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江西PRRS流行毒株ORF7基因遗传变异分析 被引量:1

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摘要 江西某4个猪场发生以母猪繁殖障碍和仔猪呼吸道症状等为特征的传染病,怀疑为猪繁殖与呼吸综合征病毒(PRRSV)感染所致。本研究对送检病料进行RT—PCR检测为阳性后,克隆出PRRSV ORF7基因,序列分析表明4个序列之间同源性是98.7%~100%,同源性很高;与美洲型蓝耳病标准毒株VR-2332的同源性为93.3%~94.6%,与疫苗株MLV的序列同源性在93.3%~94.6%;而与欧洲株LV的同源性只有58.1%~58.6%。结果表明这4个毒株与VR-2332和MLV株亲缘关系比较密切,属于美洲型毒株。
作者 焦茂兴
出处 《云南畜牧兽医》 2008年第5期1-3,共3页
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共引文献91

同被引文献10

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