Evaluation of environmental culture to determine herd status for Johne's disease on Atlantic Canadian dairy farms

Authors

  • C. J. Lavers Atlantic Veterinary College, University of Prince Edward Island, Charlottetown, Prince Edward Island, Canada, C1A 4P3
  • G. P. Keefe Atlantic Veterinary College, University of Prince Edward Island, Charlottetown, Prince Edward Island, Canada, C1A 4P3
  • S. L. M. McKenna Atlantic Veterinary College, University of Prince Edward Island, Charlottetown, Prince Edward Island, Canada, C1A 4P3
  • I. R. Dohoo Atlantic Veterinary College, University of Prince Edward Island, Charlottetown, Prince Edward Island, Canada, C1A 4P3
  • M. Chaffer Atlantic Veterinary College, University of Prince Edward Island, Charlottetown, Prince Edward Island, Canada, C1A 4P3

DOI:

https://doi.org/10.21423/aabppro20123895

Keywords:

environmental culture, mycobacterium avium, small herd, dairy cattle

Abstract

Environmental culture (EC) is a non-invasive and relatively inexpensive method to detect the presence of Mycobacterium avium subsp paratuberculosis (MAP) in a herd. Research into the test characteristics of EC has generally focused on large, MAP-positive herds. This study was designed to evaluate the test characteristics of EC within typical Atlantic Canadian dairy herds. These herds tend to be smaller in size than herds that have been used in previous EC studies. Furthermore, many of these herds were suspected to be test-negative or have low MAP prevalence.

Cover image of the 45th Conference Proceedings: Three black-and-white cows lounge in a spring field. Yellow background.

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Published

2012-09-20

Issue

2012

Section

Research Summaries 1

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