Environmental monitoring as an educational tool in a PEDV outbreak

This is our Friday rubric: every week a new Science Page from the Bob Morrison’s Swine Health Monitoring Project. The previous editions of the science page are available on our website.

This week, we are sharing a report from the Kansas State University about monitoring PEDv in the environment.

Key Points

  • Environmental monitoring can highlight biosecurity gaps and be an educational tool
  • Biosecurity involves exclusion and containment
  • Staff involvement in monitoring results and solutions can be critical to staff behavior and motivation
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Frequency and destination of live exports of breeding-stock pigs from the United States

This is our Friday rubric: every week a new Science Page from the Bob Morrison’s Swine Health Monitoring Project. The previous editions of the science page are available on our website.

This week, the MSHMP team in association with SHIC is a mirror of a previous report about the import of breeding stock and focuses on the export of these animals.

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Monitoring and updating the value of productivity losses due to PRRSv

This is our Friday rubric: every week a new Science Page from the Bob Morrison’s Swine Health Monitoring Project. The previous editions of the science page are available on our website.

This week, we are sharing a report from Drs. Holtkamp and Linhares in association with the MSHMP team, regarding the updated cost of PRRS for the US industry.

Keypoints

  • Productivity in breeding herds affected by PRRSV relative to unaffected herds has improved since 2010, suggesting producers and veterinarians have made progress in controlling PRRSV.
  • Combined effect of these changes resulted in a net reduction in the value of productivity losses due to PRRSV of $138 million, a 20.8% reduction compared to the $664 million per year estimated in 2010.
Continue reading “Monitoring and updating the value of productivity losses due to PRRSv”

Frequency and origin of live imports of breeding-stock pigs to the United States

This is our Friday rubric: every week a new Science Page from the Bob Morrison’s Swine Health Monitoring Project. The previous editions of the science page are available on our website.

This week, we are sharing a report from the MSHMP team in collaboration with the Swine Health Information Center regarding the origin of the pigs that are imported for breeding purposes.

Key Points

  • International live pig transport is a possible route for disease entry into the U.S.
  • The first step in assessing this risk is to categorize and analyze breeding stock import data
  • Small numbers of imported breeding pigs have come from a variety of countries, but the majority come from Canada
Continue reading “Frequency and origin of live imports of breeding-stock pigs to the United States”

PCR clamping for selectively sequencing wild-type PRRSV in vaccinated herds

This is our Friday rubric: every week a new Science Page from the Bob Morrison’s Swine Health Monitoring Project. The previous editions of the science page are available on our website.

This week, we are sharing a report by Harmon et al. from Iowa State University regarding PCR clamping. This project was funded by AAVLD Thermo Fisher Innovation Grant in Veterinary Diagnostic Medicine and ISU-VDL.

Key points

  • Conventional ORF5 sequencing may not differentiate between wild-type or vaccine-like.
  • Blocking the amplification of vaccine-like sequences it is possible to increase the likelihood of wild-type amplification.
  • Clamping allows the amplification of the wild-type with mixtures containing as little as 10% of a mixture with the vaccine-like.
Continue reading “PCR clamping for selectively sequencing wild-type PRRSV in vaccinated herds”