甲预测方程包括菌属作为预测变量,提高预测准确度
Boyang Zhang1, Shili Lin2, Luis Moraes1,3
1Department of Animal Sciences, The Ohio State University, Columbus, OH, 43210, USA.
Scientific reports
|December 2, 2023
概括
从反动物的甲 (CH4) 排放的准确预测是通过结合反动物微生物改进. 使用机器学习方法的新型模型确定了关键的微生物预测因素,提高了准确性,并为缓解策略提供了生物标志物.
科学领域:
- 动物科学动物科学
- 环境科学 环境科学
- 微生物学 微生物学
背景情况:
- 动物甲 (CH4) 排放带来了环境挑战,需要精确的库存预测.
- 目前的模型忽略了肠微生物群的显著预测能力,这是CH4.4的直接来源.
研究的目的:
- 开发新的CH4预测模型,将肠微生物与动物和料数据相结合.
- 评估四种统计/机器学习 (ML) 方法在羊中CH4预测的有效性.
主要方法:
- 开发了使用绵羊数据的线性混合模型 (ANIM-B和DMI-B),包括动物,料和肠微生物群 (330个属).
- 应用了四种ML方法:随机森林结合增强 (RF-B),LASSO,glmmLasso和SCAD.
- 使用200个随机数据分割和没有分割的拟合性能评估了预测性能.
主要成果:
- 包括微生物预测因素显著改善了模型准确性,减少了RMSPE和MAE,并增加了CCC.
- glmmLasso和SCAD显著减少了两种型号的AIC和BIC.
- 优化模型确定了特定的细菌属和动物数据作为CH4生产和产量的关键预测因素.
结论:
- 体微生物群数据对于提高CH4排放预测模型的准确性和稳定性至关重要.
- 机器学习方法有效地从高维数据中选择微生物预测因素,防止过度拟合.
- 已识别的微生物预测因子可以作为羊中CH4排放的有价值的生物标志物,有助于减轻排放.
相关概念视频
01:29Overview of Archaea
Archaea, named after the Archaean eon, represent a unique domain of life, distinct from bacteria and eukaryotes, with remarkable traits. Their cellular and molecular features, ecological adaptability, and industrial relevance highlight their importance in understanding life processes and leveraging biotechnology.Cellular and Molecular CharacteristicsA defining feature of archaea is their unique membrane composition. Archaeal membranes contain ether-linked isoprenoid lipids, which confer...
01:26Microbes 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...
01:27Microbes 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...
01:27Microbiota of the Large Intestine
The large intestine hosts the most densely populated microbial ecosystem in the human body. This complex community primarily consists of anaerobic bacteria, with Bacillota (formerly Firmicutes) and Bacteroidota (formerly Bacteroidetes) as the predominant groups. The distribution of these microbes varies along different sections of the large intestine, influenced by local environmental factors such as oxygen availability and nutrient composition.The cecum, located at the beginning of the large...