Line 41: |
Line 41: |
| ===Diagnosis=== | | ===Diagnosis=== |
| | | |
− | * | + | *Colony characteristics@ |
| + | **''C. bovis'': lipophilic bacterium; small, white, dry, non-haemolytic colonies on plates inoculated with bovine milk |
| + | **''C. kutscheri'': white colonies; occasionally haemolytic |
| + | **''C. pseudotuberculosis'': small, white coloniess surrounded by narrow zone of complete haemolysis; colonies become dry and cream-coloured |
| + | **''C. renale'': small, non-haemolytic colonies after 24 hours; pigment produced after 48 hours |
| + | *Biochemical reactions: |
| + | **Certain strains of ''C. pseudotuberculosis'' reduce nitrates |
| + | **All pathogenic strains except ''C. bovis'' produce urease |
| + | *Enhancement of haemolysis produced by ''C. pseudotuberculosis'' when inoculated across a streak of ''Rhodococcus equi'' |