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| ===Overview ''Pasteurella''=== | | ===Overview ''Pasteurella''=== |
| | | |
− | *Found in the upper respiratory tract and gastrointestinal tract mucosa | + | *Common commensal of the upper respiratory tract and gastrointestinal tract mucosa of animals |
| *Usually opportunistic organisms, causing disease during times of stress, low resistance or concurrent infections | | *Usually opportunistic organisms, causing disease during times of stress, low resistance or concurrent infections |
| *Resist phagocytosis by their capsule | | *Resist phagocytosis by their capsule |
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| ===Bacteria Properties=== | | ===Bacteria Properties=== |
| | | |
− | *Short Gram-negative bacilli | + | *Short Gram-negative bacilli or coccobacilli |
| *Oxidase-positive | | *Oxidase-positive |
| *May show bipolar staining | | *May show bipolar staining |
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| ===''Pasteurella multocida''=== | | ===''Pasteurella multocida''=== |
| + | |
| + | *Large grey colonies on blood agar |
| + | *Not haemolytic |
| + | *Do not grow on MacConkey |
| + | *Four capsular serotypes, A,B,D,E and recently F |
| + | *Primary and secondary pathogen |
| + | *Causes Haemorrhagic Septicaemia in cattle |
| + | *Contributes to Atropic Rhinitis in pigs |
| + | *Causes septicaemia in chickens and turkeys known as folw cholera |
| + | *Involved in Snuffles (Pasteurellosis) in rabbits |
| + | *Responsible for secondary infections following primary viral and mycoplasmal infections, especially in the lungs, for example during pig enzootic pneumonia |
| | | |
| *Typa A | | *Typa A |
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| *Type D | | *Type D |
− | **Causes Atropic Rhinitis along with ''Bordetella bronchiseptica'' | + | **Causes Atropic Rhinitis along with ''Bordetella bronchiseptica'' in pigs |
| **Produces an osteolytic toxin, which stimulates osteoclast, inducing bone resorption | | **Produces an osteolytic toxin, which stimulates osteoclast, inducing bone resorption |
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