碩士 / 國立臺灣海洋大學 / 食品科學系 / 92 / Abstract
This study was conducted to elucidate the effects of lactoferrin (LF) on growth and immune responses in juvenile grass shrimp, Penaeus monodon. Basal diet supplemented with seven levels (0, 100, 300, 700, 1,000, 2,000, 5,000 mg/kg diet) of LF were each fed to triplicate groups of shrimp (initial weight 0.15 ± 0.01 g) for 8 weeks. Shrimp fed diets supplemented with ≧ 2,000 mg LF/kg had significantly (P＜ 0.05) higher weight gain than shrimp fed diets with ≦ 700 mg LF/kg. Feed efficiency and protein efficiency ratio were highest in shrimp fed diet with 2,000 mg LF/kg, followed by shrimp fed diet with 5,000 mg LF/mg, and lowest in shrimp fed diets with ≦ 700 mg LF/kg. Higher muscle iron concentration was observed in shrimp fed diet with 1,000 mg LF/kg than shrimp fed diets with ≦ 300 and 5,000 mg LF/kg. Total haemocyte count was higher in shrimp fed diets supplemented with 700 - 2,000 mg LF/kg than shrimp fed diets supplemented with ≦ 100 mg LF/kg. Intracellular superoxide anion production ratio were higher in shrimp fed diets with 300 - 2,000 mg LF/kg than shrimp fed diets with 100 and 5,000 mg LF/kg. The phenoloxidase activity and superoxide dismutase activity were higher in shrimp fed diets with ≧ 300 mg LF/kg than shrimp fed the unsupplemented control diet. These results suggest that the dietary LF concentrations for better growth and immune responses in P. monodon are 2,000 mg LF/kg and 700 - 2,000 mg LF/kg, respectively
| Identifer | oai:union.ndltd.org:TW/092NTOU5253017 |
| Date | January 2004 |
| Creators | Shan-Ju Tai, 戴珊如 |
| Contributors | Shi-Yen Shiau, 蕭錫延 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 61 |
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