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乳制品印刷模型:一种决策支持模型,以帮助奶牛农和其他利益相关者提高可持续性

Tadeu E da Silva¹, Victor E Cabrera²

¹Department of Animal and Veterinary Sciences, University of Vermont-Burlington, Burlington, VT 05405.

Journal of dairy science

|August 4, 2024

概括

乳制品打印是一个新的,用户友好的模型,帮助农民估计温室气体 (GHG) 排放. 它确定了饮食和便管理等关键因素,以减少农场的二氧化碳,甲和氧化.

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:

奶农面临着减少温室气体 (GHG) 排放的压力,包括二氧化碳 (CO),甲 (CH) 和氧化 (N).
直接测量农场内的温室气体排放通常是不切实际的或昂贵的,导致依赖数学模型.
现有的模型往往不易于使用,难以获取,或过于以研究为导向,无法在实际农场应用.

研究的目的:

推出DairyPrint,这是一个用户友好的工具,旨在估计奶牛养殖业务的温室气体排放.
提供一个全面而简单的方法,整合群体动态,肥管理和料考虑.
让农民能够轻松地探索改善农场可持续性的"如果"情景.

主要方法:

使用R编程语言与Shiny框架和Golem包开发了DairyPrint模型.
集成模块用于群体动态,肥料管理和作物/料考虑.
在32个模拟场景中对模型进行了评估,其中包括不同的饮食成分,3-氧醇 (3-NOP) 补充剂,床铺类型,便管理频率和生物消化剂/固体液体分离使用.

主要成果:

在32个场景中平均温室气体排放量为0.811公斤CO2eq/公斤牛奶 (经脂肪和蛋白质校正).
最低排放场景 (0.644公斤CO2eq/kg) 结合了较低的NDF-ADF饮食水平,3-NOP,沙床,生物消化器/固体-液体分离,以及每两年一次的肥池排空.
最高排放场景 (1.082公斤CO2eq/kg) 涉及更高的NDF-ADF饮食水平,没有3-NOP,粉床,没有生物消化器/固体-液体分离,以及每年的便池排空.

结论:

乳制品印刷模型为奶牛农提供了一个实用和直观的工具,以估计和理解他们的温室气体排放.
具体的管理实践,包括食配方,料添加剂 (3-NOP),床材和便处理,显著影响温室气体排放.
该模型使农民能够做出明智的决定,以提高环境可持续性和减少碳足迹.

关键词:

决策支持系统决策支持系统温室气体的温室气体是什么建模建模模型建模模型模拟模拟是指一个模拟模拟.

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