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*Yoshiharu Wada
Faculty of Agriculture, Utsunomiya University
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Tadashi Takamizo
NARO Institute of Livestock and Grassland Science
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Makoto Kobayashi
NARO Institute of Livestock and Grassland Science
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Hiroki Okada
Faculty of Agriculture, Utsunomiya University
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Saaya Iwade
Faculty of Agriculture, Utsunomiya University
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Momoe Kodaira
Faculty of Agriculture, Utsunomiya University