微量元素铬在动物上的研究与应用

铬是动物的必需微量元素之一,是葡萄糖耐量因子的重要活性组成成分,铬通过葡萄糖耐量因子(GTF)协同胰岛素的作用,影响碳水化合物、脂类、蛋白质和核酸代谢,进而影响动物的生长、免疫、繁殖和胴体品质,降低应激,改善机体免疫机能,提高畜禽生产性能和繁殖力。动物体内铬的研究已经取得了一定的进展,并且在动物上的应用也已经得到了实践证实。本文通过对铬的理化特性、铬在动物体内的吸收、运输、贮存和排泄、铬的生物学功能以及铬在动物生产性能上的作用、铬的需要量等方面进行了综合阐述,指出其广阔的应用前景及发展方向。收稿日期:2002-05-27基金项目:山西省归国留学基金项目(99044)作者简介:乔富强(1974-),男,山西农业大学动物科技学院在读硕士,主要从事动物营养与饲料科学的研究工作。

Researches and Uses of Trace Element Chromium on Animals

Chromium is a necessary trace element for animals. It is an important component of GTF and plays a role with insulin in the metabolism of sugar, fat, protein and nucleic acid. It even affects the animals' growth, immunization, breeding and carcass character. Chromium can decrease the stress, improve the immunizing mechanism, enhance the production and breeding performance. The study on Chromium has made great progress and its uses have been proved in practice. In this article, we introduced its physical and chemical character, how to be absorbed, transported,stored and excreted from the body. This is also a summary on the biological function, the improving production character,the demand and so on. We raised its bright prospects and developments.