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Factors affecting methane production and mitigation in ruminants.

Masaki Shibata1, Fuminori Terada

  • 1National Institute of Livestock and Grassland Science, Ikenodai, Tsukuba, Ibaraki, Japan. shiba@chikusan-kankyo.jp

Animal Science Journal = Nihon Chikusan Gakkaiho
|February 19, 2010
PubMed
Summary

Methane (CH4) from livestock is a major greenhouse gas. This review identifies factors affecting CH4 production and examines mitigation technologies for ruminant livestock in Japan.

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Area of Science:

  • Agricultural Science
  • Environmental Science
  • Animal Science

Background:

  • Methane (CH4) is the second most significant greenhouse gas globally.
  • Enteric fermentation in livestock represents the largest source of CH4 emissions in Japan.
  • Ruminant CH4 production is influenced by feed intake, diet composition, feed quality, and environmental temperature.

Purpose of the Study:

  • To identify factors influencing ruminant CH4 production.
  • To review technologies for mitigating CH4 emissions from ruminants.
  • To pinpoint research gaps in CH4 emission reduction strategies.

Main Methods:

  • Literature review of factors affecting ruminant CH4 production.
  • Analysis of existing and emerging CH4 mitigation technologies.
  • Examination of the predictive equation for CH4 production adopted in Japan (Y = -17.766 + 42.793X - 0.849X(2)).

Main Results:

  • Dry matter intake (DMI) is a key factor, with a specific equation used for national inventory reporting.
  • Mitigation technologies include nutritional management, altering ruminal fermentation, CH4 inhibitors, and defaunation.
  • Improving productivity and reducing CH4 emissions requires integrated approaches.

Conclusions:

  • Economically viable methods are crucial for reducing ruminant CH4 production while enhancing livestock productivity.
  • Further research and full system analysis are needed to optimize mitigation strategies for long-term field application.
  • A combination of approaches or novel technologies may be necessary for effective CH4 reduction in ruminant livestock.