蒙宁素减少了晚期哺乳期荷尔斯坦牛的肠道甲排放量,这些牛食高度饮食
D Onan-Martinez1, M A T de Bari1, H Olmo1
1Department of Animal Sciences, University of Florida, Gainesville, FL 32611.
JDS communications
|February 25, 2026
概括
蒙宁素补充剂显著降低了哺乳乳奶牛的肠道甲排放量和产量. 该战略提供了一种可行的方法来缓解来自牛的温室气体产量.
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:
- 甲 (CH4) 是一个主要的温室气体 (GHG),由牛通过肠道发酵排放.
- 减轻肠道CH4排放的策略,如单酶补充剂,已经产生了不同的结果.
- 了解素对CH4产量和强度的影响对于可持续的牛养殖至关重要.
研究的目的:
- 评估单素补充剂对乳母奶牛肠道CH4产量和强度的影响.
- 为了测试一种假设,即宁素可以降低乳牛的肠道CH4产量.
主要方法:
- 采用了为期2至4周的交叉设计,使用了20只哺乳乳母牛.
- 奶牛每天要么接受控制 (CON) 饮食,要么接受补充素 (MON) 的饮食.
- 用Calan门和GreenFeed系统测量了个人干物摄入量 (DMI),牛奶产量和肠道气体输出量.
主要成果:
- 蒙宁素补充剂没有显著改变DMI或能量校正牛奶 (ECM) 产量.
- 与对照组 (257.2 g/d) 相比,单素组 (207.1 g/d) 的每日CH4排放量显著减少.
- 甲产量 (g CH4 / kg DMI) 和甲强度 (g CH4 / kg ECM) 也在蒙宁治疗后分别显著和趋势性下降.
结论:
- 宁素有效地减少了哺乳乳乳母牛的每日肠道CH4排放量和甲产量.
- 这些发现支持使用单素作为减轻牛CH4排放的策略.
- 进一步的研究可以探索最佳的单酶剂量和对乳制品生产和排放的长期影响.
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