Herpes Virus Flashcards
Herpes
Double stranded
Dna virus
Intranuclear inclusion bodies
Infectious laryngeotrachitis
Acute respiratory disease
Gallid alpha herpes virus (GaHV I)/
Infectious laryngotracheatis virus
Chickens of 4-18 weeks
Mortality of ILTV is due to
Occlusion of trachea by exudate or haemorrhage
Transmission of ILTV
1 direct contact through inhalation, droplet infection in conjunctiva
2 mechanical transmission
3infected flocks
Clinical signs of ILTV
1 mild coughing sneezing to nasal ocular discharge and loud gasping and coughing dyspnea depression
Characteristic is pump handle respiration
Severe clinical sign
Of ILTV
Headshake with coughing + blood exudate
Acute larynotracheatis signs
Blood
Mucus
Yellow caseous exudate in trachea
Hollow caseous cast in trachea
Acute phase of laryngotracheatis microscopic lesion
desquamative necrotising tracheatis
Diagnosis of tracheobronchitis
Histopathology study of trachea and conjuctiva
Intranuclear IB
Syncytia formation
Virus isolation
Embryonated chicken eggs
Pock lesions, cellcultures by CAM route
Viral vector recombinant vaccines in
Fowl pox and herpes viruse of turkeys
Duck plague
Known as duck viral enteritis
Anatid plague
Anatid alpha herpes virus /duck enteritis virus
Duck plague virus latency site
Trigeminal ganglion
Transmission duck plague
Direct contact
Through water(major)
Migratory birds