02475nam a2200397 a 450000100080000000500110000800800410001910000180006024500790007826000400015730000100019749000450020752013630025265000100161565000220162565000200164765000250166765000130169265000220170565000140172765300400174165300220178165300250180365300310182865300300185965300090188965300180189865300210191665300190193765300190195665300180197565300170199365300290201070000170203970000210205615272972015-09-21       1985    bl uuuu     u0uu1 u    #d1 aMARTEN, G. C.  aNear infrared reflectance spectroscopy (NIRS)banalysis of forage quality.  a[Washington, D.C.?]: USDA-ARSc1985  a95 p.  a(USDA-ARS. Agriculture Handaboock, 643).  aNear infrared reflectance spectroscopy (NIRS) is a nonconsumptive, instrumental method for fast, accurate, and precise evaluation of the chemical composition and associated feeding value attributes of forages and other feedstuffs provided the proper procedures are followed. Each of the major organic feed components has absorption characteristics (due to vibrations arising from the stretching and bending of H bonds associated with C, O, and N) in the near infrared region that are specific to the component. These absorption characteristics primarily determine diffuse reflectance, which gives us the means for assessing composition. This handbook is intended to provide an overview of the history of NIRS use for forage quality analysis, a summary of available equipment and computer software, recommended conventional and NIRS procedures for analysis of forage quality, an explanation of how and why NIRS functions, recommended NIRS instrument calibration (including equation development, validation, monitoring and transfer), progress in NIRS technology transfer, and consideration of future applications and certification procedures for NIRS technology. Readers may find that specific chapters meet their informational needs, or they may wish to read all chapters, appendixes, and supplements sequentially for a complete interpretation of the subject.  aFeeds  aforage evaluation  aNutritive value  aComposição quimica  aForragem  aPlanta forrageira  aQualidade  aEspectrofotometria de infravermelho  aFeed formulations  aFeedstuff evaluation  aInfrared spectrophotometry  aNear infrared reflectance  aNIRS  aNIRS analysis  aNIRS calibration  aNIRS equations  aNIRS equipment  aNIRS software  aNIRS spectra  aNIRS technology transfer1 aSHENK, J. S.1 aBARTON II, F. E.