Near-infrared calibration models for estimating volatile fatty acids and methane production from in vitro rumen fermentation of different total mixed rations

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Abstract
Summary: Diverse disciplines of science use near-infrared (NIR) spectroscopy for chemical analysis because it is rapid and inexpensive, and it provides reproducible results. Many animal scientists perform in vitro rumen fermentation tests to measure the production of volatile fatty acids (VFA) and methane (indicative of energy loss) from different feeds or diets. We used NIR spectroscopy to develop calibration models that predict the production of different VFA (acetic, propionic, butyric, valeric, isovaleric, and isobutyric acids), total gas, and methane from in vitro rumen fermentation of different silage-based diets. Our models provided reliable estimates of these rumen fermentation products.
Funding Information
  • Fondazione Romeo ed Enrica Invernizzi

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