• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Clarifying the farm environment (compost and livestock wastewater) as a hotspot for antimicrobial resistance and proposing a control method

Research Project

Project/Area Number 19H04285
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 63040:Environmental impact assessment-related
Research InstitutionRakuno Gakuen University

Principal Investigator

Usui Masaru  酪農学園大学, 獣医学群, 准教授 (60639540)

Co-Investigator(Kenkyū-buntansha) 東 剛志  大阪医科薬科大学, 薬学部, 助教 (10634222)
高田 秀重  東京農工大学, (連合)農学研究科(研究院), 教授 (70187970)
Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2022: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2021: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2020: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2019: ¥7,410,000 (Direct Cost: ¥5,700,000、Indirect Cost: ¥1,710,000)
Keywords薬剤耐性 / 堆肥 / 畜産排水 / 薬剤耐性菌 / 薬剤耐性遺伝子 / 抗菌薬
Outline of Research at the Start

抗菌薬の使用はAMRの出現と明確に関連するとされ、使用量の多い農場はAMRのホットスポット(重要な場所)と考えられる。しかし、農場におけるAMRの評価はこれまでのところ主に家畜糞便を対象に行われており、農場からの拡散を想定した際に重要な堆肥や畜産排水の評価はほとんど行われていない。本研究では、畜種別及び処理方法別に堆肥、畜産排水について耐性菌、耐性遺伝子、細菌叢、残留抗菌薬を評価し、AMR伝播リスクの高い畜種及び処理方法を明らかにする。さらに、様々な堆肥及び畜産排水処理条件をin vitro実験によりシミュレーションし検証することで、AMR低減対策に効果的な処理法を提案することを目的とする。

Outline of Final Research Achievements

The emergence and spread of antimicrobial-resistant bacteria is an international problem. There is concern about the risk of AMR emerging in livestock and spreading to humans via manure and livestock wastewater. Therefore, we investigated the actual situation of AMR in farm environments by quantifying the amount of antimicrobial-resistant bacteria, resistant genes, and residual antimicrobials in compost and livestock wastewater, and developed a method to control AMR. As a result, it was found that the amount of antimicrobial resistant bacteria, resistant genes, and residual antimicrobials was higher in farms with high antimicrobial use. The study also elucidated that anaerobic digestion treatment and the use of additives are effective in reducing the risk of AMR in compost.

Academic Significance and Societal Importance of the Research Achievements

抗菌薬の使用量の多い農場での堆肥中に薬剤耐性菌、耐性遺伝子、残留抗菌薬量が多いことを解明した。農場での適切な抗菌薬の使用を促したり、適切な家畜由来排泄物の処理を行う際の根拠を示した意義は大きい。
また、バイオガスプラント処理や添加剤の利用など、現状の問題点を解決する具体的な方法を示した意義も大きく、今後、野外農場での検証など、社会実装に向けた研究を推進していくことが期待される。

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (15 results)

All 2022 2021 2020 2019

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (12 results) (of which Int'l Joint Research: 6 results,  Invited: 10 results)

  • [Journal Article] Current status and future perspective of antimicrobial-resistant bacteria and resistance genes in animal-breeding environments2022

    • Author(s)
      USUI Masaru、TAMURA Yutaka、ASAI Tetsuo
    • Journal Title

      Journal of Veterinary Medical Science

      Volume: 84 Issue: 9 Pages: 1292-1298

    • DOI

      10.1292/jvms.22-0253

    • ISSN
      0916-7250, 1347-7439
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Aerobic composting and anaerobic digestion decrease the copy numbers of antibiotic-resistant genes and the levels of lactose-degrading Enterobacteriaceae in dairy farms in Hokkaido, Japan2021

    • Author(s)
      Katada S, Fukuda A, Nakajima C, Suzuki Y, Azuma T, Takei A, Takada H, Okamoto E, Kato T, Tamura Y, Usui M*.
    • Journal Title

      Frontiers in Microbiology

      Volume: 12 Pages: 737420-737420

    • DOI

      10.3389/fmicb.2021.737420

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Manure Compost Is a Potential Source of Tetracycline-Resistant Escherichia coli and Tetracycline Resistance Genes in Japanese Farms.2020

    • Author(s)
      Yoshizawa N, Usui M*, Fukuda A, Asai T, Higuchi H, Okamoto E, Seki K, Takada H, Tamura Y.
    • Journal Title

      Antibiotics (Basel).

      Volume: 9 Issue: 2 Pages: 76-76

    • DOI

      10.3390/antibiotics9020076

    • NAID

      120007193497

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 動物由来薬剤耐性菌の現状と今後の展望2022

    • Author(s)
      臼井優
    • Organizer
      第1回ワンヘルスネットワークセミナー
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Potential Transmission of antimicrobial-resistant bacteria derived from livestock via vegetables in Japan2022

    • Author(s)
      Masaru USUI
    • Organizer
      2nd ICAVESS (The second International Conference of Advance Veterinary Science for Sustainable Development)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Current situation and future prospect of antibiotic-resistant bacteria derived from animals2022

    • Author(s)
      Masaru USUI
    • Organizer
      第21回アジア獣医師会連合大会
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 焼成ホタテ貝殻粉末と石灰窒素による堆肥中の薬剤耐性菌制御の可能性2021

    • Author(s)
      江浪 誠俊、福田 昭、中島 千絵、鈴木 定彦、臼井 優
    • Organizer
      第164回日本獣医学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 畜産排水と薬剤耐性菌2021

    • Author(s)
      臼井優
    • Organizer
      第57回日本水処理生物学会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Current situation and future prospect of antibiotic-resistant bacteria derived from animals2021

    • Author(s)
      Masaru Usui
    • Organizer
      FFTC-TLRI symposium
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] One Healthの視点からみた動物由来耐性菌の現状2021

    • Author(s)
      臼井優
    • Organizer
      福岡県One Health 国際フォーラム
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 乳牛糞便の堆肥化及び嫌気性消化による抗菌薬量・薬剤耐性菌数・薬剤耐性遺伝子量への影響の解明2020

    • Author(s)
      片田理志、福田昭、東剛志、武井彩華、高田秀重、田村豊、臼井優
    • Organizer
      第163回日本獣医学会
    • Related Report
      2020 Annual Research Report
  • [Presentation] One Health approach to antibiotic resistance in Japan2019

    • Author(s)
      Masaru Usui
    • Organizer
      CZC and タマサート大学 joint seminar
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 獣医療における薬剤耐性問題の実態とその対策2019

    • Author(s)
      臼井優
    • Organizer
      第22回水環境学会シンポジウム
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] One Health approach to antibiotic resistance in Japan2019

    • Author(s)
      Masaru Usui
    • Organizer
      日仏セミナー[これからの微生物学]
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 獣医療や環境における薬剤耐性問題の実態とその対策2019

    • Author(s)
      臼井優
    • Organizer
      第9回家畜感染症学会
    • Related Report
      2019 Annual Research Report
    • Invited

URL: 

Published: 2019-04-18   Modified: 2024-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi