›› 2009, Vol. 36 ›› Issue (12): 115-119.

• 疾病防治 • 上一篇    下一篇

猪繁殖与呼吸综合征病毒安徽株的分离与鉴定

朱良强1,王非1,占松鹤1,何长生1,王爱萍2,姚雪静2,王立1,刘华1,王军1,沈艳1   

  1. (1.安徽省动物疫病预防与控制中心, 合肥 230022; 2.安徽农业大学, 合肥 230001)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2009-12-20 发布日期:2009-12-20

Isolation and Identification of Porcine Reproductive and Respiratory Syndrome Virus from Anhui

ZHU Liang-qiang1, WANG Fei1, ZHAN Song-he1, HE Chang-sheng1, WANG Ai-ping2, YAO Xue-jing2, WANG Li1, LIU Hua1, WANG Jun1, SHEN Yan1   

  1. (1.Anhui Animal Center for Disease Control and Prevention, Hefei 230022, China;2.Anhui Agricultural University, Hefei 230001, China)
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-12-20 Published:2009-12-20

摘要: 从安徽地区的发病猪场的病料中,分离到3株致Marc-145细胞病变的病毒(命名为AH1、AH2、AH3),负染电镜观察结果可见直径约50 nm的有囊膜的球形病毒粒子,细胞超薄切片可见病毒粒子分散在细胞浆内,直径为40~80 nm。理化特性研究结果表明,3株分离毒均对氯仿、乙醚、甲醛、温度(56 ℃)敏感;间接免疫荧光试验结果显示,分离株与美洲型PRRS阳性血清反应,发出强特异性荧光;对分离毒株Nsp2基因序列分析发现:安徽分离毒株Nsp2基因存在两处共90个碱基缺失现象,与JXA1 PRRSV变异株亲缘性最近。初步鉴定该分离株为高致病性猪繁殖与呼吸综合征病毒。

关键词: 猪繁殖与呼吸综合征病毒; 分离; 鉴定

Abstract: Three virus strains (AH1, AH2 and AH3) with cytopathic effects were isolated from the invasive swine farms in Anhui area. The virus was sphere with envelope and diameter of 50 nm by negative stain under electron microscope. Thin section showed the virus replicated in cytoplasm with diameter of 40 - 80 nm. The physicochemical characterization showed these strains were sensitive to the treatment with chloroform, ether, formalin, and 56 ℃. The specific fluorescent were seen when the virus reacted with PRRSV antiserum. There are two gene absence place of 90 nt in Nsp2 gene through gene sequencing. Comparing with the variant JXA1 stain, the isolated virus has the most recent relationship. These results confirmed the isolated virus were high pathogenic porcine reproductive and respiratory syndrome.

Key words: porcine reproductive and respiratory syndrome virus; isolation; identification

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