维生素E对皱纹盘鲍幼鲍生长、存活及体成分的影响

于1997年5月在山东荣成石岛鲍珍品养殖场采集幼鲍，采用单因素试验方法进行幼鲍维生素E(VE）营养需要的研究。以酷蛋白和明胶为蛋白源，通过用不同浓度VE的饲料（E1－E7七个实验组），即在每100g饲料中分别添加0、5、10、20、50、100、200mgVE来饲喂幼鲍（平均体重为220－240mg)103天。结果表明，饲料中适量的VE具有促进幼鲍生长的作用；幼鲍软体部水分和脂肪含量不受饲料中VE添加水平的影响，然而饲料中VE添加水平显著影响软体部蛋白质含量；贝壳中灰分和钙、磷含量不受VE添加水平的影响。以增重和蛋白质增量为指标，皱纹盘鲍幼鲍饲料中VE的适宜含量为5－10mg/100g饲料。

THE EFFECTS OF VITAMIN E ON GROWTH, SURVIVAL AND CARCASS COMPOSITION OF JUVENILE ABALONE (HALIOTIS DISCUS HANNAI INO)

A 103-day feeding trial was conducted to determine the optimtm dietary vitamin E level for the juvenile abalone (Haliotis discus hannai ). A mixture of vitamin-free casein and gdatin (5:1) was used as the protein source, and seven purified diets were formulated to provide graded vitamin E levels (0,5,10,20,50,100,200rng/100g diet ). On the basis of weight and protein gain, the optimum vitamin E level was estimated to be 5—10mg per 100g diet. Juvenile abalone exhibited significantly weight gain associated with the optimal level; deficient or excessive dietary vitamin E resulted in lower gains of weight and shell length. Although no significant difference was observed between different groups, the survival rate increased with an increasing vitamin E level. The lowest lipid and moisture content of soft body occurred when the dietary vitamin E level was optimal, while no significant differences were found in lipid and moisture. Protein content of soft body was markedly affected by vitamin E level; protein gain varied with dietary vitamin E level and attained the highest with the optimal vitamin E levd. Ash and caldum,phosphorus content of the shell were not affected by dietary vitamin E.