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PRRSV control in Denmark

PRRSV control in Denmark. Charlotte Sonne Kristensen Pig Research Centre Danish Agriculture & Food Council. Outline. PRRSV in Denmark PRRSV eradication Motivation of the farmers Production loss Antibiotic used Conclusion. PRRSV in Denmark. PRRSV in Denmark. First diagnose in 1992

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PRRSV control in Denmark

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  1. PRRSV control in Denmark Charlotte Sonne Kristensen Pig Research Centre Danish Agriculture & Food Council

  2. Outline • PRRSV in Denmark • PRRSV eradication • Motivation of the farmers • Production loss • Antibiotic used • Conclusion

  3. PRRSV in Denmark

  4. PRRSV in Denmark • First diagnose in 1992 • MLV Vaccination initiated 1996

  5. PRRSV vaccination • Objective • to reduce the spread of PRRSV • To concider a national eradication (3 years) • Vaccination • 1000 herds vaccinated (July-December 1996) • Clinical outbreaks 2-3 month after vacc. • Disease in vaccinated and non-vaccinated neighbours • Vaccination stopped December 1996

  6. PRRSV today • 43% of the herds have a PRRSV declaration • 73% of the sows • 39% of the finishers • 65% of the herds are declared free

  7. PRRSV eradication

  8. Eradications 2005-2010

  9. PRRSV Partial depopulation AIAO Empty stable with continuous flow Purchase negative breeding animals Vaccination and quarantine Large success rate

  10. We know • PRRSV status of almost half the herds • Location of all herds • Movement of all pigs • Size of all herds • Age groups represented at each herd • How to eradicate PRRSV

  11. So why not entire Country?

  12. Who should pay??

  13. Motivation of the farmers • Production loss • Antibiotic use

  14. Production loss ACUTE • Weekly production data from 8 herds with acute outbreak of PRRSV

  15. Production loss ACUTE Weaned/litter Liveborne/litter Dead/litter Start/end PRRSV

  16. Conclusion ACUTE • Outbreak 12-60 weeks (average 33 weeks) • Loss sow/pen place +€5 to -€100 (average €31) • PRRSV US>PRRSV EU

  17. Production loss CHRONIC • Production data annually collected • Merged with SPF status • Average on selected production parameters calculated

  18. Conclusion CHRONIC • A little bit on mortality

  19. Antibiotic use and PRRSV • PRRSV prevalence among • 50 herds with highest antibiotic use • 50 herds with lowest antibiotic use • No difference

  20. What should motivate? • Production loss- acute MAYBEE • Production loss- chronic NO • Antibiotic use NO

  21. Difficult to motivate farmers • No general coordinated PRRSV control in Denmark • Besides………………………..

  22. Challenges • Antibiotic use • EU Ban on Sow Stalls • Feed prices

  23. Thank you for your attention

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