The polymerase chain reaction(PCR) technique was used to determine virulent duck plague virus(DRV) in 100-dayold ducks infected artificially with DPV and infected naturally with DPV,and observe the histopathology changes of tissues and organs.

• 鸭瘟病毒(DPV)强毒经人工感染和同居感染成年鸭后；采用聚合酶链反应(PCR)检测为鸭瘟后；在不同时间段对各给织器官的病理组织损伤进行了观察.