泌阳县肉牛养殖常用饲料原料中微量元素及重金属含量分析

Analysis of Trace Elements and Heavy Metal Content in Commonly Used Feed-stuffs of Beef Cattle in Biyang

[目的]饲料原料中微量元素和重金属的含量对肉牛的生长发育及生态环境均有重要影响,通过对肉牛养殖中常用饲料原料中的微量元素及重金属含量进行分析,为肉牛养殖提供参考。[方法]研究对泌阳县境内24份肉牛养殖常用的饲料原料样品进行分析,采用硼氢化钾还原原子荧光光谱法测定了饲料原料中4种微量元素(铜、铁、锌、硒)及2种重金属(砷、铅)的含量。[结果]结果表明,泌阳县肉牛养殖常用的饲料原料中微量元素铁、锌、硒的含量存在超标现象,尤其是在花生秧中含量较高;在大多数饲料原料中,重金属砷和铅未检出或含量在允许范围内。[结论]泌阳县肉牛养殖饲料原料中微量元素含量超标现象较多,重金属污染较小。

[Objective] The contents of trace elements and heavy metals in feed-stuffs not only affect the growth and development of beef cattle, but also bring about great threat to environmental safety. Analysis of the contents of trace elements and heavy metals of beef cattle used feed-stuff will provide reference for beef cattle breeding. [Methods] In the present study, 23 samples of commonly used feed-stuffs in beef cattle breeding were investigated, the contents of four kinds of trace elements(Cu, Fe, Zn and Se) and two kinds of heavy metals(AS and Pb) were measured by using KBH;reduction atomic fluorescence spectrometry. [Results] The results showed that the contents of trace elements(Fe, Zn, Se) in examined feed-stuffs exceeded the national standard, especially the high content of Fe in peanut seedlings;In most samples of the examined feed-stuffs, AS and Pb were not detected or the content was within the national standard. [Conclusion] Our results indicated a common phenomenon of trace elements exceeding in feed-stuff and a mild heavy metal pollution of commonly used feed-stuffs in beef cattle feeding in Biyang county.