ranikhet disease Flashcards
infection by velogenic strain
acute form**
**dull depressed
viscerotropic velogenic causes hemorrhagic lesions
neurotropic velogenic
high mortality
respiratory and nervous signs
paralysis tremors torticoilis
mesogenic strain
- *less severe
- *marked loss of egg production
- *greenish watery diarrhoea
mild strains of virus
lentogenic and asymptomatic enteric
**inapparent respiratory infections
transmission of ranikhet disease
- **contaminated food and water
* **aerosols during incubation period
lesions of velogenic strain
**hemorrhagic lesions of proventiculus
diphtheric ulceration in intestine
pneumo encephalic form of ranikhet disease caused by
mesogenic strain
macroscopic lesions of velogenic form
- *hemorhage in intestine
- *petechea in proventriculus
- *enlarged cecal tonsils
macroscopic lesions of velogenic form
- *hemorhage in intestine
- *petechea in proventriculus
- *enlarged cecal tonsils
lesions in lower viral ndv include
- *confined to respiratory tract
- ***congestion and mucoid exudate in resp tract
- *airsacculitis
ovarian lesions in NDV
- *ovarian follicle —–hemorrhage
* **ovarian duct—heamorrhage discolouration
microscopic lesions in cns
non purulent encephalomyelitis with neuronal degeneration
**gliosis
microscopic lesions in vascular system
hyperemia
edema
hemorrhage
microscopic lesions resp tract NDV virus
***congestion
**edema
**cellular infiltration
air sacculitis
diagnosis of ndv
- *haemagglutination
- *HAEMAGGLUTINATION -INHIBITION TEST
**virus neutralisation test
**inoculation in chicken embryo allantoic route
