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Identification of regulatory factors on carcass characteristics and meat quality of beef cattle and elucidation of their regulatory mechanisms.

Research Project

Project/Area Number 18K05954
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 42010:Animal production science-related
Research InstitutionNippon Veterinary and Life Science University

Principal Investigator

SHIBATA Masahiro  日本獣医生命科学大学, 応用生命科学部, 教授 (60370631)

Project Period (FY) 2018-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywords肉用牛 / 放牧と飼料イネ / 遺伝子発現 / 枝肉成績と肉質 / ビタミン / 肥育・枝肉成績 / 肉質 / 血液 / 肉用牛肥育 / 生産形質 / 飼養環境
Outline of Final Research Achievements

In this study, we searched and identified factors that affect fattening and carcass characteristics in beef cattle, and analyze their accumulation and expression. We investigated the effects of feeding a large amount of grass hay to steers in the early stage of fattening period and feeding of rice whole crop silage (WCS) after grazing on growth performance, meat and carcass characteristics, and expression of genes involved in skeletal muscle growth of Japanese Black cattle. It was suggested that the Myostatin expression was associated with weight gain and daily gain (DG) in a large amount of grass hay fed steer. Expression of Myostatin and Atrogin-1 resulted in suppression of skeletal muscle growth, suggesting a decrease in DG in grazing steer. Vitamin content in blood and skeletal muscle showed a correlation with water-holding capacity and carcass characteristics, suggesting that they are indicators of these.

Academic Significance and Societal Importance of the Research Achievements

昨今の飼料価格の高騰や持続可能な肉牛生産から、これまで行われてきた穀物多給肥育からこれに代わる肥育技術の開発が急務となっている。一方で、肥育技術の開発には膨大な期間を要するため、容易ではない。本研究で得られた成果を活用することで、肥育途中あるいは屠畜直後に肥育方法を検証することが可能となり、肥育技術の開発の加速化につながり、これは社会的にも意義のあることと考える。また、本来は実験動物で行われるこのような試みにおいて、産業動物を対象とすることで、得られた結果を直接的に現場に応用できる点で独創性があると共に、ここで得られた知見は学術的にも意義のあるものと考える。

Report

(5 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (2 results)

All 2019 2018

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 2 results)

  • [Journal Article] Comprehensive evaluation of growth performance and meat characteristics of a fattening system combining grazing with feeding rice whole‐crop silage in Japanese Black steers2019

    • Author(s)
      Shibata Masahiro、Hikino Yasuko、Imanari Mai、Matsumoto Kazunori
    • Journal Title

      Animal Science Journal

      Volume: 90 Issue: 4 Pages: 504-512

    • DOI

      10.1111/asj.13176

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Influence of feeding a grass hay diet during the early stage of the fattening period on growth performance, carcass characteristics, and meat production in Japanese Black steers2018

    • Author(s)
      Shibata Masahiro、Hikino Yasuko、Matsumoto Kazunori
    • Journal Title

      Animal Science Journal

      Volume: 90 Issue: 2 Pages: 196-204

    • DOI

      10.1111/asj.13139

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access

URL: 

Published: 2018-04-23   Modified: 2023-01-30  

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