挪威的紫贻贝年产量约为1000立方吨,但未能达到商品规格(5厘米)的小贻贝占总产量的30～50%。为充分利用这一部分副产品,挪威农业研究委员会水产养殖研究所在虹鳟饲料中添加15%、30%、45%的紫贻贝进行试验,试验鱼平均体重240克,试验期为9周。化学分析表明:紫贻贝肉是良好的饲料蛋白源,其脂肪酸组成也适宜虹鳟生长,但灰分含 The annual production of purple mussels in Norway is about 1,000 cubic tons, but the small mussels that fail to meet the commodity specification (5 cm) account for 30 to 50% of the total output. In order to make full use of this by-product, the Norwegian Agricultural Research Council Aquaculture Research Institute adds 15%, 30% and 45% of mussels to rainbow trout feed. The average weight of the test fish is 240 g for a test period of 9 weeks. Chemical analysis showed that purple mussel meat is a good feed protein source, its fatty acid composition is also suitable for rainbow trout growth, but the ash content