Lesson 11 Flashcards
colonies are round, greyish, shiny and non- haemolytic
P. multocida
colonies are haemolytic and odourless
M. hemolytica and M. granulomatis, B. trehalosi
hemolytic Pasteurella specie
P. testudinis
on MacConkey, they grow as pin point red colonies
M. haemolytica and B. trelahosi
virulence factors of Pasteurella to avoid phagocytosis
fimbriae, surface fibrils and filamentous haemagglutinins
capsules of Type A and B strains of Pasteurella
hyaluronic acid capsules
P. multocida olonies of some pathogenic strains are mucoid due to
hyaluronic acid capsules
Type D strains of Pasteurella capsule
heparin
capsule of Type F strains of Pasteurella
chondroitin
a cytotoxic protein that stimulates cytoskeletal rearrangements and growth of fibroblasts by Type D
PMT toxin
virulence factors of M. haemolytica and B. trelahosi which may enhance colonization
adhesins
leukotoxin at hgh concentration will cause
cytolysis
sweetish odor
P. multocida
Predisposing factors such as overwork, poor body condition and monsoon rains are important in its development
Hemorrhagic septicemia
causes hemorrhagic septicemia in Asia, the Middle East and some southern European countries
Pasteurella multocida serotype B
produce PMT toxin which cause atrophic rhinitis in pigs
P. multocida
cause hemorrhagic septicemia in Africa
P. multocida Type E
Older animals may have a degree of immunity from previous exposure, and can be latent carriers, with pasteurellae located
tonsillar crypts
characterized by severe bronchopneumonia and pleurisy, occurs most commonly in young cattle within weeks of being subjected to severe stress, such as transportation, assembly in feedlots and close confinement
Shipping fever
virulence factors of M. haemolytica and B. trelahosi which inhibits complement mediated destruction of
the organisms in serum
capsule
alter bovine leukocyte functions and directly toxic for bovine endothelial cells
endotoxin of M. haemolytica and B. trehalosi
pore-forming cytolysin that affects leukocyte
leukotoxin
Both shipping fever and enzootic pneumonia of calves are associated with infection by
M. haemolytica and P. multocida
Outbreaks of ovine pneumonic pasteurellosis are usually caused by
M. haemolytica
tends to produce sporadic cases of pasteurellosis
P. multocida
predispose animal to this disease if animal has respiratory viruses such as parainfluenza 3
pasteurellosis
Toxigenic strains of P. multocida type D or A cause a severe, progressive form of
atrophic rhinits
predisposing bacteria of atrophic rhinitis
Bordetella bronchiseptica
etiologic agent of fowl cholera
P. multocida capsular types A and F
common, recurring, purulent rhinitis in rabbits which is caused by type A strains of P. multocida
snuffles
Associated with bovine pneumonic pasteurellosis (shipping fever)
P. multocida type A
highly contagious avian pasteurellosis affecting both domestic and wild birds but especially turkeys
fowl cholera
