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维生素E对皱纹盘鲍幼鲍生长、存活及体成分的影响
周歧存, 麦康森, 谭北平, 徐玮
青岛海洋大学水产学院 青岛266003
摘要:
于1997年5月在山东荣成石岛鲍珍品养殖场采集幼鲍,采用单因素实验方法进行幼鲍维生素E (VE)营养需要的研究。以酪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、200mg VE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。
关键词:  皱纹盘鲍  维生素E  营养需要
DOI:
分类号:
基金项目:国家自然科学基金资助项目,39670572号
THE EFFECTS OF VITAMIN E ON GROWTH, SURVIVAL AND CARCASS COMPOSITION OF JUVENILE ABALONE (HALIOTIS DISCUS HANNAI INO)
ZHOU Qi Cun, MAI Kang Sen, TAN Bei Ping, XU Wei
Fisheries College,Ocean University of Qingdao,Qingdao,266003
Abstract:
A 103-day feeding trial was conducted to determine the optimum dietary vitamin E level for the juvenile abalone (Haliotis discus hannai). A mixture of vitamin-free casein and gelatin (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, 200mg/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 level. Ash and calcium, phosphorus content of the shell were not affected by dietary vitamin E.
Key words:  Haliotis discus hannai, Vitamin E, Nutritional requirement
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