食3-氧醇可减少热带条件下的料场牛的甲排放
Tiago L R Araújo1, Carlos H S Rabelo2, Abmael S Cardoso1
1UNESP, São Paulo State University, Department of Animal Sciences, 14884-900 Jaboticabal, SP, Brazil.
Journal of animal science
|July 4, 2023
概括
将3-氧醇 (3-NOP) 给料场牛,可显著降低甲排放量,但不会对动物的表现或平衡产生负面影响. 这项研究表明,3-NOP是可持续牛养殖的有效策略.
科学领域:
- 动物科学动物科学
- 农业科学 农业科学
- 环境科学 环境科学
背景情况:
- 料场牛的甲 (CH4) 排放有助于温室气体排放.
- 目前正在探索饮食策略,以减轻牛的肠道甲产量.
- 3-氧醇 (3-NOP) 是一种料添加剂,研究其降低甲的潜力.
研究的目的:
- 评估两种水平的3-氧醇 (3-NOP) 补充对甲排放的影响.
- 评估3-NOP对养场牛的平衡和表现的影响.
- 为了确定3-NOP是否影响内罗尔公牛的尸体特征.
主要方法:
- 实验1涉及138只纳洛尔公牛,在96天内养高度饮食,含有0,100或150毫克/公斤干物质 (DM) 的3-NOP.
- 实验2使用24头公牛进行甲 (CH4) 测量和平衡研究.
- 测量包括干物质摄入量 (DMI),动物表现,增益:料比,尸体特征,CH4排放量 (g/d,CH4/DMI,CH4/ADG) 和留量.
主要成果:
- 3-NOP补充剂没有对DMI,动物表现,料收益或尸体特征产生不利影响.
- 3-NOP持续且显著降低了CH4排放量,大约减少了49.3% (g/d),40.7% (CH4/DMI) 和38.6% (CH4/ADG).
- 作为CH4损失的总能量减少了42.5%的3-NOP,而气保留没有受到影响.
结论:
- 食3-氧醇 (3-NOP) 是一种有效的策略,可以大幅减少料场牛的甲排放.
- 在不影响动物表现,尸体质量或利用的情况下,可以将3-NOP纳入牛的饮食.
- 这项研究支持使用3-NOP作为减轻畜牧业对环境影响的工具.
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