DDGS饲料不研磨建立近红外模型的探索

Exploration of Establishing Near-Infrared Model of DDGS Feed without Grinding

摘要: 利用近红外分析技术，采用偏最小二乘(PLS)回归方法，分别对光谱进行附加散射校正，变量标准化，一阶导数及二阶导数处理，建立了饲料中某些成分的近红外模型。通过近红外模型数据与其对应的化学值相对比，制定了对于筛孔粒径为1.7mm或2.0mm时，而且饲料中脂肪球较少或不含脂肪球的情况下，可以不研磨样品，准确测定饲料中的相关项目。

Abstract: Using near-infrared analysis technology and partial least squares (PLS) regression method, the spectrum is subjected to additional scattering correction, variable normalization, first and second derivative processing, and a near-infrared model of certain ingredients in the feed was established. By comparing the near-infrared model data with its corresponding chemical value, it is formulated that when the particle size of the sieve is 1.7mm or 2.0mm, and there are few or no fat globules in the feed, the sample may not be ground, which is accurate determination of related items in feed.