^○Nakahori Yuka¹, Yamaguchi Satoshi², Abe Hayato², Nakagawa Satoshi², Yamazaki Takeshi³, Baba Toshimi⁴, Hagiya Koich¹ (1.Obihiro Univ. of Agriculture and Veterinary Medicine, 2.Hokkaido Dairy Milk Recording and Testing Association, 3.Hokkaido Agricultural Research Center, NARO, 4.4Holstein Cattle Association of Japan, Hokkaido Branch)

^○Abe Hayato¹, Hagiya Koichi², Yamaguchi Satoshi¹, Nakagawa Satoshi¹, Gotoh Yusaku³, Baba Toshimi³, Kawakami Junpei³, Kawahara Takayoshi³ (1.HMRT, 2.OUAV, 3.HCAJ)

^○Baba Toshimi¹, Gotoh Yusaku¹, Kawakami Jumpei¹, Oka Taro², Abe Hayato³, Nakagawa Satoshi³, Yamaguchi Satoshi³, Kawahara Takayoshi¹ (1.Holstein Cattle Association of Japan, Hokkaido-branch, 2.Holstein Cattle Association of Japan, 3.Hokkaido Dairy Milk Recording & Testing Association)