| 摘要: |
| 关于高等动物消化酶对食物组成的适应，很多学者己做了不少研究工作，如Ben Abdeljlil等对哺乳动物，川合真一郎等对鱼类的研究。但在甲壳动物方面，以往研究得较少。对虾具有消化蛋白质和淀粉的酶类，因此可在对虾饵料中加进含蛋白质和淀粉丰富的物质。如果饵料中这两种物质的含量增加，对虾肝胰脏蛋白酶和淀粉酶的分泌量也随着增加，即谓有适应，饵料中的蛋白质和淀粉便可被很好地消化、吸收和利用；相反，如果没有适应或适应程度低，在饵料中加进过多的蛋白质或淀粉将造成浪费。本文对中国对虾Penaeus orientalis的蛋白酶和淀粉酶对饵料中蛋白质和淀粉含量的适应及其适应程度和速度进行了研究。 |
| 关键词: 对虾 消化酶 |
| DOI： |
| 分类号: |
| 基金项目:中国科学院海洋研究所调查研究报告第1159号 |
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| STUDIES ON THE DIGESTIVE ENZYMES OF THE PRAWN PENAEUS ORJENTALIS Ⅱ. THE ADAPTATION OF THE DIGESTIVE ENZYMES TO DIET COMPOSITION |
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Yu Shukun
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Institute of Oceanology, Academia Sinica
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| Abstract: |
| The activities of proteinase and amylase can be affected by and can respond to the diet the prawn fed in about 5-8 days. The ratio of specific activity of proteinase to that of amylase is directly proportional to the protein content and inversely proportional to the starch content in the diet.
The activities of proteinase and amylase of the prawn fed with a diet containing more protein and less starch (fresh fishes 20%, fish meal 80%) are greater than those of the prawn fed with diets containing less protein and more starch (sweet potato flour over 20%) when six diets were used with different fish meal and sweet potato flour ratio in the culture of the prawn. |
| Key words: DIGESTIVE ENZYMES PRAWN PENAEUS ORIENTALIS |
