NIRS for Predicting Nutritive Value of Elymus Sibiricus

文献类型： 外文期刊

第一作者： Bai Shi-qie

作者： Bai Shi-qie;Yan Jia-jun;Li Da-xu;You Ming-hong;Zhang Yu;Zhang Chang-bing;Yan Xu;Bai Shi-qie;Gan You-min;Yan Xu;Hu Chao;Dao Zhi-xue

作者机构：

关键词： NIRS;Elymus sibiricus;CP;NDF;IVDMD

期刊名称：SPECTROSCOPY AND SPECTRAL ANALYSIS （ 影响因子：0.589； 五年影响因子：0.504 ）

ISSN： 1000-0593

年卷期： 2015 年 35 卷 8 期

页码：

收录情况： SCI

摘要： Siberian wildrye (Elymus sibiricus L.) is one of the predominant pasture species in Qinghai-Tibet plateau of China. It supplies a large number of kidders to domestic animals in spring and winter, and provides a large proportion of the summer and autumn grazing in these alpine regions. Crude protein (CP), acid detergent fiber (ADF), neutral detergent fiber (NDF) and in vitro dry matter digestibility (IVDMD) are the most important aspects of nutritive value of forages. A successful application of near infrared spectroscopy (NIRS) in combination with partial least square regression (PLSR) for the determination of four parameters (CP, ADF, NDF and IVDMD) of Siberian wildrye was developed. The standard errors of calibration (SEC, %DM) and R-cal(2) values (in parentheses) were 0.329 9(0. 994 5), 0.779 9(0. 949 9), 1.343 0(0. 913 3), and 1.376 2 (0. 982 2) for CP, ADF, NDF and IVDMD equations, respectively. The standard errors of prediction (SEP, %DM) and R-val(2) values (in parentheses) were 0. 362 1(0. 993 8), 0. 787 8(0. 944 9), 1. 385 2.(0. 890 7), and 1. 430 3(0. 979 0) for CP, ADF, NDF and IVDMD, respectively. A good correlation (r>0. 943 8) was found between results from NIRS and the traditional chemical method, and residual predictive deviation (RPD) ranged from 3. 02 to 12. 63. It was concluded that NIR spectroscopic technique associated with chemometrics is sufficiently sensitive to allow the accurate prediction of the concentrations of components (CP, ADF and NDF) and IVDMD of Siberian wildrye.

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