Real-Time Quantification of Crude Protein and Neutral Detergent Fibre in Pastures under Montado Ecosystem Using the Portable NIR Spectrometer

The Montado is a Mediterranean agro–forestry–pastoral ecosystem. Knowledge of pastures’ nutritional value is critical for farm managers’ decision-making. Laboratory determinations are very expensive, destructive and costly, in terms of time and labour. The objective of this experimental work was to...

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Autores principales:	Emanuel Carreira, João Serrano, Shakib Shahidian, Julio Nogales-Bueno, Ana Elisa Rato
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	micro NIR portable NIR spectrometry pastures crude protein fibre real-time Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/e41c30582e7044a381de919d3a3cb179
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spelling	oai:doaj.org-article:e41c30582e7044a381de919d3a3cb1792021-11-25T16:33:37ZReal-Time Quantification of Crude Protein and Neutral Detergent Fibre in Pastures under Montado Ecosystem Using the Portable NIR Spectrometer10.3390/app1122106382076-3417https://doaj.org/article/e41c30582e7044a381de919d3a3cb1792021-11-01T00:00:00Zhttps://www.mdpi.com/2076-3417/11/22/10638https://doaj.org/toc/2076-3417The Montado is a Mediterranean agro–forestry–pastoral ecosystem. Knowledge of pastures’ nutritional value is critical for farm managers’ decision-making. Laboratory determinations are very expensive, destructive and costly, in terms of time and labour. The objective of this experimental work was to calibrate and validate a portable near-infrared spectrometer (micro-NIR) to predict the nutritive value (neutral detergent fibre, NDF and crude protein, CP) of pastures in the peak of spring 2021. Thus, a total of 87 pasture samples were collected at eight experimental fields located in the Alentejo, Southern region of Portugal. The results show good correlations between in-situ micro-NIR measurements and pasture NDF reference values (R<sup>2</sup> of 0.73 and 0.69 for calibration and validation models, respectively), and a moderate correlation between micro-NIR measurements and pasture CP reference values (R<sup>2</sup> of 0.51 and 0.36 for calibration and validation models, respectively). These results show the potential of this tool for the quick evaluation of pasture quality and constitute a starting point for future work, which should include the monitoring of temporal variability (throughout the entire vegetative cycle of the pasture) and spatial (with geo-referenced information) diversity of pastures characteristic of the Montado ecosystem in the Mediterranean region.Emanuel CarreiraJoão SerranoShakib ShahidianJulio Nogales-BuenoAna Elisa RatoMDPI AGarticlemicro NIRportable NIR spectrometrypasturescrude proteinfibrereal-timeTechnologyTEngineering (General). Civil engineering (General)TA1-2040Biology (General)QH301-705.5PhysicsQC1-999ChemistryQD1-999ENApplied Sciences, Vol 11, Iss 10638, p 10638 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	micro NIR portable NIR spectrometry pastures crude protein fibre real-time Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
spellingShingle	micro NIR portable NIR spectrometry pastures crude protein fibre real-time Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999 Emanuel Carreira João Serrano Shakib Shahidian Julio Nogales-Bueno Ana Elisa Rato Real-Time Quantification of Crude Protein and Neutral Detergent Fibre in Pastures under Montado Ecosystem Using the Portable NIR Spectrometer
description	The Montado is a Mediterranean agro–forestry–pastoral ecosystem. Knowledge of pastures’ nutritional value is critical for farm managers’ decision-making. Laboratory determinations are very expensive, destructive and costly, in terms of time and labour. The objective of this experimental work was to calibrate and validate a portable near-infrared spectrometer (micro-NIR) to predict the nutritive value (neutral detergent fibre, NDF and crude protein, CP) of pastures in the peak of spring 2021. Thus, a total of 87 pasture samples were collected at eight experimental fields located in the Alentejo, Southern region of Portugal. The results show good correlations between in-situ micro-NIR measurements and pasture NDF reference values (R<sup>2</sup> of 0.73 and 0.69 for calibration and validation models, respectively), and a moderate correlation between micro-NIR measurements and pasture CP reference values (R<sup>2</sup> of 0.51 and 0.36 for calibration and validation models, respectively). These results show the potential of this tool for the quick evaluation of pasture quality and constitute a starting point for future work, which should include the monitoring of temporal variability (throughout the entire vegetative cycle of the pasture) and spatial (with geo-referenced information) diversity of pastures characteristic of the Montado ecosystem in the Mediterranean region.
format	article
author	Emanuel Carreira João Serrano Shakib Shahidian Julio Nogales-Bueno Ana Elisa Rato
author_facet	Emanuel Carreira João Serrano Shakib Shahidian Julio Nogales-Bueno Ana Elisa Rato
author_sort	Emanuel Carreira
title	Real-Time Quantification of Crude Protein and Neutral Detergent Fibre in Pastures under Montado Ecosystem Using the Portable NIR Spectrometer
title_short	Real-Time Quantification of Crude Protein and Neutral Detergent Fibre in Pastures under Montado Ecosystem Using the Portable NIR Spectrometer
title_full	Real-Time Quantification of Crude Protein and Neutral Detergent Fibre in Pastures under Montado Ecosystem Using the Portable NIR Spectrometer
title_fullStr	Real-Time Quantification of Crude Protein and Neutral Detergent Fibre in Pastures under Montado Ecosystem Using the Portable NIR Spectrometer
title_full_unstemmed	Real-Time Quantification of Crude Protein and Neutral Detergent Fibre in Pastures under Montado Ecosystem Using the Portable NIR Spectrometer
title_sort	real-time quantification of crude protein and neutral detergent fibre in pastures under montado ecosystem using the portable nir spectrometer
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/e41c30582e7044a381de919d3a3cb179
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Real-Time Quantification of Crude Protein and Neutral Detergent Fibre in Pastures under Montado Ecosystem Using the Portable NIR Spectrometer

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