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基于牧场的牛奶生产低排放系统的生产率

Owen Cashman¹, Imelda Casey², Friederike Fenger³

¹Animal and Grassland Research and Innovation Centre, Teagasc Moorepark, Fermoy, Co. Cork, Ireland; Department of land Sciences, South East Technological University, Waterford, Ireland.

Journal of dairy science

|February 22, 2026

概括

减少人工肥料 (AFN) 和通过乳牧场的三叶草增强生物固定 (BFN),维持了牛奶和草本的生产. 这一战略降低了排放量和农场对肥料的依赖.

科学领域:

农业科学农业科学
土壤科学土壤科学
牛奶养殖牛奶养殖牛奶养殖

背景情况:

尽量减少人工肥料 (AFN) 对于减少奶牛场排放和成本至关重要.
通过三叶草优化生物固定 (BFN) 提高了牧场的生产力和可持续性.
乳制品农场系统需要有效管理的输入和输出.

研究的目的:

评估三叶草-BFN-草地系统的牧场和牛奶生产的生产率.
量化生物固定 (BFN) 和其对生产力的贡献.
根据不同的管理策略,评估牧场的营养价值,生长和料预算.

主要方法:

进行了系统规模的实验,使用了三种不同的管理策略 (INT,BPN,BPO) 用于奶牛场.
监测人工肥料 (AFN) 输入量,三叶草含量和泥应用方法.
收集关于草干物质 (DM) 生产,牛奶产量,BFN,春季生长,生长季节长度和料消费的数据.

主要成果:

系统之间没有每公或每头牛的草地DM或牛奶产量显著差异.
年度BFN从60到252公斤ha-1不等,与AFN输入和三叶草含量相反相关.
春季生长,放牧季度的长度或每头母牛的料摄入量没有差异;草产量的变化率没有增加.

结论:

优化三叶草-BFN-草地与最小的AFN可以维持奶牛场的生产力.
这种方法为降低排放和适应使用限制提供了一种具有成本效益的战略.
可持续的管理是牧场乳制品农业未来的关键.

关键词:

一个小三叶草.乳制品乳制品是一种乳制品.牛奶牛奶牛奶牛奶这种气是气.牧场牧场牧场牧场牧场

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Production Efficiency

Production Efficiency

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Primary Production

Primary Production

The total amount of energy acquired by primary producers in an ecosystem is called gross primary production (GPP). However, of this energy, producers use some for metabolic processes, and some is lost as heat, decreasing the amount of energy available to the next trophic level. The remaining usable amount of energy is called the net primary productivity (NPP). In terrestrial ecosystems, NPP is driven by climate, while light penetration and nutrient availability drive NPP in aquatic ecosystems.

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Trophic Efficiency

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