A feeding method suitable for rearing octopuses was investigated by preparing basic feed (ground crab or squid meat) enclosed within a collagen casing. Growth was compared between basic feed sealed in the casing and feed provided without a casing. No difference in growth was observed when the feed was squid, but with crab meat, both feeding efficiency and weight gain rate tended to be improved by encasement. When feeding on encased feed, octopuses were observed to feed not only by consuming the entire casing membrane, but also by eating only the edible portion inside the casing. Feed that was about to be eaten by octopuses was collected and measured for the enzyme activity associated with the feed, detecting protease activity, which is considered to be derived from the posterior salivary glands. It was concluded that encasement of feed in a collagen membrane not only improves the retention of soft feed materials within the membrane, but also suppresses the dispersal of enzymes when the octopus feeds, thus enabling the octopus to feed more efficiently.

通过制备封装在胶原蛋白肠衣中的基础饲料（碎蟹或鱿鱼肉），研究了适合饲养章鱼的喂养方法。比较密封在肠衣中的基础饲料和没有肠衣的饲料之间的生长情况。当饲料为鱿鱼时，没有观察到生长差异，但使用蟹肉时，饲喂效率和增重率往往通过装箱而提高。当以包裹的饲料为食时，观察到章鱼不仅会吃掉整个肠衣膜，而且还会只吃肠衣内的可食用部分。收集章鱼即将吃掉的饲料并测量与饲料相关的酶活性，检测蛋白酶活性，该活性被认为来自后唾液腺。结果表明，将饲料包裹在胶原膜中不仅可以提高软饲料材料在膜内的保留，而且可以抑制章鱼进食时酶的扩散，从而使章鱼更有效地进食。