碩士 / 國立海洋大學 / 食品科學系碩士在職專班 / 90 / The study was conducted to determine the optimum dietary copper requirement of juvenile hybrid tilapia (Oreochromis niloticus ×O. aureus). Purified diets with 8 graded levels (0, 1, 2, 3, 4, 8, 12 and 20 mg/kg diet) of supplemented CuSO4 were fed to tilapia (mean body weigh 0.79 ± 0.03g) for 8 weeks. Each diet was fed to triplicate groups of fish. Results indicated that tilapia fed diet supplemented with 2 mg Cu/kg diet had significantly (P<0.05) higher weight gain (WG), feed efficiency (FE) and protein efficiency ratio (PER) than fish fed 20 mg Cu/kg diet. No differences in survival were observed in fish fed the different diets. Fish fed diet supplemented with 2 mg Cu/kg diet had higher hemoglobin concentration (Hb) and hematocrit (Hct) than fish fed 0 , 3, 4, 8, 12 and 20 mg Cu/kg diets. Both hepatic and whole body copper concentration increased with increasing dietary copper level. Fish fed 1 mg Cu/kg diet had higher plasma ceruloplasmin (Cp) than fish fed 0 and ≧ 2 mg Cu/kg diets. Analysis by broken-line regression of the weight gain and by linear regression of whole body copper retention of fish indicated that the optimum dietary Cu concentration in juvenile tilapia is approximately 3.5- 4.0 mg/kg diet.
| Identifer | oai:union.ndltd.org:TW/090NTOU1253006 |
| Date | January 2001 |
| Creators | Yeh-Chen Ning, 倪燕貞 |
| Contributors | Shi-Yen Shiau, Ph.D., 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 | 66 |
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