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乳牛的肠道甲排放在3种基于草的系统中:不受限制的放牧,零放牧和草

Cindy C W Kar-Klootwijk¹, Lisanne Koning¹, Gertjan Holshof¹

¹Wageningen Livestock Research, Wageningen University and Research, 6700 AH Wageningen, the Netherlands.

Journal of dairy science

|March 12, 2026

概括

无限制的放牧 (UG) 和季节早期的新鲜草,显著减少了奶牛的肠道甲 (CH4) 排放. 这凸显了高质量的料在降低畜牧业温室气体排放方面的潜力.

科学领域:

动物科学动物科学
环境科学环境科学
农业科学农业科学

背景情况:

奶牛的肠道甲 (CH4) 排放是温室气体的重要贡献者.
基于草的养系统,包括无限制放牧 (UG),零放牧 (ZG) 和草 (GS),对CH4产量产生不同的影响.
优化养策略对于减轻奶牛养殖中CH4排放至关重要.

研究的目的:

评估和比较乳母奶牛在三种不同的草基养系统下的肠道CH4排放:UG,ZG和GS.
评估不同季节和年份的CH4生产,强度和产量.
为了确定料类型和养方法对每单位料摄入量和牛奶产量的CH4输出的影响.

主要方法:

进行了为期2年的研究,对45只哺乳乳母牛进行了三种草基系统 (UG,ZG,GS) 的研究.
利用GreenFeed系统进行非侵入性,个别的肠道CH4产量测量.
在三个季节 (四月至五月,六月至七月,八月至九月) 中测量了CH4产量 (每公斤DMI),强度 (每公斤牛奶) 和产量 (每公牛/天).

主要成果:

无限制放牧 (UG) 通常表现出最低的CH4产量和强度,特别是在季节早期 (四月至五月).
草 (GS) 在大多数时期和年份中始终显示出最高的CH4产量和强度.
系统之间的差异因季节而异,UG在季节早期显示出显著的低CH4产量 (大约14g CH4/kg DMI).

结论:

养新鲜,高品质的草,特别是在季节的早期,可以有效地减少每单位料摄入量和生产的牛奶的肠道CH4排放量.
养系统显著影响CH4产量,不受限制的牧场显示出有希望的缓解潜力.
季节性变化和料质量是影响草食奶牛CH4排放的关键因素.

关键词:

奶牛牛奶牛牛奶牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛肠道甲的使用.基于草地系统的草地系统.放牧草地放牧草地放牧草地

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