碩士 / 國立高雄海洋科技大學 / 水產養殖研究所 / 102 / This study assessed the influence of adding commercially available nucleotides and various ratios of soybean meal to replace fishmeal as feed on the growth rates and survival of Lates calcarifer. The experiment involved 6 groups, which included fish that were fed basic feed, feed that comprised soybean meal that replaced 40% or 80% of fishmeal, feed that was supplemented with commercially available nucleotide 0.2% Vannagen, 0.1% Vannagen, or 0.05% Nutrafito Plus, or generic, commercially available sea bass feed. The addition of appropriate nucleotide amounts was expected to reduce the amount of fishmeal necessary, thereby lowering feed costs. The results indicated that the addition of soybean meal and commercially available nucleotides did not substantially increase the rates of specific growth and weight gain. However, the superoxide dismutase immunoreactivity was higher in the feed that included commercially available nucleotides than those that did not (p <0 .05). This result showed that the fish that were given feed supplemented with nucleotides demonstrated an improved ability to remove free radicals, thereby enhancing the immunoreactivity and increasing the survival rate of sea bass. Numerous studies have indicated that adding nucleotide to feed can elevate the immunoreactivity of fishery products, and this study presented similar results. Among the feeds used in the experiment, the costs of the feeds without nucleotides were the lowest. However, because the prices of fishmeal are increasing, adding nucleotides to feeds can reduce costs in the future. Nevertheless, the appropriate amount of nucleotides to be added must be further verified by conducting further experiments.
| Identifer | oai:union.ndltd.org:TW/102NKIM0086005 |
| Date | January 2014 |
| Creators | Song Wei, 宋瑋 |
| Contributors | Tah-Wei Chu, 瞿大維 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 98 |
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