1. School of Veterinary Medicine, Murdoch University, Murdoch, WA 6150, Australia
2. Centre for Animal Production and Health, Murdoch University, Murdoch, WA 6150, Australia
3. Animal Care Services, University of Western Australia, Crawley, WA 6009, Australia
4. Brisbane Bird and Exotics Veterinary Service, Greenslopes, QLD 4120, Australia