Effects of Seropositivity for Bovine Leukemia Virus, Mycobacterium avium subspecies paratuberculosis, and Neospora caninum on Risk of Culling in Dairy Cattle

Authors

  • Ashwani Tiwari Department of Health Management, Atlantic Veterinary College, University of Prince Edward Island, 550 University Avenue, Charlottetown, PE, CANADA CIA 4P3
  • John A. VanLeeuwen Department of Health Management, Atlantic Veterinary College, University of Prince Edward Island, 550 University Avenue, Charlottetown, PE, CANADA CIA 4P3
  • Ian R. Dohoo Department of Health Management, Atlantic Veterinary College, University of Prince Edward Island, 550 University Avenue, Charlottetown, PE, CANADA CIA 4P3
  • Joao P. Haddad Department of Health Management, Atlantic Veterinary College, University of Prince Edward Island, 550 University Avenue, Charlottetown, PE, CANADA CIA 4P3
  • Henrik Stryhn Department of Health Management, Atlantic Veterinary College, University of Prince Edward Island, 550 University Avenue, Charlottetown, PE, CANADA CIA 4P3
  • Greg P. Keefe Department of Health Management, Atlantic Veterinary College, University of Prince Edward Island, 550 University Avenue, Charlottetown, PE, CANADA CIA 4P3

DOI:

https://doi.org/10.21423/aabppro20035298

Keywords:

bovine leukemia virus, Mycobacterium avium subspecies paratuberculosis, MAP, Neospora caninum, NC, subclinical infection

Abstract

Infection with bovine leukemia virus (BLV), Mycobacterium avium subspecies paratuberculosis (MAP) and Neospora caninum (NC) can lead to clinical diseases (diarrhea or abortion, respectively) with subsequent culling. However, effect associated with subclinical infection by these agents is still unclear. The purpose of this research was to determine the effect of seropositivity for exposure to BLV, MAP and NC on risk of culling in subsequent years after testing in three Maritime dairy cattle.

Cover image of the 36th Conference Proceedings: Holstein cows standing in a row at a fence. One cow has put her head through the fence and is curiously inspecting a pile of hay. Yellow background.

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Published

2003-09-18

Issue

2003

Section

Research Summaries - Dairy I