BB LRGPHOR Ch13 - Rabbit Bacterial Diseases Flashcards
- What is the most common bacterial pathogen of laboratory rabbits?
Pasteurella multocida
- True or False: Pasteurellosis in rabbits usually begins in the nasal cavity following a carrier state, then spreads to other parts of the respiratory system by direct extension.
True
- Transmission of Pasteurella multocida usually occurs by the __________ route.
oral or respiratory
- The most common clinical manifestation of rabbit pasteurellosis is:
“snuffles” (rhinitis)
- True or False: Animals with negative nasal cultures can be accepted as Pasteurella-free.
False-is prudent to perform 3 sequential cultures before accepting an animals as Pasteurella-free because approximately 30%jof infected animals may not be detected by a single culture.
What has been suggested as the drug of choice for treatment of Pasteurella-associated rhinitis or conjunctivitis, since there is a high rate of response when the drug is administered.
enrofloxacin
- The term enterotoxemia is used to refer to enteropathy caused by toxigenic micro-organisms of the genus _________.
Clostridium
- What group of rabbits is most susceptible to Clostridium enterotoxemia?
recently weaned rabbits
- What is the most characteristic gross finding of Clostridium enterotoxemia?
Petechial and ecchymotic hemorrhages on the serosal surface of the cecum
- _______ is the causative agent of Tyzzer’s disease.
Clostridium piliforme
- Which animal can be housed with rabbits to identify carriers of Clostridium piliforme?
Gerbils-are particularly susceptible to Clostridium piliforme infections. Gerbils can be expected to develop histologically evident Tyzzer’s disease when exposed to spores in the feces.
- What is the causative agent of Pseudotuberculosis?
Yersinia pseudotuberculosis
- The blue-green discoloration caused by ________ produced by the Pseudomonas aeruginosa organism.
pyocyanin
- Virulent strains of Staphlococcus aureus possess which gene that mediates production of the extracellular toxin?
enterotoxin gene cluster (egc)
- Which animal is considered to be the natural host for Chlamydophilia caviae?
guinea pig
- Which bacteria is the most common cause of mandibular & maxillary abscesses in rabbits?
Fusobacterium nucleatum
- True or False: Brucellosis is rare in domestic rabbits but common in wild lagomorphs, especially members of the genus Lepus.
True
- Which animal is used to isolate Franscisella tularensis by intraperitoneal injection of the agent?
guinea pig
- _______ is the only significant cause of tularemia in Europe whereas _________ or __________ subspecies can cause tularemia in North America.
F. holartica, F. tularensis, F. holartica
- Which animal(s) are thought to be the natural reservoir of Brucella suis?
Wild boars & Hares
- Enteropathogenic Escherichia coli uses an outer membrane protein known as _______ to induce enterocyte effacement and promote intimate bacterial attachment to the host cell.
intimin
- A presumptive diagnosis of rabbit colibacillosis can be made by demonstration of __________ in intestinal epithelium.
bacterial attachment and effacement of intestinal epithelium
- True or False: Rabbits are an important reservoir of Tuberculosis.
True
- Which group of rabbit is most susceptible to Listeriosis?
pregnant females
- Which animal is the primary source of human exposure for Tularemia?
rabbits
- The susceptibility of rabbits to staphylococci has made the rabbit an experimental model for which type of infections?
orthopedic & ophthalmic infections
- _________ is the causative agent of Necrobacillosis or Schmorl’s disease in rabbits.
Fusobacterium necrophorum
- Which disease in rabbits is characterized by inflammatory lesions of the genitalia?
Treponema paraluiscuniculi
- _______ is the drug of choice for treatment of treponematosis in rabbits.
Penicillin
- What are the characteristics of Pasteurella multocida
Gram-negative nonmotile coccobacillus. Historically of serogroup A
- What are the characteristics of Clostridium piliforme
Gram-negative, spore-forming, motile, obligate intracellular rod shaped bacterium
- Clinical signs of Tyzzer’s disease
profuse watery to mucoid diarrhea
- Tyzzer’s disease is most commonly seen in what age rabbits?
3-8 weeks
- Ernst Tyzzer first described Clostridium piliforme in what animal?
Japanese waltzing mouse
What is the mortality rate of rabbits clinically affected by C. piliforme?
90-95%
Common pathological lesions of Tyzzer’s disease
Intestinal - mucosal necrosis, serosal edema of distal ileum, cecum, proximal colon Liver - white spots of focal necrosis Heart - white streaks