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首页> 外文期刊>International Dairy Journal >Regional analysis of greenhouse gas emissions from USA dairy farms: a cradle to farm-gate assessment of the American dairy industry circa 2008. (Special Issue: Carbon and water footprint of U.S. milk, from farm to table.)
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Regional analysis of greenhouse gas emissions from USA dairy farms: a cradle to farm-gate assessment of the American dairy industry circa 2008. (Special Issue: Carbon and water footprint of U.S. milk, from farm to table.)

机译：美国奶牛场温室气体排放量的区域分析：从大约摇篮到农场门对美国奶业的评估，大约在2008年。（专刊：从农场到餐桌的美国牛奶的碳和水足迹）。

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Greenhouse gas (GHG) emissions were evaluated from crop production through the on-farm portion of the milk supply chain for five production regions in the USA derived from publicly available data and from 536 surveys of farm operations collected from dairy operations nationwide. The production weighted national average footprint at the farm gate was 1.23 kg carbon dioxide equivalent (CO2e) per kg of fat and protein corrected milk (fat, 4%; protein 3.3%). Regional differences in GHG emissions per kg milk produced can be primarily traced to differences in production and management practices. Feed-to-milk conversion efficiency is shown to be the single most important explanatory variable, followed by choice of manure management technology. While there is no one-size-fits-all solution, GHG emissions reduction opportunities exist across the spectrum of dairy management options. However, as with all decisions, it is important to weigh potential trade-offs with other environmental and economic impacts.
机译：温室气体（GHG）排放是根据美国五个公开地区的牛奶生产链中农场生产部分的农作物产量进行评估的，该数据来自可公开获得的数据以及从全国范围内的乳业运营中收集的536次农场运营调查。农场门口的生产加权全国平均足迹为每千克经脂肪和蛋白质校正的牛奶（脂肪，4％;蛋白质3.3％），二氧化碳当量为1.23千克二氧化碳当量（CO 2 e）。每公斤牛奶生产所产生的温室气体排放量的区域差异主要可归因于生产和管理实践的差异。饲料到牛奶的转化效率是唯一最重要的解释变量，其次是粪便管理技术的选择。尽管没有一种千篇一律的解决方案，但各种乳业管理方案都存在减少温室气体排放的机会。但是，与所有决策一样，重要的是权衡潜在的权衡与其他环境和经济影响。

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