Lublin A, Mechani S, Siman-Tov Y, Weisman Y, Horowitz H I, Hatzofe O
Division of Avian and Fish Diseases, Kimron Veterinary Institute, Bet Dgan, Israel.
Avian Dis. 2001 Jul-Sep;45(3):741-4.
An adult female bearded vulture (Gypaetus barbatus) in the Tel Aviv University Research Zoo was found dead without previous clinical signs. The predominant pathologic changes were considerable bloody content in the intestines and enlargement of the liver, which had a rubbery consistency with color changes. Microscopic lesions consisted of multifocal histiocytic infiltration in the liver. Newcastle disease virus (NDV) was isolated from a cloacal swab and from the lungs and liver. Intracerebral pathogenicity index of the virus, as estimated in 1-day-old chicks, was repeated three times and had an average value of 1.68, indicating a velogenic strain. Numerous Clostridium septicum bacteria were found on the intestinal surface, but bioassays in which they were orally administered into chickens and mice revealed that, even though they were heavily multiplied in the intestines, they were nonpathogenic. It seems that NDV, documented for the first time in a bearded vulture in Israel, was the likely cause of sudden death.
特拉维夫大学研究动物园的一只成年雌性胡兀鹫（Gypaetus barbatus）被发现死亡，生前没有明显临床症状。主要病理变化是肠道内有大量血性内容物，肝脏肿大，质地如橡胶且颜色改变。显微镜下病变表现为肝脏多灶性组织细胞浸润。从泄殖腔拭子、肺和肝脏中分离出新城疫病毒（NDV）。在1日龄雏鸡中评估的该病毒脑内致病指数重复测定了三次，平均值为1.68，表明是强毒株。在肠道表面发现大量败血梭菌，但对鸡和小鼠进行口服生物测定显示，尽管这些细菌在肠道内大量繁殖，但它们无致病性。以色列首次在胡兀鹫中记录到新城疫病毒，似乎它是导致这只胡兀鹫突然死亡的可能原因。
