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Related Experiment Videos

Risk factors for bovine herpesvirus-1 seropositivity.

F Boelaert1, N Speybroeck, A de Kruif

  • 1Co-ordination Centre for Veterinary Diagnostics, Veterinary and Agrochemical Research Centre, Groeselenberg 99, 1180 Brussels, Belgium. frboe@var.fgov.be

Preventive Veterinary Medicine
|May 24, 2005
PubMed
Summary

Older male cattle and those from smaller herds with purchased animals showed higher risk for bovine herpesvirus-1-seropositivity. Herd size and purchase status interacted as risk factors in this Belgian cattle population study.

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Area of Science:

  • Veterinary Epidemiology
  • Animal Health
  • Infectious Diseases

Background:

  • Bovine herpesvirus-1 (BoHV-1) causes significant economic losses in cattle globally.
  • Understanding risk factors for BoHV-1 seropositivity is crucial for effective disease control strategies.
  • Previous studies have identified various factors, but interactions require further investigation.

Purpose of the Study:

  • To investigate risk factors associated with bovine herpesvirus-1 seropositivity in a representative Belgian cattle population.
  • To analyze the influence of animal demographics, origin, and herd characteristics on BoHV-1 seroprevalence.

Main Methods:

  • A cluster-sample serosurvey was conducted in 1998, sampling 11,284 bovids from 309 randomly selected unvaccinated herds.
  • Herds included dairy, mixed, and beef types across Belgium.

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  • Statistical analysis identified significant risk factors for seropositivity.

    • Main Results:

    • Older cattle and male bovids exhibited higher seroprevalence of BoHV-1.
    • A significant interaction was observed between animal origin (homebred vs. purchased) and herd size.
    • In smaller herds (≤50 cattle), purchasing status and larger herd size were identified as risk factors, an effect not seen in larger herds.

    Conclusions:

    • Age and sex are key demographic risk factors for BoHV-1 seropositivity.
    • Herd management practices, specifically purchasing animals and herd size in smaller operations, play a critical role in BoHV-1 transmission dynamics.
    • These findings inform targeted biosecurity measures for BoHV-1 prevention in cattle herds.