Avian Herpes Flashcards
The infectious laryngotracheitis is seen only in young chickens
F
not only chicken - quails turkey peacocks pheasants
but also most common after 6 weeks old
Diarrhoea is frequent in infectious laryngotracheitis of chickens
F
local infection in the upper third of the respiratory tract
Infectious laryngotracheitis virus strains may differ in virulence
T
low and high mild and typical forms
Encephalitis is a frequent complication in Infectious Laryngotracheitis of chickens
F
Ducks are the most susceptible to infectious laryngotracheitis virus
F
The infectious laryngotracheitis causes pseudomembrane formation in the oesophagus
F
diphtheroid Pseudomembranes in duck plague
ILT= cheesy plugs, haemorrhages, fibrin precipitations
Chickens above 6 weeks of age are not susceptible to infectious laryngotracheitis
F
The infectious laryngotracheitis can cause viraemia and pneumonia in young
F
Conjunctivitis is a frequent sign of infectious laryngotracheitis
T
Infectious laryngotracheitis virus is typically transmitted by the germinative route
F
Infectious laryngotracheitis can be deadly in chickens
T
Infectious laryngotracheitis is most frequently seen in day-old chickens
F
Infectious laryngotracheitis virus is shed mainly with faeces
F
Infectious Laryngotracheitis virus replicates in the liver of cats
F
Infectious Laryngotracheitis virus replicates in the upper respiratory tract
T
Germinative route is the most important factor in the transmission of the Infectious Laryngotracheitis virus
F
Tracheal lesions of Infectious Laryngotracheitis may be similar to those of fowl pox
T
The Infectious Laryngotracheitis virus does not cause viraemia
T
Infectious Laryngotracheitis is most frequently seen in day-old turkey
F
Infectious Laryngotracheitis virus is present worldwide
T
Infectious Laryngotracheitis usually occurs clinically under 6 weeks of age
F
Infectious Laryngotracheitis causes changes in the larynx and upper airways
T
Infectious Laryngotracheitis virus invades the kidneys after viraemia
F
Infectious Laryngotracheitis of poultry spreads germinatively
F
Infectious Laryngotracheitis also occur in Hungary
T
Infectious Laryngotracheitis causes eggshell deformation
F
Infectious Laryngotracheitis frequently damages the oviduct of hen
F
Infectious Laryngotracheitis can be deadly in chickens
T
Mortality of infectious laryngotracheitis can go up to 50%.
T
In case of viraemia the GaHV2 spreads to fowl’s organs in macrophages
T
Transient paralysis form of Marek’s disease can be present in 6-week-old chicken
T
Infection of Marek’s disease can occur in hatchery
T
The vaccines of Marek’s disease are not efficient
F
The turkey herpesvirus causes cross immunity against Marek’s disease
T
Turkey Herpes virus can be used for vaccination against Marek Disease
T
Lymphoproliferative form of Marek’s disease can be present in 6-week-old chicken
T
Lymphoproliferative form of Marek’s disease can be present in hens (older age).
F
Clinical signs of Marek’s disease present rare, because of vaccination
T
vaccination is effective
Lymphoproliferative form of Mareks disease is a chronic disease
F
The duck herpesvirus causes cross immunity against Marek disease
F
The free virions spread to organs independent of cells in the case of Marek disease
F
Transient paralysis form of Mareks disease can be present in hens
F
hens are old
transient paralysis 4-7 weeks
Lymphoproliferative form of Mareks disease is an acute disease
T
Neurological form of Mareks disease can be present in 4 week old chicken
F
There is in ovo vaccine against Mareks disease
T
Intake of GaHV2 happens most frequently per os
F
virions in the air
Germinative infection does not occur in Mareks disease
T
Germinative infection does occur in Mareks disease
F
In case of viraemia the GaHV2 spreads to fowl’s organs in red blood cells
F
The acute form of Mareks is primarily a tumour formation
T
Marek disease is usually seen in chickens below 2 weeks of age
F
Marek disease virus is shed with faeces in high titres
F
Signs of Marek disease may be very similar to reticuloendotheliosis signs
T
The Marek disease virus survives for long in the environment
T
Marek disease is caused by turkey herpesvirus
F
Transient Marek paralysis may lead to visceral form
T
Transient paralysis by Marek’s disease usually ends in full recovery
F
death or visceral
The chronic form of Marek disease is characterized by neurological disorders
T
The chronic form of Marek disease is due to circuses of higher virulence
F
Marek disease is the result of air born infection
T
Marek disease usually starts as an airborne infection
T
Free Marek virus particles are shed from the feather follicles
T
The Marek’s disease virus may survive in the environment for several months
T
Marek’s disease is most frequently seen in geese and ducks
F
chicken and recently we found tumors in turkeys
Free virions of the Marek’s disease virus are formed in the feather follicle epithelial cells
T
Humoral immunity plays the central role in the host’s defence against the Marek’s disease virus
F
As MDV is a cell-associated herpes virus and is strictly intracellular, antibodies should not have a major role in the protective immunity against MDV infection.
The neurological form of the Marek’s disease is seen only in day-old chicks
F
Chicken shed the Marek’s disease virus via feather follicular epithelial cells
T
The pathological lesions of acute Marek’s disease and reticuloendotheliosis can be similar
T
Conjunctivitis is a frequent sign of acute Marek’s disease
F
The Marek ́s disease virus is transmitted by inhalation
T
Marek ́s disease virus can ́t be prevented by vaccination, because it ́s immunosuppressive
F
The pathology lesions of acute Marek ́s disease and avian leucosis can be similar
T
The Marek ́s disease virus causes immunosuppression
T
The acute form of Marek ́s disease is characterized by lymphoid cell proliferation
T
The neurological form of Marek ́s disease has a mass appearance
F
The highly virulent strains of Marek ́s disease may cause tumours in turkey
T
The incubation time of acute Marek ́s disease is 1-2 days
F
4-6 weeks and chronic 0.5-1 year
The neurological form of Marek ́s disease leads to significant liver degeneration
F
Both serotypes of the Marek ́s virus cause disease in geese
F
North America is free of Marek ́s disease
F
Marek’s disease only occurs in domestic fowl.
T
Marek’s disease spreads primarily via the aerogenous route
T
Marek’s disease virus is shed mainly via the faeces
F
Marek ́s disease in the blood multiplies in the endothelial cells
F
Marek ́s disease is a beta herpes virus
F
Marek’s disease primarily targets day old chickens
F
The neoplastic form of Marek disease is caused by high virulence strains
T
Vaccination is used for the prevention of Marek ́s disease
T
The neoplastic form of Marek’s is caused by low virulence strains
F
We can differentiate Marek’s disease from reticuloendotheliosis only by lab diagnostics methods
T
Prevention against Marek ́s: no measures needed as the disease remains mostly symptomless
F
General preventative measures and vaccination of day-old chickens must be used for the prevention of Marek’s disease
T
also in ovo vaccination
Live attenuated strains are used for vaccination against Marek ́s disease
T
No vaccination is needed against Marek’s disease
F
The highly virulent strains of Marek’s disease may cause tumors in turkeys
T
Marek’s disease viruses are uniform in their virulence
F
Highly virulent Marek’s disease viruses may break through vaccine induced protection
T
Conjunctivitis is a frequent sign of duck viral enteritis
T
Only sporadic clinical cases of duck viral enteritis are seen in an affected flock
F
mass mortality fast dead birds floating
Mallards may transmit the duck enteritis virus to domestic ducks kept on lakes
T
Liver dystrophy is a frequent lesion of duck viral enteritis (duck plague
T
Wild ducks may be persistently infected with duck plague (duck enteritis) virus
T
Duck plague virus may be shed life long by animals recovered from the disease
T
Duck plague (viral enteritis) can’t cause high mortality without secondary bacterial infection
F
Duck plaque and duck viral enteritis are two names of the same disease
T
Duck viral enteritis is seldom fatal
F
Treatment is the most effective control method for duck viral enteritis
F
Duck plague is more severe in wild birds than in domestic ducks
F
Duck plague virus damages blood vessel endothelium
T
Duck plague only affects young ducklings
F
Duck plague is only seen in day old ducklings
F
Duck viral enteritis is usually mild, osmotic diarrhoea
F
Duck plague infects exclusively domestic and wild ducks
F
Antibiotic treatment is the most effective control method for Duck Viral Enteritis
F
Beak deformity is a typical sign of Duck Plague
F
Muscovy duck are resistant to the Duck Viral Enteritis
F
Duck Plague/Duck viral Enteritis cause high mortality in all ages
F
ducklings less susceptible
Duck Plague/Duck viral Enteritis clinical signs in young ducks are only seen in birds up to 4 weeks of age
F
Vaccines containing a live attenuated strain can be used for prevention against Duck Plague
T
Duck Plague/Duck viral Enteritis vaccination is not needed as clinical signs are mild
F
Duck Plague virus can “settle” in wild ducks
T
Duck Plague is an outbreak of Avian influenza in ducks, with a host-adapted version of the virus
F
Duck Plague only causes hepatitis in young ducks
F
Duck Plague only causes disease in ducks and geese
F
also swans
Duck Plague virus causes high mortality in both old and young birds
F
mainly old
Duck Plague also affects geese
T
Duck Plague is a disease of young ducks only
F
Duck Viral Enteritis can affect all age groups
T
Depression, respiratory signs and bloody diarrhoea are main signs of Duck Plague
T
In most cases the Duck Plague disease remain symptomless
F
Duck Plague is more severe in wild birds than domestic ducks
F
Pigeon herpesvirus mainly causes encephalitis in adult pigeons
F
Pigeon herpesvirus infections usually result a haemorrhagic deadly disease
F
Pigeon herpesvirus is characterised by focal necrosis in the liver in pigeons
T
Pigeon herpesvirus kills mostly day old pigeons
F
later in life infection has CS
day old protected from maternal yolk immunity
Pigeon herpesvirus infection causes feather development problems
F
Pigeon herpesvirus infections mainly affect young pigeons
T
Pigeon herpesvirus mainly causes encephalitis in adult pigeons
F
Pigeon herpesvirus infection is frequently combined with adenovirus and circovirus infection
T
Pigeon herpesvirus may cause respiratory disease in young pigeons
T
Pigeon herpesvirus causes conjunctivitis, rhinitis, pharyngitis and diarrhoea in the acute stage
T
Pigeon herpesvirus infection is related to Marek’s disease
T
Mardivirus genus
Pigeon herpesvirus has the highest mortality in day-old pigeons
F
Diarrhoea and nasal discharge are common in Pigeon herpesvirus infections
T
