Pullorum, Fowl Typhoid Flashcards
What is the typical mortality rate in young chickens infected with Salmonella Pullorum?
Very high (approaching 100%)
In adult chickens infected with Salmonella Pullorum, what is most frequently observed?
No clinical signs
Which of the following avian species is NOT mentioned as being susceptible to Salmonella Pullorum infection?
a) Guinea fowl
b) Ducks
c) Quail
d) Sparrows
Ducks
The primary route of vertical transmission for Salmonella Pullorum
Transovarian transmission
Transmission of Salmonella Pullorum between farms is primarily due to?
Poor biosecurity measures
What is a common clinical sign observed in young chickens (less than 4 weeks old) with Pullorum Disease?
Whitish fecal pasting around the vent
Survivors of Pullorum Disease in young birds often become?
Asymptomatic carriers with localized ovarian infection
A classic lesion observed in the internal organs of young birds with Pullorum Disease
Firm, cheesy material in the ceca (cecal cores
What type of material is often found in the ovarian follicles of adult carrier chickens with Pullorum Disease?
Caseous (cheesy) contents
The causative agent of Fowl Typhoid
Salmonella Gallinarum
Compared to Pullorum Disease in mature flocks, Fowl Typhoid has a:
a) Much lower tendency to spread
b) Similar tendency to spread
c) Much greater tendency to spread
d) No tendency to spread
Much greater tendency to spread
Common clinical signs in older birds with Fowl Typhoid
Pale appearance and dehydration
A characteristic lesion in older birds with Fowl Typhoid
Swollen, friable, and often bile-stained liver
National Poultry Improvement Plan testing procedure is used for the diagnosis of?
Pullorum Disease and Fowl Typhoid
Which of the following is a similarity between Pullorum Disease and Fowl Typhoid?
a) The causative agent is the same.
b) Mortality in older birds is typically very high.
c) Both can be egg-transmitted.
d) There are highly effective vaccines available in the USA for both.
Both can be egg-transmitted.
Pullorum disease was known as?
Bacillary white diarrhea
Pullorum vertically transmitted cause very high mortality rates in young chickens and turkeys within the first ____ weeks after hatching.
2–3
True or False: S Pullorum infection in mammals is rare, although experimental and natural infections have been reported.
True
Age of birds most commonly affected by S Pullorum
< 4 weeks old or younger
Describe some lesions seen in young birds affected by S Pullorum
- Unabsorbed yolk sacs
- Classic gray nodules in visceral organs
- Cecal cores
- Raised plaques in the mucosa of lower intestine
The localized infection of the ovary in asymptomatic carrier hens with Pullorum Disease can lead to?
Shedding of Salmonella Pullorum into the eggs.
The presence of “cecal cores” is more characteristic of the lesions seen in young birds with?
Pullorum Disease
Enlarged spleen and kidneys are more typically observed as gross lesions in?
Older birds with Fowl Typhoid
Unabsorbed yolk sacs are a characteristic lesion in?
Acute cases of Pullorum Disease in young birds
