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

Bibliographical note

Funding Information:
The author(s) declare no potential conflicts of interest with respect to the research, authorship, and/or publication of this article. Drs. Fano and Sponheim are employed by Boehringer Ingelheim Animal Health USA Inc. However, no commercial products were evaluated in this investigation. Dr. Singer has received funding from Boehringer Ingelheim Animal Health USA Inc.

Publisher Copyright:
© 2020, Canadian Veterinary Medical Association. All rights reserved.


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