*Junpei Kawakami¹, Yusaku Goto¹, Toshimi Baba¹, Satoshi Yamaguchi², Satoshi Nakagawa², Hayato Abe², Yuka Nakahori², Takayoshi Kawahara¹ (1. Holstein Cattle Association of Japan, Hokkaido Branch, 2. Hokkaido Dairy Milk Recording and Testing Association)

*Yusaku Gotoh¹, Toshimi Baba¹, Junpei Kawakami¹, Satoshi Yamaguchi², Hayato Abe², Yuka Nakahori², Takayoshi Kawahara¹ (1. HCAJ, 2. HMRT)

*Takayoshi Kawahara¹, Yusaku Gotoh¹, Toshimi Baba¹, Junpei Kawakami¹, Yuka Nakahori², Hayato Abe², Satoshi Yamaguchi² (1. Holstein Cattle Association of Japan, Hokkaido Branch, 2. Hokkaido Dairy Milk Recording and Testing Association)

*HAYASHI YU¹, Yoshimi Fujisawa², Ataru Fujimoto¹, Tadatoshi Satow¹, Yuri Nagasaka¹, Satoka Ishida¹, Koichi Hagiya¹ (1. Obihiro University of Agriculture and Veterinary Medicine, 2. JHBS)

*Akiko Nishiura¹, Osamu Sasaki¹, Mitsuo Aihara², Yuriko Saito¹, Hisato Takeda¹ (1. Institute of Livestock and Grassland Science, National Agriculture and Food Research Organization, 2. Livestock Improvement Association of Japan)

*Takeshi Yamazaki¹, Hisato Takeda², Osamu Sasaki² (1. Hokkaido Agricultural Research Center, NARO, 2. Institute of Livestock and Grassland Science, NARO)

*Yutaka Masuda¹, Satoshi Yamaguchi² (1. Rakuno Gakuen Univ., 2. Hokkaido Dairy Milk Recording & Testing Association)

*Takefumi Osawa¹, Yutaka Masuda², Junich Saburi¹ (1. National Livestock Breeding Center, 2. Rakuno Gakuen Univ.)

*KEITA HIRUMACHI¹, JUNICHI SABURI¹, TAKEFUMI OSAWA¹, TARO OKA² (1. National Livestock Breeding Center, 2. The Holstein Cattle Association of Japan)

*Toshimi Baba¹, Yusaku Goto¹, Jumpei Kawakami¹, Yutaka Masuda², Takayoshi Kawahara¹ (1. Holstein Cattle Association of Japan, Hokkaido-branch, 2. Rakuno Univ.)

*Sana Abe¹, Sachi Konno², Mario Sekiya², Keigo Kuchida³ (1. Obihiro Univ., 2. Akita Prefectural Livestock Experiment Station, 3. Obihiro Univ.)

*Ayu Miyata¹, Hisashi Komine², Takaaki Saito³, Yuumi Mafune³, Meguru Hara³, Yuuji Ishikawa⁴, Keigo Kuchida¹ (1. Obihiro Univ., 2. MIJ labo, 3. Livestock Research Centre, Fukushima Agricultural Technology Centre, 4. Livestock Industry Division, Fukushima Prefectural Government)

*Katsuya Suzuki¹, Itaru Yamanaka², Daisuke Kishi³, Keigo Kuchida¹, Koichi Hagiya¹ (1. Obihiro University of Agriculture and Veterinary Medicine, 2. Tokachi Federation of Agricultural Cooperatives., 3. Hokkaido Dairy and Livestock Association)

*Keigo Kuchida¹, Hisashi Komine², Yoichi Sakaguchi², Atsushi Kano², Aaron van den Heuvel³, Matt McDonagh³ (1. Obihiro Univ., 2. MIJ labo, 3. Australian Wagyu Association)

*Masataka Shimabukuro¹, Atsushi Kano², Hisashi Komine², Keigo Kuchida³ (1. Obihiro Univ. , 2. MIJ labo, 3. Obihiro Univ.)

*Atsushi Zoda^1,2, Rino Kagawa¹, Yoshio Oono¹, Rui Obinata¹, Shinichiro Ogawa², Yoshinobu Uemoto², Masahiro Sato² (1. Zen-noh Embryo Transfer Center, 2. Tohoku University)

*Hidemi Oyama¹, Mei Yamanaka², Madoka Kimura³, Yuumi Maruyama⁴, Mio Watanabe⁵, Takefumi Osawa¹, Keiichi Inoue¹ (1. National livestock breeding center, 2. National livestock breeding center Tokachi station, 3. Ministry of Agriculture, Forestry and Fisheries, 4. National livestock breeding center Ouu station, 5. National livestock breeding center Miyazaki station)

*Keiichi Inoue¹, Motohide Nishio², Yoshinobu Inoue³, Masayuki Takeda¹, Katsuo Uchiyama¹, Hiroyuki Hirooka⁴ (1. National Livestock Breeding Center, 2. NARO Institute of Livestock and Grassland Science, 3. Tottori Prefectural Livestock Research Center, 4. Kyoto Univ.)

*Hiroyuki Hirooka¹, keiichi Ionue², Motohide Nishio³, Masayuki Takeda², Yoshinobu Inoue⁴ (1. Kyoto Univ., 2. National Livestock breeding Center, 3. NARO Institute of Livestock and Grassland Science, 4. Tottori Prefectural Livestock Research Center )

*Taira Hida¹, Shinji Sasazaki¹, Hideyuki Mannen¹, Kenji Oyama¹, Fuki Kawaguchi¹ (1. Kobe Univ.)