Occurrence of Brachyspira hyodysenteriae in multiplier pig herds in Switzerland

Löbert geb. Sicken, Sandra; Zimmermann, Werner; Bürki, Sibylle; Frey, Joachim; Nathues, Heiko; Scheer, P.; Doherr, Marcus; Stalder, Ueli; Zeeh, Friederike (2016). Occurrence of Brachyspira hyodysenteriae in multiplier pig herds in Switzerland. Tierärztliche Praxis. Ausgabe G - Grosstiere, Nutztiere, 44(1), pp. 13-18. Schattauer 10.15653/TPG-150674

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OBJECTIVE: This research was aimed to determine the occurrence of Brachyspira (B.) hyodysenteriae in Swiss multiplier pig herds. MATERIALS AND METHODS: In a pilot study a direct real-time polymerase chain reaction (PCR) method for B. hyodysenteriae was compared to culture followed by PCR on 106 samples from three herds. Subsequently 40 multiplier herds were epidemiologically characterized and analysed for the presence of B. hyodysenteriae using direct PCR on 1412 rectal swabs. For external validation 20 swabs obtained from two positive conventional herds were analysed. RESULTS: The comparison of direct PCR with culture followed by PCR resulted in a moderate agreement (kappa index: 0.58). In the two conventional herds, 35% of the samples (7/20) tested positive. Samples from 39 multipliers tested negative. In one multiplier herd, 25% (9/36) of the samples tested PCR positive. Risk factors in the multiplier herd may have been rodents or birds, but not pig purchase. CONCLUSION AND CLINICAL RELEVANCE: B. hyodysenteriae have been detected in a Swiss multiplier herd, which underlines the threat of potential spread by replacement pigs. Consequently, a Brachyspira monitoring programme was established for Swiss multiplier herds.

Item Type:

Journal Article (Original Article)

Division/Institute:

05 Veterinary Medicine > Research Foci > Veterinary Public Health / Herd Health Management
05 Veterinary Medicine > Research Foci > Host-Pathogen Interaction
05 Veterinary Medicine > Department of Clinical Veterinary Medicine (DKV) > Swine Clinic
05 Veterinary Medicine > Department of Clinical Veterinary Medicine (DKV)
05 Veterinary Medicine > Department of Clinical Research and Veterinary Public Health (DCR-VPH) > Veterinary Public Health Institute
05 Veterinary Medicine > Department of Infectious Diseases and Pathobiology (DIP)
05 Veterinary Medicine > Department of Clinical Research and Veterinary Public Health (DCR-VPH)
05 Veterinary Medicine > Department of Infectious Diseases and Pathobiology (DIP) > Institute of Veterinary Bacteriology

UniBE Contributor:

Sicken, Sandra; Zimmermann, Werner; Bürki, Sibylle; Frey, Joachim; Nathues, Heiko; Doherr, Marcus and Zeeh, Friederike

Subjects:

500 Science > 570 Life sciences; biology
600 Technology > 630 Agriculture

ISSN:

1434-1220

Publisher:

Schattauer

Language:

English

Submitter:

Friederike Zeeh

Date Deposited:

02 Mar 2016 11:28

Last Modified:

02 Nov 2018 08:57

Publisher DOI:

10.15653/TPG-150674

PubMed ID:

26757784

BORIS DOI:

10.7892/boris.76567

URI:

https://boris.unibe.ch/id/eprint/76567

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