21423/aabppro20005388

Keywords:

antibiotic resistance, arthritis, M. bovis, bovine virus diarrhea virus, chronic pneumonia

Abstract

Recently, multi-source feedlots in the prairie region of western Canada have experienced many cases of antibiotic resistant pneumonia, sometimes in association with multiple joint fibrinous arthritis. The lung lesions in these cases resemble those described in M. bovis infection.1 We have also observed vascular lesions, positive by immunohistochemistry for bovine virus diarrhea virus (BVDV), in the heart and lungs of some cattle. A retrospective immunohistochemical and histopathological study was done of animals of this type was submitted to the Western College of Veterinary Medicine between January 1995 and December 1998. Our objective was to determine frequency of occurrence and distribution of M. bovis, BVDV, and Haemophilus somnus in lungs and hearts of animals with lesions typical of this form of chronic pneumonia.

Cover image of the 33rd Conference Proceedings: Cattle and calves standing in a field of wildflowers, gazing curiously at the photographer. Yellow background.

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Published

2000-09-21

Issue

2000

Section

Research Summaries 2

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