Abstract
A total of 286 isolates of Pseudomonas maltophilia was collected from sheep exhibiting brown or yellowish fleece rot and from fly-strike lesions. Enzyme activities for 10 of the isolates were examined by plate tests and with the API ZYM system and compared with the enzymatic profile of a human type strain of P. maltophilia. The fact that ovine isolates of P. maltophilia are biochemically similar to pathogenic human strains suggests there may be an association between this organism and the brown to yellow type of fleece rot.