Applying mixed omics-based approach for elucidation of diurnal changes in the rumen fermentation

2022 Fiscal Year Final Research Report

• Project/Area Number: 20K06363
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 42010:Animal production science-related
• Research Institution: Shinshu University
• Principal Investigator: Uyeno Yutaka 信州大学, 学術研究院農学系, 准教授 (00542911)
• Co-Investigator(Kenkyū-buntansha): 正木 達規 兵庫県立農林水産技術総合センター, 畜産技術センター, 上席・主任研究員 (20762701)
• Project Period (FY): 2020-04-01 – 2023-03-31
• Keywords: 反芻胃 / 地球温暖化ガス / 指標化合物 / 日内変動

Outline of Final Research Achievements

In this study, we conducted two feeding trials and found that multiple amino acids can be used as indicator compounds suitable for monitoring rumen fermentation. In addition, we investigated diurnal changes in the concentration of identified compounds and other index compounds in the rumen, and in the composition of rumen microbial communities. All indicators were stable throughout the day in the 2-time and 4-time feeding procedure, while feeding once a day caused excess rumen fermentation in a day, depended on the bacterial flora of each animal.

Free Research Field

動物栄養学

Academic Significance and Societal Importance of the Research Achievements

反芻動物における胃内発酵の最適化は、効率的な肉乳生産だけでなく、動物由来地球温暖化ガス低減にも有効である。その実現には、これまでとは異なる胃内発酵の評価指標が求められており、今回課題の達成により、新たな指標物質の可能性が見出された。