益生素添加剂的作用机理

添加益生素可以改善肠道微生态环境，增强动物免疫机能，促进代谢及防治疾病等许多作用；同时由于其无残留，不产生耐药菌株等特点，已成为目前发展很快，很有前途的一种新型饲料添加剂。本文就益生素的分类，作用机理及使用中应注意的问题等方面作一简述。

The Additive of the Probioticand Its Mechanism

The additive of the probiotic can improve the environment of microbial flora in intestinal canal,enhance the immunity,improve the metabolism and prevent and cure animal disease.Meanwhile,because it has no remnant and bacteria causd by using other antibiotics,the additive of the probiotic has become a new-type feed additive having a good prospective.The taractate introduces concisely the classification,mechanism and problems we should pay attention to in use of the probiotic.