PRRS:
Current Situation
Applied Research
Opportunities
Minnesota Pork Congress
January 14, 2014
Dave Wright, N212 Coordina...
Current PRRS Situation
Regionally
Nationally
MN N212 REGIONAL PRRS
ELIMINATION PROJECT
UPDATE
MN N212 Jan 2014
N212 Progress Report
2009

Jan 2013

Jan 2014

Sites Identified

446

812

872

Signed Participation
Agreements

266

408
...
Stevens County 2004
Stevens County 2006
Stevens County Area Jan 2013
Stevens County Area Jan 2014
Kandiyohi-Renville Jan 2013
Kandiyohi-Renville Jan 2014
PRRS Incidence Study
National PRRSv Incidence Project
Current Exponentially Weighted Moving Average Analysis 12/20/2013

S...
PRRS Incidence Study

Cumulative Incidence 12/20/2013

Steve
Tousignant
SDEC
Website
Future Impact of PRRS
PRRS is still with us,
but there is hope!
Progress Through
Application of Research
PRRSv Alone:
Impact on Grow-Finish
•
•
•
•
•

Reduced growth rate: 20%
Reduced feed intake: 7%
Reduced feed efficiency: 15...
Daniel Linhares PRRS
Elimination Study
• TTN-Total Time to Negative
• TTBP-Total Time to Baseline
Production
• Observation...
More Aggressive Monitoring
During Herd Closure
Monitoring scheme based on n=30
samples/month over 4 months
assumes that PR...
Herd Closure Monitoring
• 3 consecutive samples of 30 pigs PCR
negative at 2-week intervals
• 3 consecutive samples of 60 ...
Herd Closure based on
“Best Practices”
• Exposure method: MLV over LVI
Shorter TTBP despite longer TTN
MLV better economic...
Bioportal
• Powerful real-time mapping and data
analysis system using shared
information
• Andres Perez now on staff at
Un...
Packing Plant Transport
Biosecurity Study
• 17% positive on arrival; 11% of clean
positive on departure
• 1/3 (28%) of tru...
Progress in 2013
• Delayed incidence of new infections
nationally
• Recovery in Stevens County area
• Value of regional co...
Opportunities for 2014
• Include PEDV in N212 project
• Automated downloading of participant’s
lab reports from MN, SDSU a...
Needs for the Future
• Vaccine with consistent cross protection
and marker capability
• Ability to predict immunity
• Impr...
Thanks!
• MN Pork Producers, MN Pork Board
• University of Minnesota-SDEC
Montse Torremorell, Bob Morrison
• Supporting Ve...
Dave Wright, D.V.M.
763-242-7535
wright2me.dave@gmail.com
MN N212 Regional PRRS Elimination
Project Coordinator
Dr. David Wright - PRRS: Understanding the Current State, Future Impact and What Producers Can Do To Reduce Their Risk
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Dr. David Wright - PRRS: Understanding the Current State, Future Impact and What Producers Can Do To Reduce Their Risk

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PRRS: Understanding the Current State, Future Impact and What Producers Can Do To Reduce Their Risk - Dr. David Wright, Voluntary Regional PRRS Elimination Project Coordinator in Minnesota, from the 2014 Minnesota Pork Congress, January 14-15, Minneapolis, MN, USA.

More presentations at http://www.swinecast.com/2014-minnesota-pork-congress

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Dr. David Wright - PRRS: Understanding the Current State, Future Impact and What Producers Can Do To Reduce Their Risk

  1. 1. PRRS: Current Situation Applied Research Opportunities Minnesota Pork Congress January 14, 2014 Dave Wright, N212 Coordinator
  2. 2. Current PRRS Situation Regionally Nationally
  3. 3. MN N212 REGIONAL PRRS ELIMINATION PROJECT UPDATE
  4. 4. MN N212 Jan 2014
  5. 5. N212 Progress Report 2009 Jan 2013 Jan 2014 Sites Identified 446 812 872 Signed Participation Agreements 266 408 567 Positive PRRS Sites 38 89 72 18 88 273 308 88 107 343 296 Stable Vaccinated Negative PRRS 247 Empty Sites Unknown Status 181
  6. 6. Stevens County 2004
  7. 7. Stevens County 2006
  8. 8. Stevens County Area Jan 2013
  9. 9. Stevens County Area Jan 2014
  10. 10. Kandiyohi-Renville Jan 2013
  11. 11. Kandiyohi-Renville Jan 2014
  12. 12. PRRS Incidence Study National PRRSv Incidence Project Current Exponentially Weighted Moving Average Analysis 12/20/2013 Steve Tousignant SDEC Website
  13. 13. PRRS Incidence Study Cumulative Incidence 12/20/2013 Steve Tousignant SDEC Website
  14. 14. Future Impact of PRRS PRRS is still with us, but there is hope!
  15. 15. Progress Through Application of Research
  16. 16. PRRSv Alone: Impact on Grow-Finish • • • • • Reduced growth rate: 20% Reduced feed intake: 7% Reduced feed efficiency: 15% Cost: $14 per head Extended finishing period by 25 days N Gabler, et al-ISU
  17. 17. Daniel Linhares PRRS Elimination Study • TTN-Total Time to Negative • TTBP-Total Time to Baseline Production • Observations on Standard Testing Protocols
  18. 18. More Aggressive Monitoring During Herd Closure Monitoring scheme based on n=30 samples/month over 4 months assumes that PRRSv infection dies out within 90 days once prevalence is below 10%. We showed that this is not always the case. Linhares-UofM
  19. 19. Herd Closure Monitoring • 3 consecutive samples of 30 pigs PCR negative at 2-week intervals • 3 consecutive samples of 60 pigs PCR negative at 2-week intervals • Collect 6 rope samples from 12 litters on weeks opposite serum collection • Monthly testing of weaned pigs and sampling of 10 head of naïve sentinels Pipestone Vet Clinic
  20. 20. Herd Closure based on “Best Practices” • Exposure method: MLV over LVI Shorter TTBP despite longer TTN MLV better economical choice than LVI Linhares UofM • Break Point for Control vs Eradication: 3 Years (If frequency of new break > 3yrs, Eradicate; If < 3 yrs, Control) Clayton Johnson, Maschoffs
  21. 21. Bioportal • Powerful real-time mapping and data analysis system using shared information • Andres Perez now on staff at University of Minnesota
  22. 22. Packing Plant Transport Biosecurity Study • 17% positive on arrival; 11% of clean positive on departure • 1/3 (28%) of trucks leaving packing plant are contaminated with PEDv • Prompted discussion-best practices -Allow driver to remain in cab -Side entry trailers/line of separation P. Yeske et. al. NPB
  23. 23. Progress in 2013 • Delayed incidence of new infections nationally • Recovery in Stevens County area • Value of regional control efforts More than 30 similar projects nationally • Attitude changes allowing shared information
  24. 24. Opportunities for 2014 • Include PEDV in N212 project • Automated downloading of participant’s lab reports from MN, SDSU and ISU VDL’s • Bar code labels with Prem ID’s available • Investigate the feasibility of making PRRS and/or PEDV a reportable disease
  25. 25. Needs for the Future • Vaccine with consistent cross protection and marker capability • Ability to predict immunity • Improved surveillance testing and reporting Continue to Cooperate and Communicate!
  26. 26. Thanks! • MN Pork Producers, MN Pork Board • University of Minnesota-SDEC Montse Torremorell, Bob Morrison • Supporting Veterinarians • Participating Producers
  27. 27. Dave Wright, D.V.M. 763-242-7535 wright2me.dave@gmail.com MN N212 Regional PRRS Elimination Project Coordinator

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