Fowl Cholera And Infectious Coryza Flashcards
(18 cards)
Fowl cholera is caused by?
Pasteurella multocida
Fowl cholera chronic cases may present with symptoms such as:
Swollen wattles
Lameness
Respiratory distress
A gram negative, nonmotile bacterium, is responsible for fowl cholera
Pasteurella multocida
Pasteurella multocida is classified into different serogroups based on the capsular antigens, with types
A
B
D
F
Fowl cholera is a widespread disease, affecting both?
Domestic and wild birds
Fowl cholera transmit via?
Direct contact with infected birds
Contaminated equipment
Environment
In fowl cholera it is a form in which rapid onset of mortality, often with no prior symptoms. Affected birds may show lethargy, loss of appetite, and respiratory distress.
Acute form
In fowl cholera it is a form which shows swelling of the wattles(chickens), torticollis, lameness, and conjunctivitis.
Chronic form
Fowl cholera acute form lesions:
Petechial hemorrhages in the liver, spleen, and heart.
Swollen liver and spleen with petechial or ecchymotic hemorrhages
Fowl cholera chronic form:
Abscesses in the joints, wattles, and lungs.
Caseous exudates can be found in the affected tissues
Fowl cholera localized lesions:
Fibrinous or caseous material in the sinuses, lungs, and peritoneum
A highly contagious respiratory disease in poultry caused by
Avibacterium paragallinarum
A gram-negative bacterium, is responsible for infectious coryza.
Avibacterium paragallinarum
Three serovars of Avibacterium paragallinarum
A
B
C
Clinical findings
Nasal discharge
Facial swelling and swollen infraorbital sinuses
Sneezing and coughing
Loss of appetite, decreased egg production, and decreased weight gain
Swollen infraorbital sinuses with serous to purulent exudate
Infectious Coryza lesions
Mucosal inflammation in the nasal passages and sinus cavities
In chronic cases, there may be fibrosis and scarring of the sinuses
