Antimicrobial resistance in bacteria associated with porcine respiratory disease in Australia

Dayao, Denise Ann E., Gibson, Justine S., Blackall, Patrick J. and Turni, Conny (2014) Antimicrobial resistance in bacteria associated with porcine respiratory disease in Australia. Veterinary Microbiology, 171 1-2: 232-235. doi:10.1016/j.vetmic.2014.03.014

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Author Dayao, Denise Ann E.
Gibson, Justine S.
Blackall, Patrick J.
Turni, Conny
Title Antimicrobial resistance in bacteria associated with porcine respiratory disease in Australia
Journal name Veterinary Microbiology   Check publisher's open access policy
ISSN 0378-1135
Publication date 2014-06-25
Sub-type Article (original research)
DOI 10.1016/j.vetmic.2014.03.014
Open Access Status File (Author Post-print)
Volume 171
Issue 1-2
Start page 232
End page 235
Total pages 4
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Language eng
Formatted abstract
The porcine respiratory disease complex greatly affects the health and production of pigs. While antimicrobial agents are used to treat the respiratory infections caused by bacterial pathogens, there is no current information on antimicrobial resistance in Australian pig respiratory bacterial isolates. The aim of this study was to determine the antimicrobial resistance profiles, by determining the minimum inhibitory concentration of nine antimicrobial agents for 71 Actinobacillus pleuropneumoniae, 51 Pasteurella multocida and 18 Bordetella bronchiseptica cultured from Australian pigs. The majority of A. pleuropneumoniae isolates were resistant to erythromycin (89%) and tetracycline (75%). Resistance to ampicillin (8.5%), penicillin (8.5%) and tilmicosin (25%) was also identified. The P. multocida isolates exhibited resistance to co-trimoxazole (2%), florfenicol (2%), ampicillin (4%), penicillin (4%), erythromycin (14%) and tetracycline (28%). While all the B. bronchiseptica isolates showed resistance to beta-lactams (ampicillin, ceftiofur and penicillin), some were resistant to erythromycin (94%), florfenicol (6%), tilmicosin (22%) and tetracycline (39%). The incidence of multiple drug resistance (MDR) varied across the species - in B. bronchiseptica, 27.8% of resistant isolates showed MDR, while 9.1% of the resistant isolates in A. pleuropneumoniae, and 4.8% in P. multocida showed MDR. This study illustrated that Australian pig strains of bacterial respiratory pathogens exhibited low levels of resistance to antimicrobial agents commonly used in the pig industry.
Keyword Porcine respiratory disease
Antimicrobial susceptibility testing
Antimicrobial resistance
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Queensland Alliance for Agriculture and Food Innovation
Official 2015 Collection
School of Veterinary Science Publications
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Citation counts: TR Web of Science Citation Count  Cited 13 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 13 times in Scopus Article | Citations
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Created: Thu, 15 May 2014, 00:16:16 EST by Ms Justine Gibson on behalf of School of Veterinary Science