碩士 / 國立臺灣海洋大學 / 水產養殖學系 / 101 / An experiment was conducted to determine the combined dietary effects of cholesterol (CHL) and NUTRAFITO Plus (NP), a mix of plant extracts containing mainly saponin, on Pacific white shrimp Litopenaeus vannamei. A two-factor factorial design was used consisting of four cholesterol levels (0.00%, 0.05%, 0.10% and 0.15% of diet) and three NP levels (0.00%, 0.05% and 0.1% of diet), the experiment was carried out for 3 months. The results indicated that diets supplemented with either CHL and/or NP significantly improved shrimp survival (SUR), weight gain (WG), specific growth rate (SGR), average body weight (ABW), and food conversion ratio (FCR). There was a highly significant interaction between CHL and NP on SUR, WG, SGR, ABW and FCR. The dietary cholesterol level to achieve significant shrimp growth was 0.10%, while that for NP was 0.10%.
Shrimp fed diets supplemented with CHL had no significant effects on immune capacity of total haemocyte count (THC), superoxide dismutase (SOD), total antioxidant (TAS), glutathione peroxidase (GPx), glutathione reductase (GR), alanine aminotransferase (ALT) and, aspartate aminotransferase (AST). However, supplement of 0.10% NP has significantly improved shrimp’s THC, SOD and TAS, but not other parameters.
When increasing CHL content in diet, total lipid content of shrimp body (LB) decreased, but no different was found in total cholesterol of shrimp body (CB), and total lipid (LH) or cholesterol (CH) of hepatopancreas was fluctuated. Increased supplementation of NP resulted in increasing in LH, CB and CH but not in LB. The concentration of cholesterol serum (SC) was not affected.
NP was beneficial as a feed supplement in the white shrimp, which could replace cholesterol partially or totally in diet as well as reduce the cost of feed.
| Identifer | oai:union.ndltd.org:TW/101NTOU5086021 |
| Date | January 2013 |
| Creators | Ling Ee Ying, 林以應 |
| Contributors | Yew-Hu Chien, 陳瑤湖 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | en_US |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 65 |
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