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Carbon footprint of cows’ milk: a case study of peri-urban and urban dairy farms within Mekelle milk-shed, Ethiopia
Carbon Management ( IF 3.1 ) Pub Date : 2022-02-14 , DOI: 10.1080/17583004.2022.2039301
Endale Balcha 1, 2 , Habtamu Taddele Menghistu 1, 2 , Amanuel Zenebe 1, 3 , Birhanu Hadush 2
Affiliation  

Abstract

In Ethiopia, there is an urge to enhance milk production where urban and peri-urban farms play important role. Therefore, the role of such production system in Greenhouse gas (GHG) emissions should be known. This study was conducted with the objective of estimating the carbon footprint (CF) of milk within Mekelle milkshed, Ethiopia. 50 urban and 42 peri-urban dairy farms were selected randomly and both primary and secondary data was collected. Lifecycle Assessment (LCA) approach was employed to quantify GHG emissions using cradle to- farm gate approach. The mean GHG emissions per cattle unit (000 kg CO2-e y-1) were 2.84 ± 1.23 and 3.19 ± 1.99 for peri-urban and urban farms, respectively. The share of enteric fermentation was 75.5% and 73.6% for peri-urban and urban farms, respectively. Milk contributed for 88.5% and 90.8% to the economic value of peri-urban and urban farms, respectively. Overall, the CF of milk production in urban and peri-urban farms was 2.2 kg CO2-e/kg and 3.2 kg CO2-e/kg without economic allocation, and 2.0 kg CO2-e/kg and 2.8 kg CO2-e/kg with economic allocation. In order to reduce GHG emission intensity from dairy farms it is important to adopt climate smart dairy practices.



中文翻译:

牛奶的碳足迹:埃塞俄比亚 Mekelle 奶棚内城郊和城市奶牛场的案例研究

摘要

在埃塞俄比亚,城市和城郊农场发挥着重要作用,迫切需要提高牛奶产量。因此,应该了解此类生产系统在温室气体 (GHG) 排放中的作用。进行这项研究的目的是估计埃塞俄比亚 Mekelle 奶棚内牛奶的碳足迹 (CF)。随机选择50个城市奶牛场和42个城郊奶牛场,收集一手和二手数据。采用生命周期评估 (LCA) 方法来量化温室气体排放,使用从摇篮到农场的方法。每单位牛的平均温室气体排放量(000 kg CO 2-e y-1) 分别为城郊和城市农场的 2.84 ± 1.23 和 3.19 ± 1.99。城郊和城市农场的肠道发酵份额分别为 75.5% 和 73.6%。牛奶对城郊和城市农场的经济价值分别贡献了 88.5% 和 90.8%。总体而言,城市和城郊农场的牛奶生产 CF 为 2.2 kg CO 2 -e/kg 和 3.2 kg CO 2 -e/kg 没有经济分配,以及 2.0 kg CO 2 -e/kg 和 2.8 kg CO 2 -e/kg 经济分配。为了降低奶牛场的温室气体排放强度,采用气候智能型乳制品实践非常重要。

更新日期:2022-02-14
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