硒(Se)作为水产动物必需的微量元素之一,对机体有多种生理功能(如免疫、生长发育、繁殖等),并能在体内产生富集。在饲料中添加硒会对水产动物产生一定的影响。硒摄入过量或不足,都会对机体产生危害,只有适量地摄入硒才能保证水产动物的健康生长,增强其抗氧化能力和自身免疫力。硒最重要的功能是通过谷胱甘肽过氧化物酶(GSH-Px)发挥抗氧化性,在还原型谷胱甘 Selenium (Se), one of the trace elements essential for aquatic animals, has a variety of physiological functions (such as immunity, growth and reproduction, etc.) on the body and can generate enrichment in the body. Add selenium in feed will have a certain impact on aquatic animals. Selenium intake of too much or too little, will have a harm to the body, only adequate intake of selenium to ensure the healthy growth of aquatic animals, enhance its antioxidant capacity and immunity. The most important function of selenium is to exert its antioxidant activity through glutathione peroxidase (GSH-Px). In reducing glutathione