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Characterisation of Australian isolates of Actinobacillus capsulatus, Actinobacillus equuli, Pasteurella caballi and Bisgaard Taxa 9 and 11 |
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| Authors: | PJ BLACKALL M BISGAARD RA MCKENZIE |
| Institution: | Queensland Department of Primary Industries, Animal Research Institute. Yeerongpilly QLD 4105;Department of Veterinary Microbiology. The Royal Veterinary and Agricultural University, DK-1870 Frederiksberg C. Copenhagen, Denmark |
| Abstract: | Objective The objective of this work was to perform a comprehensive phenotypic characterisation of 16 isolates of bacteria previously identified as Actinobacillus equuli. Design The 16 isolates that had been obtained from Australian animals – 15 from horses and one from a rabbit – were compared with reference strains of A equuli, A capsulatus, Pasteurella caballi and Bisgaard Taxa 9 and 11. Results The characterisation study demonstrated that only nine of the isolates were A equuli . The other isolates were identified as A capsulatus (the isolate from rabbit), P caballi (one isolate), Bisgaard Taxon 11 (two isolates) and Bisgaard Taxon 9 (one isolate). The final two isolates could not be assigned to any recognised species or taxa. Conclusion This study has highlighted the importance of a complete characterisation of Actinobacillus -like organisms isolated from horses and rabbits. The study represents the first time that A capsulatus, P caballi and Bisgaard Taxa 9 and 11 have been recognised as being present in Australia. |
| Keywords: | Actinobacillus equuli Actinobacillus capsulatus Pasteurella caballi characterisation |