近红外光谱法估测饲料用裸大麦品质的应用研究

应用近红外光谱分析法(NIRS)估测饲料用裸大麦中粗蛋白质、粗纤维、粗灰分、水分的含量与化学万法之间相关性高,误差小。42份样品定标结果,复合相关系数(MR)分别为0.9762、0.7826、0.6158、0.9408,标准误误(SE)为0.3210、0.1930、0.3140、0.1520,22份裸大麦样品检验结果,相关系数(r)分别为0.933、0.397、0.409、0.762,估测标准误(SEP)为0.421、0.197、0.157、0.512;估测13种氨基酸含量,除色氨酸和胱氨酸外,相关系数均在0.9以上,变异系数(C.V.)均小于6%。说明采用NIRS方法测定裸大麦的粗蛋白、粗纤维、粗灰分、水分以及氨基酸含量不仅可行,而且具有快速、简便、低耗、准确等优点。

APPLICATION OF NEAR INFRARED REFLECTANCE SPECTROPHOTOMETER (NIRS) FOR APPRAISING QUALITY OF THE BARE BARLEY USED FOR FEEDSTUFFS

There was a high correlation between the NIRS method and the Chemical for the measurement in appraising of the quality of bare barley used for feedstuffs,The standard error was little,The results of tesgion 42 samples showed that multiple correlation and variation cofficents of quality indexes between Chemical analysis and NIRS were 0.9762,0.7826,0.6158,0.9408 respectively,standard error were 0.3210,0.1930,0.3140,0.1520;Results of testing 22 samples of the bare barley showed that the correlation indexes were 0.933,0.397,0.409,0.762 respectively,The results of evaluation for l3 amino acids contents showed that their correlation coefficient were all more than 0.9,C,V,were all less than 6% except that of TRY CYS,Suggesting that not only the NIRS method applied for monitoring crude protein,crude fiber,crude ash,moisture contents and amino acids is practical,but also has many advantages such as fast,simple,low-cost and accurate.