← 論文一覧に戻る

Profitability, greenhouse gas emissions and food-feed efficiency comparison of dairy-beef steers of divergent beef genetic merit in pasture-based production systems

放牧ベース生産システムにおける牛肉遺伝能力の異なる乳用雄牛の収益性、温室効果ガス排出量、飼料効率の比較 (AI 翻訳)

Jamie O’Driscoll, P. Crosson, D. Purfield, N. McHugh, N. Byrne

Journal of Agricultural Sciences📚 査読済 / ジャーナル2026-02-10#エネルギー転換Origin: EU経営インパクト: コスト削減対象セクター: agriculture
DOI: 10.1017/s0021859626100562
原典: https://doi.org/10.1017/s0021859626100562

🤖 gxceed AI 要約

日本語

乳牛群由来の牛肉生産における遺伝的能力の異なる3タイプの去勢牛を、3つの飼養管理下で比較した。高牛肉遺伝能力のアンガス種が最も収益性が高く、温室効果ガス排出量も低かった。濃厚飼料の利用は排出原単位を下げるが、総排出量は放牧主体の方が低かった。

English

This study compares three dairy-beef genotypes under three pasture-based feeding systems, finding that high beef-merit Angus steers are most profitable and have lower GHG emissions per animal. Concentrate supplementation reduces emissions per kg of beef but increases total emissions per hectare compared to grass-only systems.

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

日本では牛肉生産の効率化とGHG削減が課題であり、遺伝的能力の向上と放牧管理の組み合わせは、国産牛肉の持続可能性向上に示唆を与える。

In the global GX context

This study provides empirical evidence on how genetic selection and feeding strategies can reduce GHG emissions in beef production, relevant to global efforts to decarbonize agriculture and meet climate targets.

👥 読者別の含意

🔬研究者:Provides quantitative data on trade-offs between profitability and emissions in dairy-beef systems.

🏢実務担当者:Highlights the benefits of selecting high beef-merit sires for both economic and environmental performance.

🏛政策担当者:Informs agricultural policies aimed at reducing livestock emissions while maintaining farm profitability.

📄 Abstract（原文）

Abstract Beef produced originating from the dairy herd forms an integral part of beef supply chains globally. The objective of this study was to quantify the economic and environmental performance of three dairy-beef genotypes differing in beef genetic merit and managed under three contrasting pasture-based feeding treatments, using a farm-level systems model and data from an animal systems experiment. The three steer genotypes modelled were: 1) high beef-merit Angus sires (HA); 2) low beef-merit Angus sires (LA); and 3) Holstein-Friesian (HF) sires. Each genotype was evaluated across one of three feed treatments: 1) control (CTL), grass-only during both grazing seasons; 2) low concentrate (LC), supplemented with concentrate during the first grazing season, pasture only during the second grazing season; and 3) high concentrate (HC) supplemented with concentrate during the first and second grazing season; amounting to nine scenarios. High Angus steers were most profitable (€424/animal, €1362/ha), followed by LA (€337, €1126) and HF (€188, €659). There were no interactions between genotype and feed treatment, with the CTL treatment having highest profit per head due to lower concentrate input costs. High Angus scenarios had the lowest greenhouse gas emissions between genotypes, and concentrate use reduced emissions per kg of beef, but CTL had the lowest total emissions per ha and per farm due to greater forage use. In conclusion, this study demonstrates the financial and environmental benefits of high beef genetic merit sires in dairy herd for dairy-beef systems and producers.

🔗 Provenance — このレコードを発見したソース

🔔 こうした論文の新着を逃したくない方は キーワードアラート に登録（無料・3キーワードまで）。

gxceed は公開メタデータに基づく研究支援データセットです。要約・翻訳・解説は AI 支援で生成されています。 最終的な解釈・検証は利用者が原典資料に基づいて行うことを前提とします。