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The prediction of in vitro digestibility of forages by near infrared reflectance spectroscopy

AutorAndrés, Sonia ; Giráldez, Francisco Javier ; López, Secundino ; Calleja, Alfredo ; Mantecón, Ángel R.
Palabras claveNIRS
Fecha de publicación2004
EditorNear infrared spectroscopy
CitaciónProceedings of the 11th International Conference: 7001-704 (2004)
ResumenDigestibility of feeds is an essential parameter determinig their nutritive value and thus its accurate estimation is required by most of feeding systems. Currently, several in vitro techniques are commonly used for routine analyses in commercial laboratories as they are less expensive and time-consuming than the in vivo method and produce repeatable data highly correlated to those obtained with a reference in vivo procedure (Goering and Van Soest, Jones and Hayward, Tilley and Terry). Nevertheless, in vitro techiques may be also expensive and time-consuming methods. Therefore, an alternative is desirable when a large-scale testing of feedstuffs is required. Near infrared reflectance spectroscopy (NIRS) has been successful in predicting, rapidly and accurately, chemical composition and digestibility in a diverse group of feeds, including forages quality (Norris et al.). Nevertheless, to our best knowledge, there is little information comparing the application of NIRS to predict in vitro digestibility of different feed constituents of the same constituent but measured according different techniques. The aim of this study was to compare the calibrations obtained either with the Tilley & Terry or with the Goering & Van Soest procedures, which are two of the most used in vitro techniques in the feed evaluation for ruminants.
Descripción5 pages, 3 tables.-- Papers presented at the 11th International Conference on Near Infrared Spectroscopy (NIR-2003), held in Córdoba, Spain.
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