Infectious Coryza in Poultry
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Questions and Answers

What is the purpose of incubating the culture in a candle jar?

  • To prevent contamination of the culture
  • To provide a warm and humid environment for the culture (correct)
  • To promote the growth of satellite colonies
  • To create an anaerobic environment for the culture
  • Why is it important to leave the premises vacant for two to three weeks after thorough cleaning and disinfection?

  • To prevent recontamination from any remaining A.paragallinarum antibodies
  • To allow time for the development of resistance in the new chicken stock
  • To eliminate all carrier birds from the premises
  • To allow for the removal of any residual bacteria or viruses (correct)
  • What is the purpose of using hemagglutination inhibition and immunodiffusion tests?

  • To determine the serotype of A.paragallinarum antibodies in serum (correct)
  • To detect the presence of A.paragallinarum in sinus exudate
  • To identify carrier birds in the flock
  • To diagnose the severity of avian coryza
  • Why should pullets on multiage infected farms receive two injections of the bacterin at 4-week intervals?

    <p>To immunize them against different serotypes included in the vaccine</p> Signup and view all the answers

    Why are erythromycin and oxytetracycline commonly used in layer operations?

    <p>To alleviate the severity of avian coryza in affected birds</p> Signup and view all the answers

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