棉花生物炭对甲排放的影响,使用模拟器
Shiqi Zhang1, Yaqian Zhang1, Yankun Zhao1
1Laboratory of Quality and Safety Risk Assessment for Agro-Products of Ministry of Agriculture and Rural Affairs, Key Laboratory of Agro-Products Quality and Safety of Xinjiang, Institute of Quality Standards& Testing Technology for Agro-Products, Xinjiang Academy of Agricultural Sciences, Urumqi, China.
PloS one
|December 4, 2025
概括
将棉花茎生物炭 (CSB) 添加到奶牛料中,减少了反气和甲的产生. 这项研究表明,CSB可以通过抑制乳头发酵和纤维降解来最大限度地减少排放.
科学领域:
- 农业科学 农业科学
- 动物科学动物科学
- 环境科学 环境科学
背景情况:
- 棉花茎的价值化面临着由于高木质化的挑战,导致浪费.
- 从生物质热解中获得的生物炭具有减少反动物甲排放的潜力.
研究的目的:
- 为了研究棉花茎生物炭 (CSB) 作为料添加剂对奶牛发酵的影响.
- 在实验室中评估CSB对甲排放,微生物群落和营养物质降解的影响.
主要方法:
- 棉花茎被烧解以产生CSB,并以0%,3%和6%的水平添加到奶牛的饮食中.
- 经过实验室静态培养方法,模拟了与荷尔斯坦奶牛液的发酵.
- 分析了发酵参数,气体产生,营养物质消失,微生物种群和代谢物.
主要成果:
- 添加CSB增加了乳头的pH值,并显著减少了总气体,甲 (CH4),二氧化碳 (CO2) 和 (H2) 的产量.
- 随着CSB水平的增加,总挥发性脂肪酸度下降,而微生物多样性和总DNA保持不变.
- CSB改变了氨基酸和脂肪酸代谢中的关键代谢物,降低了细胞酶活性,并抑制了干物质和纤维降解.
结论:
- 将3%或6%的CSB添加到奶牛料中,有效地减少了体外转类气体的产生.
- 减少气体产生的CSB机制包括抑制反动物发酵途径,特别是NDF降解.
相关概念视频
Microbes and Methanogenesis
Methanogenesis is a critical microbial process in anaerobic ecosystems responsible for the biological production of methane, a potent greenhouse gas and valuable biofuel. This metabolic pathway is primarily facilitated by methanogenic archaea, which thrive in anoxic environments such as wetlands, sediments, and animal gastrointestinal tracts. The absence of oxygen in these habitats prevents aerobic respiration, thereby favoring alternative biochemical pathways for organic matter degradation.In...
Microbes and Climate Change
Microorganisms are pivotal agents in Earth's biogeochemical cycles, significantly influencing climate dynamics through their metabolic activities. These microbes modulate the levels of key greenhouse gases by both contributing to and helping mitigate climate change.Microbial Contributions to Greenhouse Gas EmissionsRising global temperatures accelerate microbial metabolism, which, in turn, speeds up the decomposition of organic matter. This process releases carbon dioxide (CO₂) through...


