碩士 / 國立海洋大學 / 水產養殖學系 / 91 / Three experiments were conducted to investigate the effects of quality and quantity of protein and protein to energy ratio on the weight gain、survival and body compositions of juvenile white leg shrimp, Litopenaeus vannamei. In the first experiment, triplicate groups of white leg shrimp were treated with two salinities (1ppt and 35ppt) and fed isocaloric diets with three protein levels(20%、30% and 40%). Fish meal was used as a protein source. The experimental duration was 42 days. White shrimp fed diets containing 30% and 40% protein had the significantly higher weight gain than those fed diet containing 20% protein under low or high salinity environment. White shrimp cultured in high salinity (35 ppt) water had significantly higher weight gain than those cultured in low salinity (1 ppt) environment.
In the second experiment, fish meal、shrimp meal、squid meal、casein、isolated soy protein and soybean meal were used as protein sources to formulate six isonitrogenous diets. The diet containing shrimp meal had the highest EAAI (0.953), and diet containing casein had the lowest EAAI(0.882). The weight gain of white leg shrimps fed six diets containing fish meal, casein, shrimp meal, isolated soy protein, squid meal and soybean meal were 989、875、837、793、739 and 591%, respectively.
The dietary protein/energy ratio of white shrimp was evaluated in experiment III. Fish meal used was as a protein source and dietary energy contents were adjusted by lipid and corn starch. Diets were designed to contain three protein levels (25、30 and 35%) with three P/E ratios (104、94 and 84 mg protein/kcal). The experimental duration was 63 days. The white leg shrimps fed diets containing P/E 84 mg protein/kcal had the significantly higher weight gain than those fed other P/E level treatments, irrespective of protein levels. The white leg shrimps fed diets containing 35% protein had the significantly higher weight gain than other treatments.
| Identifer | oai:union.ndltd.org:TW/091NTOU0086035 |
| Date | January 2003 |
| Creators | shu-ping Huang, 黃淑萍 |
| Contributors | 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 | 65 |
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