How is manure changing over time? Trends in Midwest manure sample data

This post comes from our colleagues at the University of Minnesota -College of Extension. Follow their latest news on their blog: Minnesota Crop News

This post was written by: Nancy Bohl Bormann, Graduate research assistant; Melissa Wilson, Extension manure management specialist, & Erin Cortus, Extension engineer

Key Points

  • Current livestock manure “book values” (the approximate amounts of various nutrients in manure) are several decades old.
  • Using recent data from several Midwest U.S. labs, we found that manure nutrient data have changed over time compared to previous Midwest Plan Service (MWPS) manure book values.
  • The University of Minnesota is creating a manure nutrient database called ManureDB to help update these values.
  • We are currently looking to partner with laboratories that analyze manure on this project.
Continue reading “How is manure changing over time? Trends in Midwest manure sample data”

PEDV Detection in Manure Pits Confirmed 841 to 1,949 days after Disease Outbreaks

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.

Today, Dr. Allison and collaborators from Iowa State University and Central Life Science are sharing results regarding the detection of PEDV in manure pits for extended periods after disease outbreaks.

Key points:

  • Determining the origin of a PEDV re-infection at a farm is often difficult or inconclusive.
  • Manure pits have been shown to harbor virus after a farm has transitioned to a negative status.
  • PEDV DNA was found in farm manure pits between 46 and 1,949 days post disease outbreak.
Continue reading “PEDV Detection in Manure Pits Confirmed 841 to 1,949 days after Disease Outbreaks”