Determining the Prevalence of Bovine Viral Diarrhea Virus Persistently Infected Calves Originating from a Number of Modem Western Well-vaccinated Dairy Herds

Authors

  • T. Shelton Technical Service, Intervet I Schering-Plough, Washington, UT 84780
  • B. Hoffman Animal Profiling International, Inc., Portland, OR 97217

DOI:

https://doi.org/10.21423/aabppro20094309

Keywords:

bovine viral diarrhea virus, BVDV, persistently infected, PI, dendogram, vaccination program, genetic characterization

Abstract

All arriving heifer calves and some additional bull calves were tested for bovine viral diarrhea virus (BVDV) persistently infected (PI) status when received by the calf ranch to determine incidence of occurrence across individual dairies contributing calves to this calf ranch. After confirmation of positive status, these animals were removed to eliminate potential for infection in subsequent breeding populations. In addition, 40 random positive PI samples were submitted for typing and genetic characterization to create a dendogram for comparison among PI calves and existing vaccination programs.

Cover image of the 42nd Conference Proceedings: Cattle grazing in a spring field along the horizon. In the foreground, one brown cow with a triangle marking and ear tags is posing. Yellow background.

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Published

2009-09-10

Issue

2009

Section

Research Summaries 2