Toward Low-Carbon Livestock: The Central Role of Manure and Crop Management in Feed Emissions
低炭素畜産に向けて：飼料排出における肥料と作物管理の中心的役割 (AI 翻訳)
Luke Soko, Daniel Andersen, Cain Bynum
🤖 gxceed AI 要約
日本語
本研究は、アイオワ州の99郡におけるトウモロコシ、大豆、および豚飼料のカーボン強度を評価し、糞尿管理、不耕起栽培、カバークロップにより飼料のカーボン強度が33%削減され、炭素クレジットで1頭あたり0.93ドル相当になることを示した。最大の排出源は圃場のN2Oであり、窒素管理の重要性を強調している。
English
This study assesses carbon intensity of corn, soybeans, and swine feed across 99 Iowa counties, showing that manure management, no-tillage, and cover cropping can reduce feed carbon intensity by 33%, translating to $0.93 per pig in carbon credits. It identifies field N2O emissions as the largest source, emphasizing nitrogen management.
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
日本では畜産部門のGHG削減が急務であり、輸入飼料への依存度が高いため、飼料のカーボンフットプリント低減は重要課題。本論文の糞尿管理や不耕起栽培の実証データは、日本の畜産・農業分野におけるGX推進の参考となる。
In the global GX context
While based on Iowa, the study's findings on manure management and reduced tillage for lowering feed carbon intensity are relevant to global livestock supply chains. The quantification of carbon credit value offers a practical incentive for adoption, contributing to Scope 3 emission reduction strategies in the food sector.
👥 読者別の含意
🔬研究者:Provides empirical evidence on emission reduction potential of specific agricultural practices in feed production, useful for LCA and carbon accounting models.
🏢実務担当者:Offers clear numbers on cost savings from carbon credits and practices that reduce feed carbon intensity, applicable to livestock operations and feed suppliers.
🏛政策担当者:Highlights the role of manure management and conservation tillage in agricultural GHG mitigation, relevant for designing incentive programs and carbon credit schemes.
📄 Abstract（原文）
Feed production is one of the largest contributors to livestock carbon intensity scores. Therefore, reducing the carbon intensity of feed is an effective approach to reduce the carbon intensity of livestock. This study assesses the carbon intensity of corn, soybeans, corn dried distiller grains with solubles, and soybean meal produced from all ninety-nine Iowa counties and evaluates trends to imply practical methods of CO 2 e reduction in crop and feed production. This study quantifies swine feed carbon intensity reduction caused by effective manure management, alternative crop management, (no-tillage and cover cropping) and diet selection. Greater yields and greater percentages of corn land area using manure nitrogen were associated with reduced carbon intensity scores for crops and feed. Compared to an average farm, a farm practicing no-tillage, cover cropping, and manure application can produce feed with a 33% lower carbon intensity, potentially translating to $0.93 pig -1 on the voluntary carbon credit market. Diets composed of corn and soybean meal achieve carbon intensity scores 19% lower than diets composed of corn and corn dried distiller grains with solubles. The greatest sources of CO 2 e from corn production were field N 2 O emissions (57% of overall CO 2 e emissions), synthetic fertilizer production (17%), and liming (15%), all of which are related to the amount of applied nitrogen, emphasizing the importance of correctly assessing the nitrogen necessary for each farm. Manure application reduces synthetic fertilizer usage and promotes soil organic carbon, characterizing itself as a heavily influential factor in determining the carbon intensity score of crops and feed. Careful attention to effective manure application could drive down feed, meat, and milk carbon intensity scores around the world.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1016/j.clcb.2026.100225first seen 2026-06-29 05:18:27 · last seen 2026-06-29 05:18:28
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