| 光谱学与光谱分析 |
|
|
|
|
|
| Evaluation of Complex Diet Dry Matter Digestibility of Sheep Using Spectra Difference |
| WANG Hai1，2, ZHANG Ying-jun1*, LIN Li-jun1, SHU Bin1, NA Ri-su2, WANG Ning2, QIN Yan2 |
| 1. Institute of Grassland, China Agricultural University, Beijing 100193, China2. Grassland Institute of Chinese Academy of Agricultural Sciences, Huhhot 010010, China |
|
|
|
|
Abstract The present study aimed to predict the dry matter digestibility (DMD) of animals fed complex diet using the spectra difference between diets and feces by near infrared reflectance spectroscopy (NIRS). Four indoor experiments were carried out with artificial mixed complex diets in the state field observatory stations located at Hebei province. The sheep were used as tested animals. One hundred and four parts of “diet-feces” were obtained and divided into a calibration sample set (70 samples) and a validation sample set (34 samples). The spectra difference between diets and feces, and the partial least square (PLS) were used to calibrate the models of DMD of sheep. The results indicated that the optimum range of spectrum was 8 656-4 310 cm-1. The optimum proceeding method was multivariate scattering correction + first derivative + Norris smoothing. The optimum number of factors was 7. The root mean square error of prediction (RMSEP) was 2.46%, and the RPD value of validation was above 2.5. The coefficient of correlation between the actual and predicted DMD using the NIRS was 0.8339, indicating that the NIRS could be used to evaluate dry matter digestibility of sheep fed complex diets.
|
|
Received: 2009-07-09
Accepted: 2009-10-12
|
|
|
|
Corresponding Authors:
ZHANG Ying-jun
E-mail: zhangyj@cau.edu.cn
|
|
[1] REN Ji-zhou(任继周). Scientific Research Methods of Grass Industy(草业科学研究方法). Beijing: China Agricultural Press(北京：中国农业出版社), 1998. 185.
[2] Norris K H, Barnes R F, Moore J E, et al. Journal of Animal Sciences, 1976, 43(4): 889.
[3] GUO Xu-sheng, SHANG Zhan-huan, FANG Xiang-wen, et al(郭旭生，尚占环，方向文，等). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2009, 29(3): 641.
[4] Lyons R K, Stuth J W. J. Range Manage., 1992, 45: 238.
[5] Boval M, Coate D B, Lecomte P, et al. Animal Feed Science and Technology, 2004, 114: 19.
[6] Agung P, Mitsunori K, Takehiro N, et al. Sci. Technol.(Jpn.), 1998, 69(3): 253.
[7] Lin L J, Luo H L, Zhang Y J, et al. Journal of Agricultural Science, 2007, 145: 87.
[8] SHU Bin, ZHANG Ying-jun, LIN Li-jun, et al. Rangeland and Ecology & Management, 2009, 62(2): 193.
[9] Park R S, Agnew R E, Gordon F J, et al. Animal Feed Science and Technology, 1998, 72(1): 155.
[10] Sinnaeve G, Dardenne P, Agneessens R, et al. Journal of Near Infrared Spectroscopy, 1994, 2(1): 79.
[11] Ding Li-min，Rong Yi，JI Cheng，et al(丁丽敏，戎 易，计 成，等). China Feed(中国饲料), 1997, (2): 8.
|
| [1] |
YAN Xu1,2,3, BAI Shi-qie1, 2*, YAN Jia-jun1, HU Chao4, LI Da-xu1, YOU Ming-hong1, ZHANG Yu1, DAO Zhi-xue4, ZHANG Chang-bing1, GAN You-min2 . NIRS for Predicting Nutritive Value of Elymus Sibiricus [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2015, 35(08): 2103-2107. |
| [2] |
HU Chao1, 2, BAI Shi-qie1, 2*, ZHANG Yu1, YAN Jia-jun1, YOU Ming-hong1, LI Da-xu1, BAI Ling1, ZHANG Jin1 . Near-Infrared Reflectance Spectroscopy Analytic Model Established for the IVDMD of Cichorium intybus L. [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2014, 34(08): 2085-2088. |
| [3] |
BAI Qi-lin1，4, CHEN Shao-jiang1*, DONG Xiao-ling2, MENG Qing-xiang2, YAN Yan-lu3, DAI Jing-rui1 . Prediction of IVDMD with Near Infrared Reflectance Spectroscopy (NIRS) in Maize Stalk [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2006, 26(02): 271-274. |
|
|
|
|
