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Updated: Jul 27, 2025

The Use of an Automated System GreenFeed to Monitor Enteric Methane and Carbon Dioxide Emissions from Ruminant Animals
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从消耗二元C3-C4饮食的牛肉中排放甲和13C组成.

David M Jaramillo1, Martin Ruiz-Moreno2, Joao M B Vendramini3

  • 1Institute for Environmentally Integrated Dairy Management, USDA-ARS U.S. Dairy Forage Research Center, Marshfield, WI 54449, USA.

Journal of animal science
|June 6, 2023
PubMed
概括

在bahiagrass饮食中包括根茎花生 (RP) 并没有改变牛肉牛的甲产量. 然而,δ13C技术有效地追踪了饮食对肠道甲排放的贡献,这对于C3-C4二元饮食非常有用.

关键词:
消化能力 消化能力料料是一种料.温室气体排放量排放量 温室气体排放量排放量摄入量 摄入量 摄入量这是一种反动物.

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相关概念视频

Carbon-13 (¹³C) NMR: Overview01:10

Carbon-13 (¹³C) NMR: Overview

Carbon-13 is a naturally occurring NMR-active isotope of carbon with a low natural abundance of 1.1%. In contrast, carbon-12 is the most abundant isotope of carbon with zero nuclear spin. Therefore, it is NMR inactive. The gyromagnetic ratio of carbon-13 is smaller than that of protons. As a result, carbon-13 resonance is about 6000 times weaker than proton resonance. For a given magnetic field strength, the resonance frequency of carbon-13 is about one-fourth of the resonance frequency for...
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¹³C NMR: ¹H–¹³C Decoupling

The probability of having two carbon-13 atoms next to each other is negligible because of the low natural abundance of carbon-13. Consequently, peak splitting due to carbon-carbon spin-spin coupling is not observed in spectra. However, protons up to three sigma bonds away split the carbon signal according to the n+1 rule, resulting in complicated spectra.
A broadband decoupling technique is used to simplify these complex, sometimes overlapping, signals. Broadband decoupling relies on a...
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