Evaluation of Environmental Sampling to Determine Distribution and Dairy Herd Infection Status for Mycobacterium avium subspecies paratuberculosis

Authors

  • J. E. Lombard USDA:APHIS:VS;Centers for Epidemiology and Animal Health, Fort Collins, CO
  • R. L. Smith Cornell University, College of Veterinary Medicine, Ithaca, NY
  • B. A. Wagner USDA:APHIS:VS;Centers for Epidemiology and Animal Health, Fort Collins, CO
  • B. J. McCluskey USDA:APHIS:VS;Centers for Epidemiology and Animal Health, Fort Collins, CO

DOI:

https://doi.org/10.21423/aabppro20054855

Keywords:

Johne's Disease, Mycobacterium avium paratuberculosis, replacement cattle, ELISA

Abstract

An important component of the Voluntary Bovine Johne's Disease Control Program is to determine herd infection status for Mycobacterium avium subspecies paratuberculosis (MAP). To help prevent the transmission of MAP, dairy and beef herds providing replacement cattle should know their infection status. Herds acquiring cattle should be fairly confident that the source herd is at low risk for MAP infection. The current requirements for a herd to be considered Level 1 of the test-negative component requires ELISA testing 30 animals followed by fecal culture confirmation of ELISA-positive cattle. Since the ELISA is approximately 25-50% sensitive, many infected herds are classified as low risk and enter Level 1 based on this testing scheme.

Cover image of the 38th Conference Proceedings: A cow nuzzles her newborn calf in a stall with straw bedding. Both are content. Yellow background.

Downloads

Published

2005-09-24

Issue

2005

Section

Research Summaries 3

Most read articles by the same author(s)

1 2 > >>