Isparta Directorate of Provincial Agriculture and Forestry, Republic of Türkiye Ministry of Agriculture and Forestry, Isparta, Türkiye.
Department of Animal Science, Faculty of Agriculture, Isparta University of Applied Sciences, Isparta, Türkiye.
Trop Anim Health Prod. 2023 Nov 27;55(6):421. doi: 10.1007/s11250-023-03837-4.
The purpose of this study was to investigate the effects of the farm size on the carbon footprint of dairy cattle farms in Isparta province in Türkiye. For this purpose, face-to-face interviews were conducted with 159 farms which represent 1866 dairy cattle farms in Isparta province. The number of animals on the farm was converted into animal unit (AU) and the farms were divided into three groups. Accordingly, farms were classified as small, medium, and large farms. The carbon footprint produced per AU in the farm was the sum of feed, enteric fermentation, CH from manure, CO from manure, NO from manure, and anthropogenic emissions. The milk produced in the farms was standardized according to 4% fat and 3.3% protein (FPCM) and the ratio of meat to milk was found by dividing the total live weight gain produced except for cows by FPCM. Accordingly, 65% of the greenhouse gas emissions of dairy farms were allocated to milk and 35% to meat. Of the total emissions, enteric fermentation and emission on feed contributed the highest proportion. Results showed that when using the IPCC (2021) global warming potential (GWP) values, the carbon footprint for 1 kg of FPCM milk was 1.26 kg CO-eq on average, whereas the carbon footprint for 1 kg of meat was 11.78 kg CO-eq on average. Results showed that as farm size increased carbon footprint for a kilogram of FPCM and meat decreased and this showed the effectiveness of farm size on decreasing carbon footprint per unit of product.
本研究旨在探讨农场规模对土耳其伊斯帕塔省奶牛场碳足迹的影响。为此，对伊斯帕塔省 159 个农场进行了面对面访谈，这些农场代表了该省 1866 个奶牛场。农场中的动物数量被转换为动物单位（AU），并将农场分为三组。相应地，农场被分为小型、中型和大型农场。农场每 AU 产生的碳足迹是饲料、瘤胃发酵、粪肥中的 CH、粪肥中的 CO、粪肥中的 NO 和人为排放的总和。农场生产的牛奶根据 4%脂肪和 3.3%蛋白质（FPCM）进行标准化，通过将除奶牛外的总活体重增加除以 FPCM，得出肉与奶的比例。因此，奶牛场温室气体排放的 65%分配给牛奶，35%分配给肉类。在总排放量中，瘤胃发酵和饲料排放对温室气体排放的贡献最大。结果表明，使用 IPCC（2021）全球升温潜能值（GWP）时，每公斤 FPCM 牛奶的碳足迹平均为 1.26 公斤 CO-eq，而每公斤肉的碳足迹平均为 11.78 公斤 CO-eq。结果表明，随着农场规模的增加，每公斤 FPCM 和肉的碳足迹减少，这表明农场规模对降低单位产品碳足迹的有效性。
