用一种基于海藻的料添加剂减轻放牧肉牛的甲排放:对气候智能农业的影响
Paulo Meo-Filho1, John F Ramirez-Agudelo1, Ermias Kebreab1
1Department of Animal Science, University of California, Davis, CA 95616.
概括
补充肉牛含有形藻 (Brominata) 的颗粒海藻显著降低了肠道甲 (CH4) 排放. 这项研究显示了一种可行的方法来降低放牧牲畜产生的温室气体排放量.
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:
- 动物畜牧业是全球温室气体排放的重要贡献者.
- 肠道甲 (CH4) 是一种主要的温室气体,在牲畜消化过程中产生.
- 减少来自牛的CH4排放对于环境可持续性至关重要.
研究的目的:
- 为了评估含有型 (Brominata) 的颗粒海藻 (Asparagopsis taxiformis) 作为肠道CH4抑制剂的有效性.
- 在农场条件下评估布罗米纳塔对牧场肉牛CH4排放的影响.
主要方法:
- 二十四头牛肉被分为对照组和Brominata治疗组.
- 使用GreenFeed系统测量了CH4,二氧化碳 (CO2) 和 (H2) 的排放量.
- 在整个研究阶段,对活体体重,平均每日增量和干物质摄入量进行了监测.
主要成果:
- 酸盐补充剂在最佳和减少摄入阶段显著降低了平均肠道CH4排放量 (115g/d与185g/d相比).
- 两组之间在活体体重,平均每日增加或干物质摄入量方面没有发现显著差异.
- 组间的二氧化碳排放量相似,而对照组的二氧化排放量较低.
结论:
- 含型藻 (Brominata) 的颗粒海藻显示出作为有效的料添加剂的潜力,以减轻放牧肉牛的肠道CH4排放.
- 这种方法提供了一种切实可行的策略,以减少反动物畜牧业对环境的影响.
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