牛的乳房甲排放和母乳养表现,在草基饮食中食了菜蛋糕和麦
S E Räisänen1, Þ H Sigurðardóttir2, A Halmemies-Beauchet-Filleau2
1Department of Agricultural Sciences, University of Helsinki, FI-00014 Helsinki, Finland; Department of Environmental Systems Science, Institute of Agricultural Sciences, ETH Zürich, Zürich 8092, Switzerland.
Journal of dairy science
|April 20, 2024
概括
养奶牛的牛油蛋糕和麦可以减少甲的产生和强度,同时提高料的效率. 这种实用方法可以减轻北欧乳制品业务的肠道甲排放,而不会影响牛奶产量.
科学领域:
- 动物科学动物科学
- 营养生物化学 营养生物化学
- 环境科学 环境科学
背景情况:
- 乳牛产生的甲 (CH4) 排放有助于温室气体的排放.
- 寻求饮食策略以减轻CH4的产量,同时保持动物的表现.
- 饮食中的脂质含量和来源可以影响食发酵和CH4产量.
研究的目的:
- 为了评估食用油脂从菜蛋糕和麦对体CH4排放的影响.
- 评估这些料对奶牛哺乳表现的影响.
- 为了确定能量利用的效率和CH4强度,以应对饮食治疗.
主要方法:
- 一个反向设计实验,用12只哺乳期北欧红牛在3个周期 (每期4周) 进行.
- 治疗涉及缩料,其中包括油菜蛋糕和麦 (RSC+O) 或油菜粉和大麦 (RSM+B).
- 测量包括使用GreenFeed系统的干物质摄入量 (DMI),牛奶产量,牛奶成分和气体交换 (CH4生产).
主要成果:
- 与RSM+B相比,RSC+O饮食导致DMI降低1.6公斤/天,牛奶产量增加1.0公斤/天的趋势.
- 牛奶能量效率 (ME) 在RSC+O饮食中更高.
- 甲产量 (g/d) 下降了9.4%,而CH4强度 (g/kg ECM) 对于RSC+O下降了11.7%,尽管CH4产量 (g/kg DMI) 没有差异.
结论:
- 在以草为基础的饮食中用麦养菜蛋糕,提高了哺乳母牛的料效率.
- 这种饮食策略有效地降低了牛CH4的产量和强度.
- 这些发现表明,使用常见料的北欧奶牛养殖中减轻CH4排放的实用方法.
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