Gumboro Disease

Question 1

The bursitis virus causes per os infection

Answer 1

T

Question 2

Meat type hybrids are more sensitive to Gumboro disease than layers

Answer 2

F

Question 3

Clinical signs of Gumboro disease can be seen in chickens older than 8 weeks

Answer 3

F

Question 4

Some Gumboro disease vaccines can be applied only besides yolk immunity

Answer 4

T

Question 5

Watery diarrhoea is typical clinical sign of Gumboro disease

Answer 5

T

Question 6

There are several virulence variants of bursitis virus

Answer 6

T

Question 7

linical signs of Gumboro disease can be seen in chickens younger than 8 weeks

Answer 7

T

Question 8

Bursitis virus is highly contagious

Answer 8

T

Question 9

Immunocomplex vaccines can be applied to prevent Gumboro disease

Answer 9

T

Question 10

Clinical signs of Gumboro disease can be seen in chickens younger than 8 days

Answer 10

F

Question 11

Before vaccination against Gumboro disease the level of maternal immunity in the flock should be determined

Answer 11

T– gia na dis an tha valis hot vaccine epidi to hot theli high levels of maternal immunity

Question 12

Anaemia and cyanosis can be clinical signs of Gumboro disease

Answer 12

T

Question 13

Bursitis virus causes the highest mortality in day old chicks

Answer 13

F

Question 14

Vaccines are available to control Gumboro disease

Answer 14

T

Question 15

In the prevention of Gumboro disease in ovo vaccinations can be applied

Answer 15

T

Question 16

The bursitis virus is very sensitive to the environmental conditions

Answer 16

F

Question 17

Bursitis virus causes disease only in chicken

Answer 17

F

Question 18

The bursitis virus can retain its infectivity for 1-4 months in the litter

Answer 18

T

Question 19

Both serotypes of bursitis virus are pathogenic

Answer 19

F

Question 20

Bursitis virus infection can reduce the efficacy of vaccinations

Answer 20

T

Question 21

Bursitis virus infection results in immunosuppression

Answer 21

T

Question 22

Bursitis virus is shed in the faeces

Answer 22

T

Question 23

Infectious bursitis can predispose chicken to Fowl Paratyphoid

Answer 23

T

Question 24

In Europe only low virulence strains of infectious bursitis virus can be found

Answer 24

F

Question 25

Infectious bursitis is a very contagious disease

Answer 25

T

Question 26

Pigeons are the most susceptible to IBDV

Answer 26

F

Question 27

Early IBDV infection damages the humoral immunity

Answer 27

T

Question 28

The bursitis virus mostly causes germinative infection

Answer 28

F- Aerogenous/per os/conjunctival feaces contaminate egg shells and infection in hatchery

Question 29

IBDV type 2 is used for immunization of chicken against infectious bursal disease

Answer 29

F

Question 30

Ibdv is a zoonotic virus

Answer 30

F

Question 31

The infectious bursal disease virus is transmitted only vertically

Answer 31

F

Question 32

Anaemia and depression are frequent signs of infectious bursal disease

Answer 32

T

Question 33

Only inactivated vaccines can be used against infectious bursal disease

Answer 33

F

Question 34

The infectious bursal disease virus is very sensitive to detergents

Answer 34

F

Question 35

In Europe only low virulence strains of Infectious Bursal Disease Virus (IBDV) can be found

Answer 35

F

Question 36

The Infectious bursal disease virus (IBDV) is very resistant in the environment

Answer 36

T

Question 37

Infection of day-old chicken with IBDV may cause permanent immunosuppression

Answer 37

T

Question 38

Pathology lesions of the Infectious Bursal Disease can be similar to the Avian influenza

Answer 38

T-- but no cns signs in IBDV

Question 39

Young chicken can be immunized only with inactivated IBDV vaccines

Answer 39

F

Question 40

Very virulent strains of the Infectious Bursal Disease virus (IBDV) may cause disease in chicken with maternally derived antibodies too

Answer 40

T

Question 41

IBDV does not cause disease in adult chicken (over 2 months of age

Answer 41

T

Question 42

Fever, diarrhea and anemia are signs of the Infectious Bursal Disease

Answer 42

T

Question 43

Vaccines provide high level of protection against **all** IBDV strains

Answer 43

F(cross rxns but no cross protection)

Question 44

Clinical manifestations of infectious bursal disease are seen mainly in chicken between the age of 3 and 6 weeks

Answer 44

T

Question 45

Moderately attenuated (“hot”) IBDV vaccines are used for the immunization of young chicken without yolk immunity

Answer 45

F

Question 46

The infectious bursitis virus has more than one virulence variants

Answer 46

T

Question 47

The infectious bursitis virus causes anaemia

Answer 47

T

Question 48

The infectious bursitis virus can be isolated on CAM

Answer 48

T

Question 49

There is no vaccine available against infectious bursitis virus

Answer 49

F

Question 50

The resistance of infectious bursitis virus is very high

Answer 50

T

Question 51

The infectious bursitis virus spreads by mosquitoes

Answer 51

F

Question 52

IBDV causes immunosuppression in chicken between 2-8 weeks of age

Answer 52

T

Question 53

By disinfection of the eggshell we can prevent IBDV infection

Answer 53

T

Question 54

Infectious bursal disease causes severe illness, mainly in waterfowl

Answer 54

F

Question 55

The most frequent sign of infectious bursal disease is lameness

Answer 55

F

Question 56

Only attenuated live vaccines are effective against infectious bursal disease

Answer 56

F

Question 57

Several antigenic and virulence variants of infectious bursal disease virus are known

Answer 57

T

Question 58

The infectious bursitis is usually seen in 3 to 8 weeks-old flocks

Answer 58

T

Question 59

The most frequent sign of infectious bursal disease is lameness due to the inflammation of the subtendinal bursae

Answer 59

F

Question 60

The infectious bursitis virus is inactivated within 1-2 days in the environment

Answer 60

F

Question 61

A frequent sign of the infectious bursitis is encephalitis

Answer 61

F

Question 62

The infectious bursitis virus does not cause any damage in chickens under the age of two weeks

Answer 62

F--it causes but is less than 30% mortality. it does not cause in older than 8 weeks and most severity is between 2-8 weeks