碩士 / 國立臺灣海洋大學 / 水產養殖學系 / 94 / Abstract
The purpose of this study was conducted to investigate the effects of different protein source, concentration and ratio on the somatic growth and gonad growth of purple sea urchin (Anthocidaris crassispina). There were three experiments for this study. Gracilaia sp. Were used as a control diet. Fish meal, soybean meal, isolated soya protein, corn meal and rice bran were used as the protein sources to formulate isonitrogenous(25%) and isoenergetic(395 kcal) diets for experiment Ⅰ. EAAI value was used to estimate whether the amino acid composition of fulfills the need of purple sea urchin. The results showed that EAAI of Gracilaia sp. was the highest (0.919), and that of diet containing corn meal was the lowest (0.853). The weight gain was high in sea urchin fed Gracilaia sp., intermediate in sea urchin fed corn meal, isolated soya protein, rice bran, fish meal, and the low in sea urchin fed diet containing soybean meal. The gonad somatic index was high in sea urchin fed isolated soya protein, intermediate in sea
urchin fed fish meal, corn meal, rice bran, soybean meal, and the low in sea urchin fed Gracilaia sp..
Isolated soya protein was used as the protein source top formulate diets with five protein levels (5%、15%、25%、35%、45%) diets of experiment Ⅱ. The experimental duration was 60 days. The weight gain was high in purple sea urchin fed the diet containing 25% protein, intermediate 35%, 45%,and 15% and the lowest in sea urchin fed diet containing 5% protein. The gonad somatic index was high in sea urchin fed diet containing 35% protein,intermediate in sea urchin fed 25%, 45% and 15% and the lowest in sea urchin fed diet containing 5% protein.
Isolated soya protein and fish meal were used as the protein sources formulate to diets with five protein ratios(isolated soya protein : fish meal; 4:0、3:1、1:1、1:3、0:4）diets of experiment Ⅲ. EAAI value was used to estimate whether the amino acid composition of fulfills the need of purple sea urchin. The results showed that EAAI of diet 1:3 (isolated soya protein :fish meal) was the highest (0.0.907), and that of diet 0:4(isolated soya protein : (fish meal )was the lowest (0.853). The experimental duration was 60 days. The weight gain was high in sea urchin fed 1:1 (isolated:soya protein : fish meal ) diet and the low in sea urchin fed diet 0:4 (isolated soya protein : fish meal ). The gonad somatic index was high in sea urchin fed 4:0 (isolated soya protein : fish meal ) diet and the low in sea urchin fed 0:4 (isolated soya protein : fish meal ) diet.
| Identifer | oai:union.ndltd.org:TW/094NTOU5086007 |
| Date | January 2006 |
| Creators | Wei-Yu Sun, 孫瑋育 |
| Contributors | Shyn-Shin Sheen, 沈士新 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 79 |
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