Aplicación de la espectroscopía del infrarrojo cercano - NIRS - para determinar el valor nutritivo de variedades de alfalfa (Medicago sativa L) y trébol rojo (Trifolium pratense L)

Translated title of the contribution: Application of near infrared spectroscopy - NIRS - To determine the nutritional value of varieties of alfalfa (Medicago sativa L) and red clover (Trifolium pretense L)

M. Carlos Estupiñán, Fernando Demetrio Carcelen Caceres, L. Víctor Hidalgo, E. David Rojas, C. Oscar Vera, G. Sofía López, Q. Sandra Bezada

Research output: Contribution to journalArticlepeer-review

Abstract

The aim of this study was to determine the applicability of near infrared spectroscopy (NIRS) for the nutritional assessment of two important forage species in the country: alfalfa (Medicago sativa L) and red clover (Trifolium pratense L). For this, 75 samples of alfalfa varieties (SW 8210, WL 625HQ) and 75 of red clover varieties (Quiñequeli, Kendland) obtained from the paddocks of the IVITA El Mantaro Experimental Station, Junín region, Peru were used. Proximal analysis was performed determining the content of crude protein (CP), ether extract (EE), crude fibre (CF), total ash (TA) and neutral detergent fibre (NDF), and the spectrum was captured using NIRS equipment. The calibration and validation models were developed to estimate the predictive capacity using Partial Least Squares (PLS), and the accuracy and precision statistics used were the Correlation Coefficient (R), Determination Coefficient (R2), Root Mean Square Error of Calibration (RMSEC), Root Mean Square of Prediction Error (RMSEP), Ratio of Range to Error (RER) and Residual Predictive Deviation (RPD). The mathematical models obtained showed that the NIRS technique has a good predictive capacity for the nutritional components of CP, TA and NDF (R2: 0.97, 0.99, 0.94; RPD: 2.00, 2.17 and 2.00, respectively) for varieties of alfalfa and red clover.

Translated title of the contributionApplication of near infrared spectroscopy - NIRS - To determine the nutritional value of varieties of alfalfa (Medicago sativa L) and red clover (Trifolium pretense L)
Original languageSpanish
Article numbere19491
JournalRevista de Investigaciones Veterinarias del Peru
Volume32
Issue number1
DOIs
StatePublished - 23 Feb 2021
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2021 Universidad Nacional Mayor de San Marcos. All rights reserved.

Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.

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