| 瘤胃产甲烷菌与其他微生物间的氢传递及其调控研究进展 |
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| 引用本文： | 金舒文,王佳堃.瘤胃产甲烷菌与其他微生物间的氢传递及其调控研究进展[J].中国畜牧杂志,2019(2):1-6. |
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| 作者姓名： | 金舒文 王佳堃 |
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| 作者单位： | 1.浙江大学奶业科学研究所 |
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| 基金项目： | 国家自然基金面上项目(31372337);浙江省自然科学基金项目(Y13C170003) |
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| 摘 要： | 在反刍动物瘤胃中产甲烷菌生成甲烷既造成能量的浪费又产生大量温室气体,因此减少瘤胃甲烷生成与排放是提升生产效率与维持可持续发展的要求。瘤胃内的产甲烷菌通过共生、黏附和伴生模式,分别从原虫、细菌和真菌中摄取氢,保证氢营养型甲烷生成途径的顺利进行。抑杀原虫和产氢细菌、竞争性结合氢和阻断氢生成甲烷是基于氢调控抑制甲烷生成的途径。由于瘤胃微生物的冗余和互作,降甲烷的同时,瘤胃中饲料消化可能受到抑制,且单一的氢调控往往会诱发瘤胃的适应,瘤胃的降甲烷效果仅能短时间维持。为此,需从瘤胃微生物整体出发,通过多种氢调控机制的添加剂联用及间歇饲喂、幼龄反刍动物瘤胃早期调控、甲烷生成途径关键酶调控等的综合应用,实现更优的甲烷减排。
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| 关 键 词： | 种间氢传递 氢调控 甲烷减排 产甲烷菌 瘤胃微生物 |
Interspecific Hydrogen Transfer between Methanogens and Other Microorganisms in Rumen and Its Regulation Strategies:a Review |
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| JIN Shu-wen,WANG Jia-.Interspecific Hydrogen Transfer between Methanogens and Other Microorganisms in Rumen and Its Regulation Strategies:a Review[J].Chinese Journal of Animal Science,2019(2):1-6. |
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| Authors: | JIN Shu-wen WANG Jia- |
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| Institution: | ,Institute of Dairy Science,Zhejiang University |
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| Abstract: | The process of methane emission by methanogens in the rumen of ruminants not only causes waste of energy, but also produces a large amount of greenhouse gases. The mitigation of methane emission of rumen is a requirement for both improving production efficiency and sustainable development. The methanogens in the rumen absorb hydrogen from protozoa, bacteria and fungi through mutualistic symbiosis, adhesion and associated modes, ensuring the smooth development of hydrogen-nutrient methane production pathways. Inhibition of protozoa and hydrogen-producing bacteria, competitive binding of hydrogen and blocking of hydrogen to form methane are strategies to inhibit methane production based on hydrogen regulation. Due to the redundancy and interaction of rumen microorganisms, while methane is reduced, feed digestion in the rumen may be inhibited, and a simplex hydrogen regulation often induces rumen adaptation, thus the methane mitigation effect can only be maintained for a short period of time. To this end, it is necessary to seek better methane reduction technology based on the dynamic rumen microbial community and according to the combination of multiple technologies. |
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| Keywords: | Interspecific hydrogen transfer Hydrogen regulation Methane mitigation |
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