Evaluation of Diagnostic Tests for Johne's Disease Using Detection of Mycobacterium avium Subspecies paratuberculosis in Tissues to Classify Infection Status of Dairy Cows

Authors

  • J. E. Lombard USDA:APHIS:VS; Centers for Epidemiology and Animal Health, Fort Collins, CO; Animal Population Health Institute, Colorado State University, Fort Collins, CO
  • H. L. Hirst Animal Population Health Institute, Colorado State University, Fort Collins, CO
  • M. C. Antognoli Animal Population Health Institute, Colorado State University, Fort Collins, CO
  • M. D. Salman Animal Population Health Institute, Colorado State University, Fort Collins, CO
  • F. B. Garry Animal Population Health Institute, Colorado State University, Fort Collins, CO

DOI:

https://doi.org/10.21423/aabppro20044958

Keywords:

Johne's disease, diagnostic tests, postmortem histopathology

Abstract

Interpretation of Johne's disease (JD) diagnostic tests is not always clear to determine the infection status of animals. Multiple tests on an individual animal are often not in agreement. The objectives of this study were to determine the association between infection status of individual dairy cows, based on postmortem histopathology and culture of multiple tissues, and the previous results of fecal culture and multiple serum ELISA tests.

Cover image of the 37th Conference Proceedings: Cattle in pens that stretch to the horizon. Yellow background.

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Published

2004-09-23

Issue

2004

Section

Research Summaries - Dairy II

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