Nutrient metabolism in mammary gland and whole body of high yielding dairy cows under frequent milking

• Project/Area Number: 23580369
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Zootechnical science/Grassland science
• Research Institution: Hiroshima University
• Principal Investigator: OBITSU Taketo 広島大学, 生物圏科学研究科, 准教授 (30194632)
• Co-Investigator(Kenkyū-buntansha): SUGINO Toshihisa 広島大学, 大学院生物圏科学研究科, 助教 (90363035) ; KUROKAWA Yuzo 広島大学, 大学院生物圏科学研究科, 准教 授 (00234592)
• Project Period (FY): 2011 – 2013
• Project Status: Completed (Fiscal Year 2013)
• Budget Amount: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000); Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2012: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2011: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
• Keywords: 高泌乳牛 / 搾乳ロボット / 乳生産 / 乳腺組織 / 乳成分 / アミノ酸 / グルコース / 搾乳方法 / 乳牛 / 搾乳回数 / 乾乳期 / 栄養 / 代謝

Research Abstract

Increasing milking frequency by automatic milking system is considered to improve milk production in dairy cows. However, the enhanced milk production may increase nutrient requirements and affect nutrient metabolism in mammary gland and whole body. The aim of this study was to investigate milk production and nutrient metabolism in cows under frequent milking by automatic milking system. Increasing daily milking frequency from 2 to 4 times enhanced milk production in cows at both early and middle to late lactation periods without an increase of feed intake. The increased milk production seemed to be caused by the increase of mammary blood flows. Increasing milking frequency did not seem to affect fat mobilization from day 20 postpartum onward. Increasing feeding levels before calving did not affect milk production in postpartum cows milked 4 times daily. These results indicate that frequent milking by automatic milking system increases the efficiency of milk production.

Research Products

• [Journal Article] 泌乳中後期における搾乳回数の変更が乳生産に及ぼす影響 (2012)
  • Author(s): 小櫃剛人・佐々木理沙・杉野利久・谷口幸三
  • Journal Title: 広大FSC報告 Volume: 10 Pages: 1-8
  • NAID: 40021348672
• [Journal Article] 泌乳中後期における搾乳回数の変更が乳生産に及ぼす影響 (2012)
  • Author(s): 小櫃剛人・佐々木理沙・杉野利久・谷口幸三
  • Journal Title: 広島大学大学院生物圏科学研究科瀬戸内圏フィールド科学教育研究センター報告 Volume: 10 Pages: 1-8
  • NAID: 40021348672
• [Presentation] Effect of milking frequency on plasma profile and mammary uptake of metabolites in early lactation cows under automatic milking system (2013)
  • Author(s): Andriyani Astuti, Obitsu T, Sugino T, Taniguchi K. Kurokawa Y, Okita M, Tanaka A.
  • Organizer: 第63回関西畜産学会
  • Place of Presentation: 滋賀県立大学(彦根市)
  • Year and Date: 2013-09-05
• [Presentation] Effect of milking frequency on plasma profile and mammary uptake of metabolites in early lactation cows under automatic milking system (2013)
  • Author(s): Andriyani Astuti, Taketo Obitsu, Toshihisa Sugino, Kohzo Taniguchi, Yuzo Kurokawa, Miki Okita, Akiyoshi Tanaka
  • Organizer: 第63回 関西畜産学会
  • Place of Presentation: 滋賀県立大学
• [Presentation] 多回搾乳が泌乳初期乳牛の乳生産と乳腺組織の栄養素取り込みに及ぼす影響 (2012)
  • Author(s): 小櫃剛人,佐々木理沙,Andriyani Astuti,杉野利久,谷口幸三,沖田美紀,黒川勇三
  • Organizer: 日本畜産学会第115回大会
  • Place of Presentation: 名古屋大学(名古屋市)
  • Year and Date: 2012-03-29
• [Presentation] 多回搾乳が泌乳初期乳牛の乳生産と乳腺組織の栄養素取り込みに及ぼす影響 (2012)
  • Author(s): 小櫃剛人・佐々木理沙・Andriyani Astuti・杉野利久・谷口幸三・沖田美紀・黒川勇三小櫃剛人
  • Organizer: 日本畜産学会第１１５回大会
  • Place of Presentation: 名古屋大学
• [Remarks] ホームページ
  • URL: http://home.hiroshima-u.ac.jp/shiyou/index.shtml