Mycoplasma hyopneumoniae genetic variability within swine production flows

Alyssa M. Betlach, Eduardo Fano, Amanda Sponheim, Robert Valeris-Chacin, Laura Dalquist, Randall S. Singer, Maria Pieters

Research output: Contribution to journalArticlepeer-review


The aim of this study was to assess the genetic variability of Mycoplasma hyopneumoniae within various swine production flows. Four M. hyopneumoniae positive production flows, composed of 4 production stages, were selected for this study. Laryngeal and/or bronchial swabs were collected from each production stage within a flow, for a period of 4 months up to 3 years. A multiple-locus variable-number tandem repeat analysis was performed to assess the genetic variation of M. hyopneumoniae within and across production flows through the identification of variable-number tandem repeat (VNTR) types. A maximum of 6 M. hyopneumoniae VNTR types were identified in a single flow, in which VNTR types appeared to be flow specific. An identical VNTR type was detected across several production stages for up to 3 years. In this study, minimal M. hyopneumoniae genetic variation was evidenced within and across production flows.

Original languageEnglish (US)
Pages (from-to)310-313
Number of pages4
JournalCanadian Journal of Veterinary Research
Issue number4
StatePublished - Oct 2020

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