Review of MSHMP PRRS Chart 2 ‐ Prevalence.

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.

Key Points: 

  • Chart 2 depicts the prevalence (e.g. the proportion of breeding herd in each of the PRRS status categories over time).
  • Since 2013, the proportion of farms that vaccinate (2vx) and that use field virus (2fvi) has not changed dramatically.
  • The cyclical pattern of farms in status 1 observed early in the program is slowly disappearing after 2019. 
Continue reading “Review of MSHMP PRRS Chart 2 ‐ Prevalence.”

How Are The Asian Pork Markets?

Podcasts are a perfect way to get caught up with new swine information! We are presenting you the latest episode from “At The Meeting… Honoring Dr. Bob Morrison” in collaboration with SwineCast.

This episode looks at markets that have been signaling a future shortage of pork in Asian markets as a second wave of African Swine Fever (ASF) sweeps through China, Vietnam, and elsewhere.

Continue reading “How Are The Asian Pork Markets?”

Is the 2020-21 PRRS a different one?

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.

Key points

  • MSHMP data shows a slight lower PRRS incidence than in previous years
  • There has been PRRS outbreaks clustered in time and space in specific regions where the virus has generated important losses 
  • PRRS prevalence has been at an all-time high, contributing to the general perception of a higher burden of PRRS
Continue reading “Is the 2020-21 PRRS a different one?”

Streptococcus suis: predicting pathogenicity with virulence-associated genes?

A recent publication in Porcine Health Management by April Estrada, from the Gebhart lab at the University of Minnesota, proposes new virulence-associated genes to predict the pathogenicity of US Streptococcus suis. This project continues her previous work on the classification of US S. suis strains based on pathotypes.

Continue reading “Streptococcus suis: predicting pathogenicity with virulence-associated genes?”

PRRS 2019-2021 Exponentially Weighted Moving Average by State

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 shares the 2019-2021 PRRS incidence by state and how it influenced exponentially weighted moving average (EWMA).

Reminder: What is Exponentially Weighted Moving Average?

Keypoints

  • We continue to observe different EWMA patterns across states.
  • Iowa, Minnesota and Nebraska are undergoing an epidemic of larger magnitude and duration when compared to the previous year.
  • Even though fall and winter continue to be the seasons with overall higher incidence, sporadic cases in warmer months were observed throughout the states.
Continue reading “PRRS 2019-2021 Exponentially Weighted Moving Average by State”