A.paragallinarum Growth Requirements

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Questions and Answers

What are the typical signs of A. paragallinarum infection in birds?

  • Oculonasal discharge and conjunctivitis (correct)
  • Edema of the feet
  • Severe itching
  • Wing discoloration

How long do respiratory signs usually persist in birds affected by A. paragallinarum?

  • Only a few weeks (correct)
  • Several days
  • Less than a week
  • Several months

What is the typical morbidity like in a flock affected by A. paragallinarum?

  • No noticeable change in morbidity
  • High morbidity with rapid onset (correct)
  • Low morbidity with rapid onset
  • Low morbidity with gradual onset

What is the typical appearance of Gram stained sinus exudate from birds affected by A. paragallinarum?

<p>Bipolar-staining rods (D)</p> Signup and view all the answers

How does A. paragallinarum appear on blood agar with a Staphylococcus aureus nurse colony?

<p>As dewdrop-like satellite colonies (A)</p> Signup and view all the answers

What is the main requirement for the growth of A. paragallinarum?

<p>V-factor (nicotinamide adenine dinucleotide) (A)</p> Signup and view all the answers

How does A. paragallinarum persist outside of the host?

<p>For only a few days (C)</p> Signup and view all the answers

How can A. paragallinarum antibodies in serum be detected?

<p>Hemagglutination inhibition and immunodiffusion tests (C)</p> Signup and view all the answers

What is the typical incubation period for the development of signs and lesions in chickens infected with A. paragallinarum?

<p>3-5 days (A)</p> Signup and view all the answers

How can chickens be immunized to protect against A. paragallinarum?

<p>Vaccinating with commercial bacterins containing the specific serotype (C)</p> Signup and view all the answers

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