<i>Theileria</i>-free grazing of dairy heifers on grassland in Kyushu, Japan where <i>T. orientalis</i> was epidemic before a 7-year vacancy
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- FUKUSHIMA Yuki
- Course of Animal and Grassland Sciences, Graduate School of Agriculture, University of Miyazaki, Miyazaki, Japan
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- MINAMINO Tomoya
- Honkawa Ranch, Oita, Japan
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- HONKAWA Kazuyuki
- Honkawa Ranch, Oita, Japan
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- TANIGUCHI Takako
- Center for Animal Disease Control, University of Miyazaki, Miyazaki, Japan
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- HORII Yoichiro
- Honkawa Ranch, Oita, Japan Center for Animal Disease Control, University of Miyazaki, Miyazaki, Japan
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- SASAKI Yosuke
- Center for Animal Disease Control, University of Miyazaki, Miyazaki, Japan Department of Animal and Grassland Sciences, Faculty of Agriculture, University of Miyazaki, Miyazaki, Japan
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抄録
<p>This study aimed to produce a Theileria-free grazing system for Holstein heifers reared on a dairy farm in the Hita area, Kyushu, Japan. In the grazing area, spreading of T. orientalis infection was confirmed in 2009. To eradicate the T. orientalis infection, four measures were conducted: 1) 7-year deferred grazing; 2) grazing only T. orientalis-uninfected heifers; 3) anemia check by red blood cell parameters at least once per month; and 4) protecting heifers from blood-sucking T. orientalis-infected ticks. Grazing was restarted in 2017 in the same area and continued to 2021. During last 2 years of pasturing (2020–2021) all of the 129 heifers were confirmed to be T. orientalis-free. In summary, it is possible to establish a T. orientalis-free grazing system by conducting appropriate measures.</p>
収録刊行物
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- Ｔｈｅ Ｊｏｕｒｎａｌ ｏｆ Ｖｅｔｅｒｉｎａｒｙ Ｍｅｄｉｃａｌ Ｓｃｉｅｎｃｅ
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Ｔｈｅ Ｊｏｕｒｎａｌ ｏｆ Ｖｅｔｅｒｉｎａｒｙ Ｍｅｄｉｃａｌ Ｓｃｉｅｎｃｅ 84 (5), 628-633, 2022
公益社団法人 日本獣医学会