动物营养学报2016，Vol.28Issue(7)：2013-2023,11.DOI:10.3969/j.issn.1006-267x.2016.07.006
近红外反射光谱技术评定棉籽粕营养价值和蛋公鸡代谢能
Determination of Nutrient Value and Metabolizable Energy of Roosters in Cottonseed Meal by Near-Infrared Reflectance Spectroscopy
摘要
Abstract
This experiment aimed at exploring the possibility of determination of common nutrient contents and metabolizable energy of roosters in cottonseed meal by near⁃infrared reflectance spectroscopy ( NIRS) . A total of 76 cottonseed meal samples with different producing areas, years and processing methods were collected from all over China. The common nutrients of samples were analyzed, and apparent metabolizable energy and true metabolizable energy of roosters were measured by strong feeding experiment. All the samples were divid⁃ed into calibration set (n=56) and external validation set (n=20) randomly. Then NIRS calibration models were established. The results showed that:1) the variation ranges of common nutrients and metabolizable ener⁃gy were large among different cottonseed meal samples, and coefficient of variation was ranged from 2.52% to 84.75%. Coefficient of variation for moisture, ether extract, crude fiber, apparent metabolizable energy and true metabolizable energy were exceeded 10%;coefficient of variation for crude protein, ash and gross energy were 9.58%, 9.81% and 2.52%, respectively. 2) The coefficient of determination for calibration, coefficient of determination for cross⁃validation and coefficient of determination for external validation for moisture, crude protein, ether extract, crude fiber, ash and gross energy were ranged from 0. 923 5 to 0. 975 8, 0. 824 7 to 0.930 3 and 0.879 to 0.896, respectively. While the coefficient of determination for calibration, coefficient of determination for cross⁃validation and coefficient of determination for external validation of apparent metaboliz⁃able energy and true metabolizable energy were 0.969 0 and 0.926 8, 0.917 0 and 0.905 7, 0.911 and 0.892, respectively. It is concluded that calibration equation for common nutrients and metabolism can be used for rou⁃tine analysis.关键词
近红外反射光谱/棉籽粕/常规营养成分/代谢能Key words
near-infrared reflectance spectroscopy/cottonseed meal/common nutrients/metabolizable energy分类
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李玉鹏,年芳,李爱科,王薇薇,陆辉,王丽..近红外反射光谱技术评定棉籽粕营养价值和蛋公鸡代谢能[J].动物营养学报,2016,28(7):2013-2023,11.基金项目
国家科技支撑计划课题（2014BAD08B00）；“十二五”农村领域国家科技计划课题 （）
