Exam 3: Avibacterium Flashcards
What causes Infectious coryza
Avibacterium paragallinarum
T/F. A. paragallinarum is NAD dependent
T
What does A. paragallinarum cause in chickens
rhinitis and sinusitis
VF of A. paragallinarum
Capsule
Adhesins
Endotoxin
Fe acquisition
How is A. paragallinarum transmitted
Water
Who is most susceptible to A. paragallinarum
stressed
C/S of acute A. paragallinarum
General
anorexia
conjunctivitis
C/S of subacute A. paragallinarum
Sinitis with pus
edema of head and neck
Dx A. paragallinarum
Bacterial culture
Tx A. paragallinarum
Abx. must be fast
Who becomes infected with Ornithobacterium rhinotracheale
Poultry
Predisposing factors of O. rhinotracheale
- stress
- high density
- ventilation
pathogenesis of O. rhinotracheale
Nose> Trachea> airsac> lung
C/S of O. rhinotracheale
- sneezing
- nose exudate
- Coughing
- edema
Tx: of O. rhinotracheale
bacterial culture
Why is culture difficult fo O. rhinotracheale
Slow growth
fequently overgrown by other bacteria
needs CO2
WHy is ELISA not common for O. rhinotracheale dx
Only serotype A
How do you Tx O. rhinotracheale
abx
Who becomes infected with Actinobacillus pleuropneumoniae
pigs less than 6mo
What are the two biotypes of A. pleuropneumoniae
Biotype 1: NAD Dependent
Biotype 2: NAD independent
How many serotypes of A. pleuropneumoniae are there
16
What is the purpose of S. aureus when culturing A. pleuropneumoniae
To provide NAD
How is A. pleuropneumonia spread
direct contact
aerosol
ventilation
Where is A. pleuropneumoniae carried by carriers
Nose
Tonsils
long noduli
What is the major predisposing factor for A. pleuropneumoniae
Stress
What Exotoxin is produced by A. pleuropneumoniae
Apx toxin
VF of A. pleuropneumoniae
- Fimbrae
- TBP
- Capsule
- LPS
- OMP
- Exotoxin Apx
- Enxymes
- HSP
What are the enzymes produced by A. pleuropneumoniae
Protease
Cu
Zn
SOD
C/S of A. pleuropneumoniae
Resp distress
General symptoms
What 3 things are included in vacc. for A. pleuropneumoniae
- Type !V fimbriae
- Transferin binding p
- Apx toxins
Dx A. pleuropneumoniae
- C/s
- Autopsia
- Bacterial culture
How do you detect carriersof A. pleuropneumoniae
PCR
Swab from nose or tonsils
Where is A. suis carried in pigs
tonsils and vagina
A. suis is pathogenic for ____
mice
C/S of A. suis
young: acute mortality
Weaning: General symptoms and resp. distress
Adult: abscesses, fever
How do you dx A. suis
Bacterial culture
Tx of A. suis
Abx
What are the two subspecies of A. equuli
- Haemolyticus (horse)
2. equuli (horse and pig)
Where is A. equuli carried?
mouth and GIT
What toxins are produced by A. equuli
AQX
C/s of A. equuli
Bronchitis
Pleuritis
Pneumonia
What causes sleepy foal dz
A. equuli
C/S of sleepy foal dz
septicaemia
enteritis
slimy pus
What happens when adult horses are infected with A. equuli
abortions of sleepy foals
where does A. equuli frequently localize?
joints
What causes Wooden tongue
A. lignieresii
A. lignieresii is and inhabitant of ___
nasopharynx
What organ is most effected by A. lignieresii
tongue
What bacterium causes a capsule full of pus to form on the tongue
A. lignieresii
The pus caused by A. lignieresii contains ____ granules
sulfur
How do you dx A. lignieresii
Histology
microscopy of granules