Characterisation of Australian isolates of Actinobacillus capsulatus, Actinobacillus equuli, Pasteurella caballi and Bisgaard Taxa 9 and 11.
OBJECTIVE
The objective of this work was to perform a comprehensive phenotypic characterisation of 16 isolates of bacteria previously identified as Actinobacillus equuli.


METHODS
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.


CONCLUSIONS
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.
Blackall
P J
PJ
Queensland Department of Primary Industries, Animal Research Institute, Yeerongpilly.
Bisgaard
M
M
McKenzie
R A
RA
D000187:Actinobacillosis / Q000453:epidemiology / Q000382:microbiology; D000188:Actinobacillus / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification; D000818:Animals; D001315:Australia / Q000453:epidemiology; D001921:Brain / Q000382:microbiology / Q000473:pathology; D006321:Heart / Q000382:microbiology; D006736:Horses; D007668:Kidney / Q000382:microbiology / Q000473:pathology; D008099:Liver / Q000382:microbiology / Q000473:pathology; D008168:Lung / Q000382:microbiology / Q000473:pathology; D009206:Myocardium / Q000473:pathology; D010325:Pasteurella / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification; D010326:Pasteurella Infections / Q000453:epidemiology / Q000382:microbiology / Q000662:veterinary; D010641:Phenotype; D011817:Rabbits; D013154:Spleen / Q000382:microbiology / Q000473:pathology