^○Goto Yako, Hagiya Koichi, Kuchida Keigo (Obihiro Univ. of Agriculture and Veterinary Medicine)

^○Kajita Mayu¹, Yamaguchi Satoshi², Abe Hayato², Nakagawa Satoshi², Baba Toshimi³, Kawakami Junpei³, Terawaki Yoshinori⁴, Hagiya Koichi¹ (1.Obihiro Univ. of Agriculture and Veterinary Medicine, 2.Hokkaido Dairy Milk Recording & Testing Association., 3.Holstein Cattle Association of Japan ,Hokkaido Branch, 4.Rakuno Gakuen Univ.)

^○kato naoto¹, Hanamure Takeshi², Fujimoto ikuko², Goto Yako¹, Kuchida Keigo¹, Hagiya Koichi¹ (1.Obihiro Univ. of Agriculture and Veterinary Medicine, 2.Genetics Hokkaido)