A Comparison of Serologic Responses to Type 1 and 2 Bovine Viral Diarrhea Viruses in Naturally Exposed Dairy Cattle

Authors

  • R. R. M. Tremblay Boehringer-Ingelheim (Canada) Ltd, Burlington, ON, Canada
  • C. A. Power Canadian Food Inspection Agency, Nepean, ON, Canada
  • L. T. Jordan Canadian Food Inspection Agency, Lethbridge, AB, Canada
  • P. S. Carman Animal Health Laboratory, Laboratory Services Division, University of Guelph, Guelph, ON, Canada

DOI:

https://doi.org/10.21423/aabppro20015275

Keywords:

bovine viral diarrhea viruses, BVDV, type-1, type-2, serologic response

Abstract

The two genotypes of bovine viral diarrhea viruses (BVDV) are designated as types 1 and 2. Type 1 BVDV can be further subdivided into types 1a and 1b. Although the differences between types 1 and 2 are based on the viral genome, there are also antigenic differences. Veterinarians routinely use serology as a tool to diagnose BVDV infections, but it is unclear if serologic testing for antibody against a type-1 BVDV will reliably detect cattle exposed to a type-2 BVDV. In 1999 in Ontario, 50% of BVDV isolated from diagnostic samples were type-2 BVDV (1). This study was undertaken to evaluate serologic response to a type-1 and a type-2 BVDV following natural exposure in dairy heifers.

Cover image of the 34th Conference Proceedings: Four men on horseback lead a single cow through a pen. Yellow background.

Downloads

Published

2001-09-13

Issue

2001

Section

Posters