VSP.LF.DK [email protected] PIG RESEARCH CENTRE PRRSV control in Denmark Charlotte Sonne Kristensen Pig...
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VSP.LF.DK [email protected] PIG RESEARCH CENTRE PRRSV control in Denmark Charlotte Sonne Kristensen Pig Research Centre Danish Agriculture & Food Council
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Transcript of VSP.LF.DK [email protected] PIG RESEARCH CENTRE PRRSV control in Denmark Charlotte Sonne Kristensen Pig...
PIG RESEARCHCENTRE
PRRSV control in DenmarkCharlotte Sonne Kristensen
Pig Research Centre
Danish Agriculture & Food Council
PIG RESEARCHCENTRE
Outline
PRRSV in DenmarkPRRSV eradicationMotivation of the farmers
– Production loss– Antibiotic used
Conclusion
PIG RESEARCHCENTRE
PRRSV in Denmark First diagnose in 1992
MLV Vaccination initiated 1996
PIG RESEARCHCENTRE
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
PIG RESEARCHCENTRE
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
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Eradications 2005-2010
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PRRSV Partial depopulation
– AIAO– Empty stable with continuous flow– Purchase negative breeding animals– Vaccination and quarantine
Large success rate
PIG RESEARCHCENTRE
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
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Who should pay??
PIG RESEARCHCENTRE
Motivation of the farmers Production loss Antibiotic use
PIG RESEARCHCENTRE
Production loss ACUTE Weekly production data from 8 herds with
acute outbreak of PRRSV
PIG RESEARCHCENTRE
Production loss ACUTE
Weaned/litter Liveborne/litter Dead/litter Start/end PRRSV
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Conclusion ACUTE Outbreak 12-60 weeks (average 33 weeks) Loss sow/pen place +€5 to -€100 (average €31)
PRRSV US>PRRSV EU
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Production loss CHRONIC Production data annually collected Merged with SPF status Average on selected production parameters calculated
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2010 2011
-PRRSV +PRRSV -PRRSV +PRRSV
Sows
No herds 361 149 327 124
Borne alive 14,57 14,54 14,84 14,82
Total piglet mortality, % 23,30 23,82 22,48 23,19
Weaners
No herds 295 106 274 101
Mortality, % 2,65 2,88 2,73 3,29
Finishers
No herds 163 88 187 86
Mortality, % 3,68 4,06 3,50 3,75
PIG RESEARCHCENTRE
Conclusion CHRONIC A little bit on mortality
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Antibiotic use and PRRSV PRRSV prevalence among
– 50 herds with highest antibiotic use– 50 herds with lowest antibiotic use
No difference
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What should motivate? Production loss- acute MAYBEE Production loss- chronic NO Antibiotic use NO
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Difficult to motivate farmers No general coordinated PRRSV control in
Denmark
Besides………………………..
PIG RESEARCHCENTRE
Challenges Antibiotic use EU Ban on Sow Stalls Feed prices
PIG RESEARCHCENTRE
Thank you for your attention
![Porcine reproductive and respiratory syndrome virus ...cated in SJPL cell line [3]. Although PRRSV 1 and PRRSV 2 [4] have great differences in genomic nucleo-tide sequences and amino](https://static.fdocuments.in/doc/165x107/60c072602864d7617553cd1f/porcine-reproductive-and-respiratory-syndrome-virus-cated-in-sjpl-cell-line.jpg)
