Birna Flashcards
Bursitis virus targets the premature B lymphocytes
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The bursitis virus causes per os infection
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Some Gumboro disease vaccines can be applied only besides yolk immunity
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Watery diarrhoea is typical clinical sign of Gumboro disease
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There are several virulence variants of bursitis virus
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Clinical signs of Gumboro disease can be seen in chickens younger than 8 weeks
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Bursitis virus is highly contagious
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Immunocomplex vaccines can be applied to prevent Gumboro disease
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Before vaccination against Gumboro disease the level of maternal immunity in the flock should be determined
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Anaemia and cyanosis can be clinical signs of Gumboro disease
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Vaccines are available to control Gumboro disease
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In the prevention of Gumboro disease in ovo vaccinations can be applied
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The bursitis virus can retain its infectivity for 1-4 months in the litter
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Bursitis virus infection can reduce the efficacy of vaccinations
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Bursitis virus infection results in immunosuppression
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Bursitis virus is shed in the faeces
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Infectious bursitis can predispose chicken to Fowl Paratyphoid
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Infectious bursitis is a very contagious disease
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Early IBDV infection damages the humoral immunity
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Anaemia and depression are frequent signs of infectious bursal disease
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The Infectious bursal disease virus (IBDV) is very resistant in the environment
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Infection of day-old chicken with IBDV may cause permanent immunosuppression
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Pathology lesions of the Infectious Bursal Disease can be similar to the Avian influenza
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Very virulent strains of the Infectious Bursal Disease virus (IBDV) may cause disease in chicken with maternally derived antibodies too
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