Definition of NIR-analysis wavelengths biologically significant for quantification of digestion of forage in the rumen

amidon azucares barley cebada contenido de fibras contenido proteico degradation deterioro digestible fibre espectrometria fibra asimilable fibre content fibre digestible foin fourrage grain grain feed granos pienso hay heno ndf neutral detergent fibre orge protein content rumiante ruminant ruminants spectrometrie spectrometry starch sucres sugars teneur en fibres