The 5 best blog posts in 2020

For our first article of 2021, the UMN swine group would like to wish you all the best for this new year. May it bring you a lot of joy and peace. As we reflect on 2020, we would like to share the posts that were your favorite as well as a few gems that you might have missed. We hope that you enjoy reading this selection and we will come back on Friday with our usual Science Page feature. As always, thank you for reading this page and for supporting us.

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Contemporary North American Mycoplasma hyopneumoniae MICs

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 MycoLab at the University of Minnesota shares results from a project looking at Mycoplasma hyopneumoniae Minimum Inhibitory Concentrations (MICs) from various US isolates.

Key points

  • Antibiotic susceptibility profiles of eleven M. hyopneumoniae isolates circulating in the US within the most recent six years were obtained. 
  • Overall, a high in vitro efficacy of the tested antimicrobials against M. hyopneumoniae field isolates was observed.
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Mycoplasmas in swine: a new comprehensive book

Dr. Maria Pieters, head of the MycoLab at the University of Minnesota has edited, in collaboration with Drs. Dominiek Maes and Marina Sibila, a newly published book on swine Mycoplasmas. Mycoplasmas in Swine provides up-to-date scientific, clinical and practical information useful to scientists and veterinarians alike. Most emphasis has been placed on Mycoplasma hyopneumoniae, as this is economically the most important Mycoplasma sp. in swine. However, other pathogenic species like Mycoplasma hyorhinis, Mycoplasma hyosynoviae and Mycoplasma suis are discussed.

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Mycoplasma hyopneumoniae genetic variability within swine production flows

In this recent publication in the Canadian Journal of Veterinary Research, Dr. Alyssa Betlach from the MycoLab at the University of Minnesota investigates the genetic variability of Mycoplasma hyopneumoniae within and across various production flows within a single system.

Key points

  • Multiple-locus variable-number tandem repeat analysis allows to detect genetic variability between M. hyopneumoniae strains.
  • Four production flows were sampled over a duration ranging from 4 months to 3 years.
  • Between 1 and 6 variable-number tandem repeat (VNTR) types were found within the four production flows.
  • VNTR types in growing sites seem to originate from their respective breeding herds.
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Natural transmission and detection of Mycoplasma hyopneumoniae in a naïve gilt population

Dr. Alyssa Betlach, member of the Maria Pieters Myco Lab, recently published a study on the natural transmission of Mycoplasma hyopneumoniae in Veterinary Microbiology. The study evaluated transmission rate in a naïve gilt population and compared various sample types to detect infection.

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