MT2 - Birna Flashcards
1) Bursitis virus targets the premature B lymphocytes
T
2) The bursitis virus causes per os infection
T
3) Meat type hybrids are more sensitive to Gumboro disease than layers
F
4) Clinical signs of Gumboro disease can be seen in chickens older than 8 weeks
F
5) Some Gumboro disease vaccines can be applied only besides yolk immunity
T
6) Watery diarrhoea is typical clinical sign of Gumboro disease
T
7) There are several virulence variants of bursitis virus
T
8) Clinical signs of Gumboro disease can be seen in chickens younger than 8 weeks
T
9) Bursitis virus is highly contagious
T
10) Immunocomplex vaccines can be applied to prevent Gumboro disease
T
11) Clinical signs of Gumboro disease can be seen in chickens younger than 8 days
F
12) Before vaccination against Gumboro disease the level of maternal immunity in the flock should be determined
T
13) Anaemia and cyanosis can be clinical signs of Gumboro disease
T
14) Bursitis virus causes the highest mortality in day old chicks
F
15) Viruses are available to control Gumboro disease
T
16) The bursitis virus is very sensitive to the environmental conditions
F
17) Bursitis virus causes disease only in chicken
F
18) The bursitis virus can retain its infectivity for 1-4 months in the litter
T
19) Both serotypes of bursitis virus are pathogenic
F
20) Bursitis virus infection can reduce the efficacy of vaccinations
T
Bursitis virus infection results in immunosuppression
T
22) Bursitis virus is shed in the faeces
T
