Development of a Bulk-tank Surveillance Program for Johne's Disease in New York Dairy Farms

Authors

  • Y. H. Schukken Quality Milk Production Services, Cornell University, Ithaca, NY 14853
  • T. M. VanSlyke Quality Milk Production Services, Cornell University, Ithaca, NY 14853
  • N. Djuranovic IDEXX Laboratories, Westbrook, ME 04092

DOI:

https://doi.org/10.21423/aabppro20104132

Keywords:

Johne's disease, dairy cattle, Mycobacterium avium, diagnostic testing, screening, bulk-milk screening, fecal culture

Abstract

Johne's disease in dairy cattle is caused by Mycobacterium avium subsp paratuberculosis (MAP). Diagnostic testing is an important tool to identify infected animals, however individual animal testing is expensive and labor intensive. A screening test to reliably identify herds with a significant MAP problem would be of great value to the industry. To evaluate the value of a bulk-milk screening test, we collected data on MAP infection status based on 1) fecal culture of cows in the herd, and 2) contemporary environmental samples, and compared these two estimates of MAP infection status to a bulk-milk MAP ELISA titer.

Cover image of the 43rd Conference Proceedings: Two short-horned cattle grazing in a field, surrounded by a flock of egrets. Yellow background.

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Published

2010-08-19

Issue

2010

Section

Research Summaries 2

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