Difference between revisions of "Mannheimia haemolytica"
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Also known as: '''''Pasteurella haemolytica — M. haemolytica | Also known as: '''''Pasteurella haemolytica — M. haemolytica | ||
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''M. haemolytica'' is beta-haemolytic on blood agar and grows weakly on MacConkey agar. It is odourless. All are ''Mannheimia'' A biotypes and the strains often produce a cytotoxin, known as leukotoxin, which kills leukocytes of ruminants. Leukotoxin is a member of the RTX group toxins, and is probably largely responsible for the pathogenicity of the bacteria in septicaemia and pneumonia. | ''M. haemolytica'' is beta-haemolytic on blood agar and grows weakly on MacConkey agar. It is odourless. All are ''Mannheimia'' A biotypes and the strains often produce a cytotoxin, known as leukotoxin, which kills leukocytes of ruminants. Leukotoxin is a member of the RTX group toxins, and is probably largely responsible for the pathogenicity of the bacteria in septicaemia and pneumonia. | ||
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| − | + | |literature search = [http://www.cabdirect.org/search.html?rowId=1&options1=AND&q1=%22Mannheimia+haemolytica%22&occuring1=title&rowId=2&options2=OR&q2=%22Pasteurella+haemolytica%22&occuring2=title&rowId=3&options3=AND&q3=&occuring3=freetext&publishedstart=2000&publishedend=yyyy&calendarInput=yyyy-mm-dd&la=any&it=any&show=all&x=60&y=11 ''Mannheimia haemolytica'' publications since 2000] | |
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[[Category:Pasteurella_and_Mannheimia_species]] | [[Category:Pasteurella_and_Mannheimia_species]] | ||
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Latest revision as of 13:23, 18 July 2012
Also known as: Pasteurella haemolytica — M. haemolytica
Introduction
Mannheimia haemolytica is a species of the Mannheimia genus. It is the cause of epizootic pneumonia in cattle known as Shipping Fever, Transit Fever or pneumonic pasteurellosis. 90% is caused by Mannheimia haemolytica Biotype A, serotype 1 but also Pasteurella multocida. It is usually secondary to viral infections such as parainfluenza - 3 or IBR, bacterial infections such as Mycoplasma or environmental stress.
M. haemolytica may contribute to Enzootic pneumonia of calves; Enzootic pneumonia of lambs and peritonitis in sheep. It also causes gangrenous mastitis in sheep.
M. haemolytica is beta-haemolytic on blood agar and grows weakly on MacConkey agar. It is odourless. All are Mannheimia A biotypes and the strains often produce a cytotoxin, known as leukotoxin, which kills leukocytes of ruminants. Leukotoxin is a member of the RTX group toxins, and is probably largely responsible for the pathogenicity of the bacteria in septicaemia and pneumonia.
| Mannheimia haemolytica Learning Resources | |
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Mannheimia haemolytica publications since 2000 |
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