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Ben Williams

Knowledge Transfer Senior Manager

AHDB Pork Knowledge Exchange

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Enhancing the impact of regional health improvement programmes

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Research partner: Warwick University

Sponsor: AHDB Pork-funded studentship (Daniel Franklin)

Duration: 2010 – 2014 

Aims and objectives

  • To help the pig industry understand how porcine reproductive and respiratory syndrome (PRRS) and swine dysentery (SD) persist in the national herd
  • To develop mathematical simulation models to help understand the role of the metaherd in the spread of PRRS
  • To use these models to test control and intervention strategies across the metaherd. 

Findings to date

  • The use of vaccinations in the metaherd was simulated
  • The metaherd level gives an indication of what extent PRRSV reduces productivity from a regional perspective
  • Results suggest that fadeout within the metaherd does not occur once infection has spread to herds >150 sows
  • Results suggest that a loose threshold herd size exists, between 100-150 sows, below which infection does not persist in a herd. 

Further information

PhD seminar presentation (2013)

Full results and details on the vaccination strategy work will be available in the near future.

Find out more about PhD student Daniel Franklin