CAJ | 학술논문

菊苣（Cichoriumintybus L．）是一种新型的高产优质饲用牧草，具有极大的推广利用价值。体外干物质消化率（in vitro dry matter digestibility，IVDMD）是评价饲草营养价值的重要指标之一。建立菊苣体外干物质消化率的NIRS定量分析模型的研究，采集了72个品种、不同基因型、不同生长发育时期的204个菊苣地上部分为样品，应用傅里叶变换近红外漫反射光谱技术，通过采用不同的回归算法，比较不同的光谱范围和光谱预处理方法，建立了8个菊苣体外干物质消化率（IVDMD）的近红外漫反射光谱校正模型，从中选出最佳参数的校正模型。其校正决定系数（R2cal）和外部验证决定系数（R2val）分别为0．95317和0．90455，校正标准差（RMSEC）和预测标准差（RMSEP）分别为1．97799％和2．00882％，预测值与化学值间的相关系数（r）达0．95108。结果表明，利用近红外漫反射光谱法来测定菊苣体外干物质消化率（IVDMD）是可行的，可为菊苣体外干物质消化率（IVDMD）的测定提供快速的分析测定方法。
국거（Cichoriumintybus L．）시일충신형적고산우질사용목초，구유겁대적추엄이용개치。체외간물질소화솔（in vitro dry matter digestibility，IVDMD）시평개사초영양개치적중요지표지일。건립국거체외간물질소화솔적NIRS정량분석모형적연구，채집료72개품충、불동기인형、불동생장발육시기적204개국거지상부분위양품，응용부리협변환근홍외만반사광보기술，통과채용불동적회귀산법，비교불동적광보범위화광보예처리방법，건립료8개국거체외간물질소화솔（IVDMD）적근홍외만반사광보교정모형，종중선출최가삼수적교정모형。기교정결정계수（R2cal）화외부험증결정계수（R2val）분별위0．95317화0．90455，교정표준차（RMSEC）화예측표준차（RMSEP）분별위1．97799％화2．00882％，예측치여화학치간적상관계수（r）체0．95108。결과표명，이용근홍외만반사광보법래측정국거체외간물질소화솔（IVDMD）시가행적，가위국거체외간물질소화솔（IVDMD）적측정제공쾌속적분석측정방법。
Chicory (Cichoriumintybus L.)is a new type of forage grasses of high yield and quality with a great value of popular-ization and utilization.In vitro dry matter digestibility (IVDMD)is one of the important indicators of the nutritional value of for-age evaluation.For the study of establishment of Chicory IVDMD NIRS quantitative analysis model,seventy-two species with different genotypes,different growth stages of 204 chicory samples of aboveground material were collected,and by Fourier transform near-infrared diffuse reflectance spectroscopy,through the use of different regression algorithms,can comparing dif-ferent spectral ranges and spectral pretreatment methods,eight chicory IVDMD NIRS calibration models were established,and the best calibration model parameters were chosen.Its calibration coefficient of determination (R2cal )and external validation coef-ficient of determination (R2val)were 0. 953 17 and 0. 904 55,calibration standard deviation (RMSEC)and predictive standard de-viation (RMSEP)was 1. 977 99%and 2. 008 82%,and the correlation coefficient (r)between predicted values and chemical val-ues was 0. 951 08.The results show that using NIRS to determine chicory IVDMD is feasible,and provided a rapid analysis method for the determination IVDMD of chicory.