摘要
本文根据流行病学、临床症状和病理变化观察表明:鸭病毒性肝炎一般发生于3周龄以内的雏鸭,死亡高峰集中在10～14d 龄之间;临床上表现为发病突然,传播迅速,死后呈典型的角弓反张姿态;眼观病变主要是肝脏肿大和斑驳状出血;组织学检查,见肝细胞高度脂肪变性和坏死,以及胆管上皮增生和不同程度的炎性细胞浸润。电镜观察:在肝细胞核内发现有类圆形颗粒,直径为40nm,疑为病毒样粒子。
The article gave a detailed description on the epidemiology,symptoms and pathological changes of DVH.The result showed that the disease usually takes place in duckling within three week age and the death peak concentrates mainly on the ducks aged ten to fourteen days.Clinical manifestations are the sudden onset of the disease,quick spreading and the typical position of opisthotonus of the dead birds.Pathological changes are mainly liver swelling, petechia and ecchymosis,severe fatty degeneration and necrosis of liver cells, bile duct epithelium hyperplasia and infiltration of inflammatory cells to different extent.The electro-microscopic observetion showed that there are round pellets(40nm in diameter)in the nucleus of the liver cell.The pellets are larger than ribosomes.This kind of pellets are suspected to be virus particles.
关键词
雏鸭
鸭
病毒性肝炎
病理变化
Duck virus hepatitis
pathological change
