Abstract

Traditional culture and biochemical tests (CBT) were compared with PCR for sensitivity and detection of Brachyspira hyodysenteriae and Brachyspira pilosicoli in seeded faeces and clinical samples from diarrhoeic pigs. A duplex PCR system was developed based on primers detecting the tlyA-gene of B. hyodysenteriae and the 16S rRNA-gene of B. pilosicoli. Sensitivities for the PCR system were determined on seeded faeces, using DNA that had been recovered from primary cultures or extracted directly from faeces. Compared to CBT, PCR applied to DNA extracted directly from faeces lowered the sensitivity by a factor of 1000 to 10,000. B. hyodysenteriae and B. pilosicoli detection was compared for CBT and PCR using 200 clinical samples. CBT detected more B. hyodysenteriae isolates in the clinical samples than PCR, but fewer B. pilosicoli positive samples. An atypical strongly haemolytic isolate was detected only by CBT. (c) 2006 Elsevier B.V. All rights reserved

Published in

Journal of Microbiological Methods
2006, Volume: 66, number: 2, pages: 347-353
Publisher: ELSEVIER SCIENCE BV

SLU Authors

• Råsbäck, Therese

  • Department of Clinical Sciences, Swedish University of Agricultural Sciences
    

• Fellström, Claes

  • Department of Clinical Sciences, Swedish University of Agricultural Sciences
    

• Aspán, Anna

  • No organisation

UKÄ Subject classification

Animal and Dairy Science
Veterinary Science


Publication Identifiers

DOI: https://doi.org/10.1016/j.animet.2005.12.008

Permanent link to this page (URI)

https://res.slu.se/id/publ/10767