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Economic analysis of alternative AD control programmes

J McInerney1, D Kooij

  • 1Agricultural Economics Unit, University of Exeter, UK.

Veterinary Microbiology
|April 1, 1997
PubMed
Summary
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Aujeszky's disease (AD) control strategies were economically evaluated. Intensive vaccination followed by test-and-slaughter is most cost-effective in high-density pig regions.

Area of Science:

  • Veterinary Economics
  • Animal Disease Control
  • Epidemiology

Background:

  • Aujeszky's disease (AD) poses a significant economic threat to the swine industry due to its high potential losses.
  • Controlling AD involves balancing the costs of intervention against the benefits of reduced production losses.

Purpose of the Study:

  • To economically evaluate four distinct strategies for Aujeszky's disease control.
  • To identify the most economically viable approach for managing AD in different swine production contexts.

Main Methods:

  • Economic analysis of four strategies: no control, vaccination for suppression, phased eradication (vaccination then culling), and immediate eradication (test-and-slaughter).
  • Utilized data from vaccination studies in Germany and the Netherlands.

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  • Developed a computer model to estimate disease costs under various technical, epidemiological, and economic scenarios.

    • Main Results:

    • No single AD control strategy is universally optimal; effectiveness depends on factors like pig density, disease prevalence, production systems, and trade.
    • For high pig density regions, a combined strategy is most economical.

    Conclusions:

    • The most economically advantageous strategy for high pig density areas involves initial suppression of herd prevalence through intensive vaccination.
    • This is followed by complete eradication of Aujeszky's disease using a test-and-removal policy for remaining positive animals.