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高致病性猪蓝耳病、圆环病毒病疫苗对猪瘟疫苗免疫效果的影响试验 被引量:5

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摘要 高致病性猪蓝耳病(PRRS)是由猪繁殖与呼吸综合征病毒变异株引起的一种急性传染病,以妊娠母猪流产、死胎、木乃伊胎、早产、产弱仔等繁殖障碍和呼吸困难、高死亡率为特征.该病传播速度快,仔猪发病率可达100%,死亡率可达35%以上,母猪流产可达35%,中大猪感染率、死亡率较高.PRRSV主要在粘膜、肺局部巨噬细胞(PAM)和单核细胞中复制,由于PRRSV复制期间PAM破坏造成的免疫抑制,可能是PRRS流行猪场呼吸道疾病增加、生产性能降低和免疫失败的主要原因.
出处 《浙江畜牧兽医》 2014年第5期21-23,共3页 Zhejiang Journal Animal Science and Veterinary Medicine
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