人工感染鸡传染性喉气管炎的病理组织学观察

采用人工感染的方法诱发鸡传染性喉气管炎,注射含传染性喉气管炎病毒鸡胚尿囊液后3d发病,其发病率为95%,主要症状为呼吸困难、气喘、咳出血样渗出物,剖检以喉头气管有黄白色假膜为特征,受侵害的气管粘膜肿胀、出血,导致糜烂,以致鸡死亡,死亡率为25%。分别取病死鸡的气管、肺脏、心脏、肝脏、肾脏和脾脏,采用石蜡包埋,HE染色法,在显微镜下进行病理组织学观察。结果显示:实质器官为渗出性炎症;上皮细胞肿胀、变性、坏死、脱落和血液循环障碍。

STUDY ON MORPHOPATHOLOGY OF ARTIFICIALLY INFECTED INFECTIVE LARYNGOTRACHEITIS

Infective Laryngotracheitis were injected subcutaneously into urinary vesicle of chicken embryos and the incidence of this disease was 95%.This disease was characterized with the following signs: labored breathing, asthma, coughing out exudate with blood, trachea with yellow-white untrue mucosa, the disoperative trachea mucosa swelling, bleeding and becoming rotten; The death of rate was 25%.The trachea, lung, heart, liver, kidney and spleen of dead chicken were imbedded with paraffin and stained with H.Z in order to study their histopathologicil lesion with light microscope.The results showed that parenchymatous organs were inflamed and effused; the epithelial cells were tumescent, denatured and necrobiotic; and the blood circulation was obstructed.