What question did this study set out to answer?

This research aims to enhance the prediction of indigestible neutral detergent fiber in tropical grasses using portable near-infrared spectroscopy and data fusion techniques.

July 12, 2026Spectrochimica Acta Part A Molecular and Biomolecular SpectroscopyOpen Access

Portable near-infrared spectroscopy and data fusion with in vitro digestibility improve prediction of indigestible neutral detergent fiber in tropical grasses

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Authors

COCatarina Fernandes de OliveiraUniversidade Federal Rural do Rio de Janeiro AAAriel Thais Rodrigues AlvesUniversidade Federal Rural do Rio de Janeiro PCPriscila Pereira CarneiroUniversidade Federal Rural do Rio de Janeiro

Discussion

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Implication

Randomized trial evaluates improved iNDF prediction in tropical grasses, suggesting portable NIR as an effective tool.

Key Points

This research aims to enhance the prediction of indigestible neutral detergent fiber in tropical grasses using portable near-infrared spectroscopy and data fusion techniques.
Collected 275 samples from Urochloa and Megathyrsus spp. across three regions
Analyzed samples for dry matter, organic matter, nitrogen, NDF, and in vitro digestibility
Evaluated five predictor sets using partial least squares regression and external validation with stratified training and testing subsets
Spectra plus in vitro NDF digestibility yielded RMSE of 26.8 g kg−1 DM, R2 of 0.888, and RPD of 2.96
Combined spectra with laboratory composition and in vitro NDF digestibility resulted in RMSE of 27.1 g kg−1 DM, R2 of 0.889, and RPD of 2.97
Spectra-only models had RPD values below 2.0, indicating inferior predictive performance

Cite This Study

Oliveira et al. (2026) studied this question.

synapsesocial.com/papers/6a532e014f7abc118adeca44 https://doi.org/10.1016/j.saa.2026.128408

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July 12, 2026Spectrochimica Acta Part A Molecular and Biomolecular SpectroscopyOpen Access

Portable near-infrared spectroscopy and data fusion with in vitro digestibility improve prediction of indigestible neutral detergent fiber in tropical grasses

View Full Paper

Ask AI

Bookmark

Authors

Discussion

Member takes

Implication

Randomized trial evaluates improved iNDF prediction in tropical grasses, suggesting portable NIR as an effective tool.

Key Points

This research aims to enhance the prediction of indigestible neutral detergent fiber in tropical grasses using portable near-infrared spectroscopy and data fusion techniques.
Collected 275 samples from Urochloa and Megathyrsus spp. across three regions
Analyzed samples for dry matter, organic matter, nitrogen, NDF, and in vitro digestibility
Evaluated five predictor sets using partial least squares regression and external validation with stratified training and testing subsets
Spectra plus in vitro NDF digestibility yielded RMSE of 26.8 g kg−1 DM, R2 of 0.888, and RPD of 2.96
Combined spectra with laboratory composition and in vitro NDF digestibility resulted in RMSE of 27.1 g kg−1 DM, R2 of 0.889, and RPD of 2.97
Spectra-only models had RPD values below 2.0, indicating inferior predictive performance

Cite This Study

Oliveira et al. (2026) studied this question.

synapsesocial.com/papers/6a532e014f7abc118adeca44 https://doi.org/10.1016/j.saa.2026.128408

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