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)

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

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

Resumen

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.

Título traducido de la contribuciónApplication of near infrared spectroscopy - NIRS - To determine the nutritional value of varieties of alfalfa (Medicago sativa L) and red clover (Trifolium pretense L)
Idioma originalEspañol
Número de artículoe19491
PublicaciónRevista de Investigaciones Veterinarias del Peru
Volumen32
N.º1
DOI
EstadoPublicada - 23 feb 2021

Nota bibliográfica

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Palabras clave

  • Calibration
  • Legume
  • NIRS
  • Neutral detergent fibre
  • Proximal analysis

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