奶制品生产中温室气体排放减缓的群体管理策略:模拟研究
L Chen1, V M Thorup1, S Østergaard1
1Department of Animal and Veterinary Sciences, AU Viborg, Aarhus University, Tjele 8830, Denmark.
Journal of dairy science
|March 4, 2026
概括
量身定制的奶牛群管理策略可以减少温室气体 (GHG) 排放并改善农场经济,而不会显著影响食用蛋白质产量. 影响因群体的生产力和初始管理实践而异.
科学领域:
- 农业科学 农业科学
- 环境科学 环境科学
- 动物科学动物科学
背景情况:
- 奶牛养殖对温室气体 (GHG) 排放有很大的贡献.
- 需要采取缓解策略,以减少每单位牛奶对环境的影响.
- 有限的数据存在于各种牛奶业务中各种畜牧管理策略的表现和权衡.
研究的目的:
- 模拟和评估不同群体管理策略对温室气体排放,农场经济和高产乳制品群体的可食用蛋白质产量的影响.
- 评估减排,经济表现和蛋白质生产之间的权衡.
- 了解群体生产率如何影响管理策略的有效性.
主要方法:
- 利用群体模拟建模,对10个丹麦传统的荷尔斯坦群体进行模拟.
- 采用了一个摇篮到农场门的部分生命周期评估.
- 模拟策略包括增加缩剂摄入量,改善生殖能力,减少健康问题和延长哺乳期.
主要成果:
- 温室气体排放量从平均0.4%的增长变为平均3.2%的减少.
- 毛利率在 -2.2%至 +5.0%之间.
- 可食用蛋白质产量普遍增加,在特定策略中略有下降.
结论:
- 量身定制的群体管理为减少温室气体排放和提高毛利率提供了一种可行的方法.
- 在减排和经济效益之间没有发现显著的权衡.
- 策略的有效性取决于群体的初始管理和生产率水平.
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