Lesson 11

Question 1

colonies are round, greyish, shiny and non- haemolytic

Answer 1

P. multocida

Question 2

colonies are haemolytic and odourless

Answer 2

M. hemolytica and M. granulomatis, B. trehalosi

Question 3

hemolytic Pasteurella specie

Answer 3

P. testudinis

Question 4

on MacConkey, they grow as pin point red colonies

Answer 4

M. haemolytica and B. trelahosi

Question 5

virulence factors of Pasteurella to avoid phagocytosis

Answer 5

fimbriae, surface fibrils and filamentous haemagglutinins

Question 6

capsules of Type A and B strains of Pasteurella

Answer 6

hyaluronic acid capsules

Question 7

P. multocida olonies of some pathogenic strains are mucoid due to

Answer 7

hyaluronic acid capsules

Question 8

Type D strains of Pasteurella capsule

Answer 8

heparin

Question 9

capsule of Type F strains of Pasteurella

Answer 9

chondroitin

Question 10

a cytotoxic protein that stimulates cytoskeletal rearrangements and growth of fibroblasts by Type D

Answer 10

PMT toxin

Question 11

virulence factors of M. haemolytica and B. trelahosi which may enhance colonization

Answer 11

adhesins

Question 12

leukotoxin at hgh concentration will cause

Answer 12

cytolysis

Question 13

sweetish odor

Answer 13

P. multocida

Question 14

Predisposing factors such as overwork, poor body condition and monsoon rains are important in its development

Answer 14

Hemorrhagic septicemia

Question 15

causes hemorrhagic septicemia in Asia, the Middle East and some southern European countries

Answer 15

Pasteurella multocida serotype B

Question 16

produce PMT toxin which cause atrophic rhinitis in pigs

Answer 16

P. multocida

Question 17

cause hemorrhagic septicemia in Africa

Answer 17

P. multocida Type E

Question 18

Older animals may have a degree of immunity from previous exposure, and can be latent carriers, with pasteurellae located

Answer 18

tonsillar crypts

Question 19

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

Answer 19

Shipping fever

Question 20

virulence factors of M. haemolytica and B. trelahosi which inhibits complement mediated destruction of
the organisms in serum

Answer 20

capsule

Question 21

alter bovine leukocyte functions and directly toxic for bovine endothelial cells

Answer 21

endotoxin of M. haemolytica and B. trehalosi

Question 22

pore-forming cytolysin that affects leukocyte

Answer 22

leukotoxin

Question 23

Both shipping fever and enzootic pneumonia of calves are associated with infection by

Answer 23

M. haemolytica and P. multocida

Question 24

Outbreaks of ovine pneumonic pasteurellosis are usually caused by

Answer 24

M. haemolytica

Question 25

tends to produce sporadic cases of pasteurellosis

Answer 25

P. multocida

Question 26

predispose animal to this disease if animal has respiratory viruses such as parainfluenza 3

Answer 26

pasteurellosis

Question 27

Toxigenic strains of P. multocida type D or A cause a severe, progressive form of

Answer 27

atrophic rhinits

Question 28

predisposing bacteria of atrophic rhinitis

Answer 28

Bordetella bronchiseptica

Question 29

etiologic agent of fowl cholera

Answer 29

P. multocida capsular types A and F

Question 30

common, recurring, purulent rhinitis in rabbits which is caused by type A strains of P. multocida

Answer 30

snuffles

Question 31

Associated with bovine pneumonic pasteurellosis (shipping fever)

Answer 31

P. multocida type A

Question 32

highly contagious avian pasteurellosis affecting both domestic and wild birds but especially turkeys

Answer 32

fowl cholera