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在水产养殖中 ,一般来说饲料成本约占总成本的４０%～６０ % ,因此提高饲料转化效率 ,降低成本 ,就必须在鱼类营养学和饲料工艺学等方面进行研究 ,提高科技含量。鱼用配合饲料的起步落后于畜禽配合饲料。美国在２０世纪５０年代开始研究鲑鳟鱼类的营养后 ,才推动了有关的配合饲
In aquaculture, the cost of feed is generally about 40% -60% of the total cost. Therefore, to improve feed conversion efficiency and reduce costs, it is necessary to conduct research in fish nutrition and feed technology to improve the technological content. Starting with the feed of fish lags behind with livestock and poultry feed. After the United States started to study the nutrition of salmon trout in the 1950s, it promoted the related mating