生产单位一般将用作对虾开口饲料的卤虫无节幼体用开水烫死,然后加入海水,使幼体沉底、卵壳上浮而使二者分离。这种方法的缺点是卤虫幼体全被烫死,体内卵黄变性,并有一部分营养物质析出流失。笔者近年来利用盐度差变化的方法,将卤虫无节幼体与卵壳分离,取得了较好效果,现介绍如下。首先将孵化好的卤虫池停气约半个小时, Production units will generally be used for feed shrimp hatch Artemia nauplii boil with boiling water, and then add seawater so that larvae sink, leaving the egg shell separation between the two. The disadvantage of this method is that Artemia larvae are completely burned, the body yolk degeneration, and part of the loss of nutrients precipitation. In recent years, the author uses the salinity difference variation method, the Artemia nauplii and eggshell separation, and achieved good results, are presented below. First hatched brine shrimp pond stopped for about half an hour,