Flashcards in Avian Viruses Deck (10):
fowl diptheria, dyspnea, w/ bloody mucus and head shaking
Cancer of the nerves, usually seen in sciatic nerve, attacks teh T lymphocytes, assymetric paralysis, ataxia, graying of iris
psittacines, diarrhea, bright yellow feces
cutaneous small papules on the comb, wattles, and around the beak. Wet form: infection of the mucous membranes of the mouth, pharynx, larynx, and sometimes trachea.
Mortality for the wet form is significantly higher.
Severe respiratory disease in young chickens with high mortality. Adults there is marked decrease in egg production and soft shelled/malformed eggs are laid when laying resumes
Infectious Brochitis Virus
There are different clinical signs based on the strains. 1) Viscerotropic velogenic, 2) neurotropic velogenic, 3) mesogenic 4) lentogenic 5) asymptomatic enteric. 1,2,3 are considered official Newcastles disease.
Newcastle (paramyxovirus serotype 1)
enlarged bursa fabricus, necrotic lymphoid follicles
Infectious bursal disease virus
anorexia, lethargy, anemia, hemorrhage
Chicken Infectious Anemia
Most infections are mild or subclinical. Clinical signs include feather loss, abnormal pin feathers, abnormal mature feathers, and various beak abnormalaties. Disease is progressive; most birds die after feathers are malformed.
Psittacine beak and feather disease virus