Genotypic Change of Porcine Circovirus Type 2 on Japanese Pig Farms as Revealed by Restriction Fragment Length Polymorphism Analysis
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概要
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Porcine circovirus type 2 (PCV2) has been recognized as the causal agent of postweaning multisystemic wasting syndrome and can be divided into two major genotypic groups. We developed a method of restriction fragment length polymorphism (RFLP) analysis of PCV2 open reading frame 2 for easy discrimination between the two major groups. Genotyping of PCV2 isolates from 10 Japanese commercial pig farms was performed, and the analysis revealed that both PCV2 groups and at least five RFLP types of PCV2 are prevalent in Japan. On two farms, the genotypes of the PCV2 isolates in the spring of 2007 were different from those in the autumn of 2006. One genotype may have become dominant within only six months on these farms.
著者
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TOKI Shinji
Research and Development Center, Nippon Meat Packers, Inc.
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Morimatsu Fumiki
Research And Development Center Nippon Meat Packers Inc.
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Toki Shinji
Research And Development Center Nippon Meat Packers Inc.
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TAKAHAGI Yoichi
Research and Development Center, Nippon Meat Packers, Inc.
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NISHIYAMA Yasutaka
Research and Development Center, Nippon Meat Packers, Inc.
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Murakami Hiroshi
Research And Development Center Nippon Meat Packers Inc.
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Murakami Hiroshi
Research and Development Center, Nippon Meat Packers, Inc.
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YONEKITA Taro
Research and Development Center, Nippon Meat Packers, Inc.
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