评估发酵和微生物适应三种红海藻使用模拟技术
Stephanie A Terry1, Ana M Krüger2, Paulo M T Lima2
1Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, Lethbridge, AB T1J 3B6, Canada.
Animals : an open access journal from MDPI
|May 27, 2023
概括
红海藻Asparagopsis taxiformis有效地抑制了反动物的甲产量,但需要一个适应期. 其他海藻,如Mazzaella japonica和Palmaria mollis,对发酵或甲抑制没有显著影响.
科学领域:
- 流体微生物学 流体微生物学
- 动物营养动物营养
- 海洋生物技术 海洋生物技术
背景情况:
- 在反动物中,肠道甲 (CH4) 生产是一个重大的环境问题.
- 红色海藻显示出抑制CH4的潜力,但它们对乳头发酵参数和适应的影响尚未完全理解.
研究的目的:
- 研究三种红色海藻 (Asparagopsis taxiformis,Mazzaella japonica,Palmaria mollis) 对体外起发酵,CH4产生和适应的影响.
- 评估这些海藻作为CH4抑制剂的有效性,使用模拟技术 (RUSITEC).
主要方法:
- 这项研究使用了RUSITEC系统进行四次处理:对照和三种红海藻 (A. taxiformis,M. japonica,P. mollis) 占饮食干物质的2%.
- 实验包括一个基线阶段,一个适应阶段,一个中间阶段,以及一个持续21天的稳定阶段.
- 测量包括有机物和中性洗剂纤维可降解性,挥发性脂肪酸 (VFA) 生产,CH4和 (H2) 生产.
主要成果:
- Asparagopsis taxiformis在适应过程中减少了有机物和中性洗剂纤维可降解性,但后来恢复到控制水平.
- A. taxiformis显著降低了酸盐,酸盐和VFA总产量,同时增加了酸盐,酸盐和酸盐.
- 只有A. taxiformis抑制了CH4的产生,这种效应随着时间的推移而加剧,并增加了H2的产生,这表明它在皮环境中适应了.
结论:
- 在RUSITEC模型中,马泽拉日本菌和帕尔马里亚软不会影响起的发酵或抑制CH4的产生.
- 阿斯帕拉哥普西斯 taxiformis 是一个有效的CH4抑制剂,需要一个适应期在.
- 虽然有效,但A. taxiformis对VFA合成的显著抑制可能会限制体内生产的性能.
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