家畜由来メタン排出の現状と緩和戦略、および地球温暖化における役割：レビュー
Current Status and Mitigation Strategies of Livestock-Derived Methane Emissions and Their Role in Global Warming: A Review (原題)
Vaddeswarapu Keerthi, Venus Das, Mekapothula Himabindu, Vanlalhmangaisanga, Abhijeet Champati
🤖 gxceed AI 要約
日本語
本レビューは、反芻動物の腸内発酵と家畜ふん尿管理に由来するメタンが地球温暖化に与える影響を、特にインドの排出状況に焦点を当てて整理した。ルーメン内のメタン生成菌による嫌気発酵の生物学的機序を概説し、飼料品質改善、タンニン・サポニン、プロバイオティクス、脂質添加、メタン生成阻害剤、硝酸塩、海藻、遺伝的選抜、ふん尿管理改善などの緩和策を評価している。排出削減と家畜生産性・飼料利用効率を両立する統合的アプローチの必要性を結論づけている。
English
This review synthesizes livestock-derived methane emissions and their role in global warming, with a focus on India's emission status. It outlines rumen methanogenesis biology and evaluates mitigation options including forage quality, tannins, probiotics, lipids, inhibitors, nitrate, macroalgae, genetic selection, and manure management. It concludes that effective mitigation requires integrating emission reduction with animal productivity and feed efficiency.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本では畜産由来メタンはScope 1排出として農林水産分野の削減計画やJ-クレジット（家畜排せつ物管理）に関わるが、本稿は開示制度よりも削減技術の整理に重心があり、SSBJ・有報対応への直接的示唆は限定的。ただし農業由来排出の削減オプションを俯瞰する基礎資料として参考になる。
In the global GX context
Globally, livestock methane sits within agricultural Scope 1 and supply-chain (Scope 3) accounting, and is increasingly relevant to SBTi FLAG targets and CSRD/ISSB agricultural disclosures. This review adds a Global South (India) empirical perspective on mitigation options, useful for framing agricultural transition pathways beyond OECD-centric literature.
👥 読者別の含意
🔬研究者:畜産メタンの生物学的機序と緩和技術の比較整理として、農業排出研究の基礎文献として有用。
🏢実務担当者:食品・農業関連企業がScope 1/3の農業排出削減オプションを検討する際の技術的参照になる。
🏛政策担当者:農業由来メタン削減政策やJ-クレジット設計を検討する際の緩和策メニューとして参考になる。
📄 Abstract（原文）
Livestock production contributes to anthropogenic methane emissions primarily through enteric fermentation and manure management, creating an important challenge for environmentally sustainable animal production. This review summarises the role of livestock-derived methane in global warming, with particular emphasis on the status of emissions in India and the major biological processes responsible for methane formation. Estimates based on livestock census data and IPCC-based methodology indicate that enteric fermentation represents the dominant source of livestock methane in India, while manure management makes a smaller contribution. Methane production in ruminants is closely associated with anaerobic microbial fermentation in the rumen, where hydrogen and carbon dioxide are utilised by methanogenic microorganisms. The review evaluates major mitigation approaches, including improved forage quality, tannins and saponins, probiotic supplementation, dietary lipids, methanogenesis inhibitors, nitrate supplementation, macroalgae, genetic selection, and improved manure management. These strategies differ in their mechanisms, effectiveness, and potential effects on animal nutrition and productivity. Dietary interventions may alter rumen fermentation or reduce the availability of hydrogen for methanogenesis, whereas genetic and management approaches aim to improve production efficiency and decrease emission intensity. Manure-related emissions may also be reduced through appropriate storage, treatment, composting, anaerobic digestion, and acidification. Effective methane mitigation therefore requires an integrated approach that considers emission reduction together with animal productivity, feed utilisation, and practical livestock-management conditions.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.9734/jeai/2026/v48i104533first seen 2026-10-16 04:41:37
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