适合用途的生物炭对乳头发酵,微生物群落和牛中的甲生产的影响
Gonzalo Martinez-Fernandez1, Robert D Kinley2,3, Wendy J M Smith1
1Agriculture and Food, CSIRO, St Lucia, QLD, Australia.
Frontiers in microbiology
|December 4, 2024
概括
生物炭补充剂在受控条件下降低了牛的甲 (CH4) 排放,但不是在放牧试验中. 需要进一步的研究,以优化生物炭的使用,以减轻各种养系统中的肠发酵排放.
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:
- 生物炭被探索为反动物的抗甲原剂补充剂,以减少肠道甲 (CH4) 排放.
- 关于生物炭的有效性不一致的结果需要进一步调查影响因素,如生物炭类型,剂量和管理.
研究的目的:
- 为了评估两种不同的生物碳对乳头发酵,CH4排放和乳头微生物群的影响,在牛中食粗料的饮食.
- 评估生物炭在受控和放牧条件下减轻CH4排放的潜力.
主要方法:
- 实验1:对12头牛进行56天的受控实验,使用罗德斯草草,测试三剂生物炭 (50,100,200克/动物/天) 与糖蜜混合.
- 实验2:对45头公牛进行60天的放牧试验,给45头公牛服用一次剂量 (100克/动物/天) 的生物炭与糖蜜混合.
- 使用开放式循环呼吸室 (实验1) 和GreenFeed系统 (实验2) 测量了甲排放量. 液被分析为微生物社区和发酵代谢物.
主要成果:
- 在受控试验中,生物炭降低了8.8-12.9%的CH4排放,没有对料摄入量或青发酵产生不良影响,细菌群体的变化很小.
- 牧场试验显示,随着生物炭补充,CH4排放或生产率没有显著差异.
结论:
- 生物炭在受控养下显示出降低肠道CH4排放的潜力,但其在放牧系统中的有效性需要更多的研究.
- 未来的研究应该确定最佳的生物炭类型,剂量和输送方法,以在不影响生产率的情况下,在放牧牛中减轻CH4.
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