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采用四因子三水平的正交实验法,研究了河蟹蚤状幼体至大眼幼体阶段对饲料中蛋白质、脂肪、矿物盐及复合维生素的适宜需求量。结果表明,影响河蟹其成活率的因素主次顺序为:蛋白质>维生素>矿物盐>脂肪,其最优水平分别为:蛋白质55.28%;维生素2%;矿物盐6%;脂肪17.39%。
The optimum level of protein, fat, mineral salt and multivitamin in feed was studied by orthogonal experiment with four factors and three levels. The results showed that the order of the main factors affecting the survival rate of crabs was protein> vitamins> mineral salts> fat. The optimum levels were 55.28% of protein, 2% of vitamins, 6% of mineral salts and 17.39% of fat.