| 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 |
附件 |
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| THE EFFECTS OF VITAMIN E ON GROWTH, SURVIVAL AND CARCASS COMPOSITION OF JUVENILE ABALONE (HALIOTIS DISCUS HANNAI INO) |
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ZHOU Qi Cun, MAI Kang Sen, TAN Bei Ping, XU Wei
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Fisheries College,Ocean University of Qingdao,Qingdao,266003
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| 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 |
