材料和方法一、试验饵料的饲喂及排泄物的收集本研究用不同类型和含量的精制类脂物或二者之一的饵料进行了三次饲养试验。一组日本对虾饲喂无类脂物的饵料,用以评估分泌于排泄物中的内生类脂物的含量。在试验1中,日本对虾吞食的饵料中含有0.5%的胆甾醇和0.8%的绿鳕肝油、乌贼肝油、豆 Materials and methods I. Feeding and excretion of test baits Three feeding experiments were conducted with different types and amounts of refined lipids or baits. A group of Japanese shrimp were fed a lipid-free diet to assess the amount of endogenous lipids secreted in the excrement. In Experiment 1, the feed consumed by Japanese shrimp contained 0.5% cholesterol and 0.8% cod liver oil, squid liver oil and beans