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日本东京水产大学、东京都水产试验场及淡水区水产研究所等单位,在阐明魟鳟亲鱼饲料的蛋白质、脂肪的最适添加量的同时,探讨了饲料中缺乏牛脂和必要脂肪酸(EFA)对个体和卵子质量产生的影响。实验用2龄的魟鳟鱼,从1977年8月到1978年1月,共饲养了五个月,在此期间,8月至11月的三个月投饵,此后至产卵前停喂。实验共分七个组,每组放养15尾鱼。第一至第三组用鱼粉,含量分别为48%、64%、80%的多孔质膨化饲料,此外,分别添加肝油20%、14%、9%。第四组的鱼粉含量为63%,
Japan’s Tokyo Fisheries University, Tokyo Aquatic Testing Center and Freshwater Fisheries Research Institute and other units, to clarify the optimum dietary protein and fat Adipose feeding, at the same time, discusses the lack of feed fat and essential fatty acids (EFA) pairs Effects of individual and egg quality. Two-month-old trout were housed for five months from August 1977 to January 1978, during which time they were fed three months from August to November and were then de-toasted before spawning . The experiment is divided into seven groups, each stocking 15 fish. The first to the third group with fish meal, respectively, the content of 48%, 64%, 80% porous puffed feed, respectively, in addition, were added liver oil 20%, 14%, 9%. The fourth group of fish meal content of 63%