Identification of high risk bacterial strains in rumen acidosis for the prevention of metabolic disorder in ruminants

• Project/Area Number: 22780238
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Zootechnical science/Grassland science
• Research Institution: Hokkaido University
• Principal Investigator: KOIKE Satoshi 北海道大学, 大学院・農学研究院, 助教 (90431353)
• Project Period (FY): 2010 – 2011
• Project Status: Completed (Fiscal Year 2011)
• Budget Amount: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000); Fiscal Year 2011: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000); Fiscal Year 2010: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
• Keywords: ルーメンアシドーシス / Streptococcus bovis

Research Abstract

The present research revealed that genotypically and physiologically heterogeneous strains of S. bovis were distributed in the rumen. The specific genotypes of S. bovis strains are predominant when the animal is fed a high-grain diet. In addition, the balance of lactate producer/utilizer was altered by high-grain diet. This bacterial community shift might result in lactate accumulation and lower pH.

Research Products

• [Journal Article] Phylogenetic diversity and dietary association of rumen Treponema revealed using group-specific 16S rRNA gene-based analysis (2011)
  • Author(s): Bekele AZ., Koike, S., Kobayashi, Y.
  • Journal Title: FEMS Microbiology Letters Volume: 316 Pages: 51-60
  • Peer Reviewed
• [Presentation] 濃厚飼料多給とルーメン細菌Streptococcus bovis菌株多様性の関連 (2012)
  • Author(s): 加藤泰基,小池聡,小林泰男
  • Organizer: 日本畜産学会第115回大会
  • Place of Presentation: 名古屋大学(名古屋)
  • Year and Date: 2012-03-29
• [Presentation] 濃厚飼料多給とルーメン細菌Streptococcus bovis菌株多様性の関連 (2012)
  • Author(s): 加藤泰基, ら
  • Organizer: 日本畜産学会第115回大会
  • Place of Presentation: 名古屋大学東山キャンパス(名古屋)
  • Year and Date: 2012-03-29
• [Presentation] Genotyping of Streptococcus bovis isolated from the rumen of wild deer and doesticated animals (2011)
  • Author(s): Koike, S., Kato, H., Sakaki, M., Iisaka, S., Sawabe, Y., Kobayashi, Y.
  • Organizer: 2011 Congress on Gastrointestinal Function
  • Place of Presentation: シカゴ(アメリカ)
  • Year and Date: 2011-04-19
• [Presentation] Genotyping of Streptococcus bovis isolated from the rumen of wild deer and doesticated animals (2011)
  • Author(s): 小池聡, ら
  • Organizer: 2011 Congress on Gastrointestinal Function
  • Place of Presentation: Gleacher Center (USA)
  • Year and Date: 2011-04-19
• [Presentation] rep-PCR法によるStreptococcus bovis菌株の遺伝子型解析 (2010)
  • Author(s): 加藤泰基,榊真由子,飯坂詩史,沢辺佳彦,小池聡,小林泰男
  • Organizer: 第41回ルーメン研究会
  • Place of Presentation: 筑波大学法科大学院(秋葉原)
  • Year and Date: 2010-09-17
• [Presentation] Genetic and phenotypic diversity of streptococci from the rumen of wild deer and domesticated sheep (2010)
  • Author(s): Sakaki M, Koike, S., Kobayashi, Y.
  • Organizer: Gut Microbiology
  • Place of Presentation: アバディーン(イギリス)
  • Year and Date: 2010-06-24
• [Presentation] Genetic and phenotypic diversity of streptococci from the rumen of wild deer and domesticated sheep (2010)
  • Author(s): Sakaki, M, ら
  • Organizer: Gut Microbiology
  • Place of Presentation: Aberdeen (UK)
  • Year and Date: 2010-06-24