鸭传染性产蛋减少症(暂定名)的病原分离初报  

THE PRIMARY STUDY ON VIRUS ISOLATION OF DUCK INFECTIOUS EGG FAILINGS

作　　者：廖敏[1] 牟小东[1] 耿阳[1] 边葶苈[1] 陆新浩 陈秋英 任祖伊 丁铲[3] 周继勇[1] 

机构地区：[1]浙江大学农业部动物疫病病原学与免疫控制重点开放实验室,杭州310029 [2]浙江省余姚禽畜病防治研究所,余姚315400 [3]中国农业科学院上海兽医研究所,上海200241

出　　处：《中国动物传染病学报》2011年第1期22-26,共5页Chinese Journal of Animal Infectious Diseases

基　　金：农业公益性行业科研专项课题(201003012);中央高校基本科研业务费专项资金资助

摘　　要：本文对2010年在成年蛋鸭中流行的以产蛋下降为特征的未知疫病病原进行了初步鉴定。病原能在鸭胚、鸡胚和细胞上复制增殖,对鸭胚、鸡胚的致死率达100%。鸭胚病毒分离物不具有血凝性,在透射电镜下可观察到直径为50~100 nm、有囊膜带突起的病毒粒子。病毒对酸敏感、能耐受pH9的碱性环境,50℃1 h可使病毒失去感染能力。SPF鸡人工感染试验结果显示,感染鸡生长缓慢、致死亡率低、能回收病毒。说明引起鸭产蛋量下降的疫病病原是病毒性的,并导致鸡感染发病,我们将此病暂称为鸭传染性产蛋减少症。In this study,we preliminarily identified a duck unknown virus infection which originally epidemic in Zhejiang and Jiangsu provinces and mainly caused egg decreasing in adult layer ducks in 2010.The pathogen of this unknown infection could grow in duck and chicken embryos,and resulted in 100% mortality in infected embryos.Electron microscopy showed that the virion was round-like,50-100 nm in diameter,covered with an envelope.The virus isolate has no haemagglutiation activity,and is sensitive to ether and chloroform,resistant to pH9.Moreover,the virus isolate lost its infectivity at 50 ℃ for 1 h.The experimental infection of SPF chickens showed that the infected chickens grow slow,low mortality,and the virus could be re-isolated from infected birds.These findings indicate that this unknown infection is a viral in adult layer ducks,and the virus isolate could also infect chicken.Herein the infection is temporarily called duck infectious egg failings（DIEF）.

关 键 词：蛋鸭 产蛋下降 病毒分离鉴定 

分 类 号：S858.322.659.6[农业科学—临床兽医学]