Clinical and pathological studies of ducklingd experimentally infected with an isolate of Avian influenza A virus subtype H6N2
2008
Zarkov, I., Thracian University, Stara Zagora (Bulgaria) | Ivanov, D., Thracian University, Stara Zagora (Bulgaria) | Tsachev, I., Thracian University, Stara Zagora (Bulgaria)
Clinical and pathoanatomical studies were carried on thirty 28-day old Millary ducklings infected intravenously, tracheally and orally with an isolate of avian influenza A virus H6N2 obtained from wild ducks Anas plathyrynchos. With the objective to elucidate the pathogenesis of the isolate for this species, we determined and studied all the possible clinical findings and pathoanatomical lesions in ducklings under conditions of experimental viremia. The avian influenza A virus H6N2 isolate caused disturbances in body development and feathering, well demarcated pathoanatomical changes in the thymus and heart without a fatal terminal episode. Get together these results and the references from experiments with ducks inoculated with various isolates of type A influenza show that the different localization of lesions corresponds to the tissue tropism of the specific viral strain.
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