title: [Progress in application of near infrared reflectance spectroscopy to the study of ruminant nutrition].
abstract: The near infrared reflectance spectroscopy (NIRS) technique has been widely used in the study of ruminant nutrition with many of its operational merits such as facility, shortcut and accuracy, etc. Study suggested that the standard error of cross-validation (SECV) ranges from 1.6% to 2.8% in predicting organic matter digestion of ruminant diet by using the NIRS technique; the chemical and biological compositions and the microbial protein proportion in the duodenal digesta can be predicted accurately using the NIRS. However, the kinetic parameters of degradation are not well predicted; The prediction of intake of stall feeding animals by using NIRS is similar to the determination of in vivo method, but the standard error of prediction is about 14% when using the NIRS to predict intake of grazing animals. All of the studies suggest that big progress has been made in using NIRS technique to predict feed digestion and evaluate the diet quality and intake of ruminant animals, which also suggest that the NIRS technique has a wide prospect in the study of ruminant nutrition.
authors.affiliation: Key Laboratory of Arid and Grassland Ecology (The Ministry of Education), Lanzhou University, Lanzhou 730000, China. guoxsh07@lzu.edu.cn
authors.forename: Xu-Sheng
authors.initials: XS
authors.lastname: Guo
authors.forename: Zhan-Huan
authors.initials: ZH
authors.lastname: Shang
authors.forename: Xiang-Wen
authors.initials: XW
authors.lastname: Fang
authors.forename: Rui-Jun
authors.initials: RJ
authors.lastname: Long
mesh_terms: D000821:Animal Feed / Q000032:analysis*; D000818:Animals; D004379:Duodenal Neoplasms / Q000382:microbiology / Q000662:veterinary; D009747:Nutritional Physiological Phenomena / Q000502:physiology; D009753:Nutritive Value; D012418:Ruminants / Q000378:metabolism / Q000382:microbiology / Q000502:physiology; D013055:Spectrophotometry, Infrared / Q000379:methods*