碩士 / 國立海洋大學 / 水產養殖學系 / 88 / Two experiments were conducted to investigate the effects of lipid levels and sources on the weight gain and proximate analysis of soft body and viscera and fatty acid compositions of two different size abalone, Haliotis diversicolor. Seven isonitrogenous purified diets (33.5% CP) contained graded lipid levels, 0、1.5、3.0、4.5、6.0、7.5 and 9.0%, in the form of a mixture of 2:1 cod liver oil / corn oil. The red algae, Gracilaria sp, was used as a control diet. Small Taiwan abalone fed diets containing 1.5、3.0 and 4.5% lipid and control diet had significantly higher weight gain than those fed the other diets. Large Taiwan abalone fed diet containing 4.5% lipid and control diet had significantly higher weight gain than those fed the other diets. Survival of small and large Taiwan abalone fed treatment diets were 100% and 93~100%, respectively. Based on percentage weight gain data using broken-line analysis, the optimal dietary lipid for small and large Taiwan abalone were found to be approximately 1.07 and 2.64%, respectively. The lipid content of viscera of both size abalone increase with increasing dietary lipid. Saturated fatty acid, 13:0, is the most abundant fatty acid of soft tissue.
The effects of seven lipid sources (beef tallow、soybean oil、olive oil、linseed oil、sesame oil、corn oil and cod liver oil) on the growth and fatty acid composition of soft body and viscera of abalone were investigated in experimentⅡ. All diets were formulated to containe a total of 3.0% lipid. Also, Gracilaria sp was used as a control diet. After feeding trails of 90 days duration, Taiwan abalone fed diet containing beef tallow had significantly lower weight gain than those fed the other treatment diets. Survival of Taiwan abalone fed treatment groups were 100%. The major fatty acids of soft tissue of abalone fed treatment diets were 13:0、16:0、18:1n-9、18:2n-6 and 20:4n-6. Abalone fed diets containing linseed oil and cod liver oil had high level of 20:5n-3 and 22:5n-3 in both soft tissue and viscera. Compared the fatty acid profile of marine animals Taiwan abalone contained high level of 20:4n-6 and 22:5n-3.
| Identifer | oai:union.ndltd.org:TW/088NTOU0086014 |
| Date | January 2000 |
| Creators | Yi-Theng Tseng, 曾義盛 |
| 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 | 0 |
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