Effects of high levels of vitamin C, E and Zinc on reproductive performance of nile tilapia (Oreochromis niloticus L.) | |
| Author | Kaneshalingam, Suthajini |
| Call Number | AIT Thesis no.AQ-04-21 |
| Subject(s) | Nile tilapia--Reproduction Vitamin C in animal nutrition Vitamin E in animal nutrition Zinc |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. AQ-04-21 |
| Abstract | A randomized block 2x2x2 factorial design experiment was conducted to evaluate the effect of higher dietary levels of vitamin C, vitamin E and mineral zinc and their possible combinations on Oreochromis niloticus growth performance, survival rate and reproductive performance. Experiment was done in hapas installed in ponds and tanks with water recirculation facility. A basal diet was prepared to contain 250 mg kg"1 vitamin C, 300 mg kg·1 vitamin E and 200 mg kg·1 Zn. Seven experimental diets were formulated by fortifying basal diet to contain 1000 mg kg·1 vitamin C, 1200 mg kg·1 vitamin E, 800 mg kg·1 Zn, 1000 mg kg·1 vitamin C plus 1200 mg kg·1 vitamin E, 1000 mg kg·1 vitamin C plus 800 mg kg·1 Zn, 1200 mg kg" 1 vitamin E plus 800 mg kg" 1 Zn, and 1000 mg kg·1 vitamin C plus 1200 mg kg·1 vitamin E plus 800 mg kg·1 Zn. Experiment was done with three replicates. Results showed that growth performance and Gonado-somatic index of male and female were not affected by dietary treatments. Fertilization rate of eggs were significantly higher in females fed with excess vitamin C, E, C plus Zn, E plus Zn, and C plus E plus Zn diets. But there was a negative interaction effect fed with combination of vitamin C and E to the fertilization rate. Total number of eggs, spawning frequency, means number of eggs per female, hatching rate and survival of yolk sac larvae were not affected by experimental treatments. Sperm quality parameters such as motility, concentration and percentage of males with running milt were not significantly affected due to high levels of vitamin C,EandZn. Present findings suggest that excess dietary vitamin C, E and Zn have no effect on growth performance. But they improve the fertilization rate of eggs over the basal diet. |
| Year | 2004 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. AQ-04-21 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Department of Food, Agriculture and Natural Resources (Former title: Department of Food Agriculture, and BioResources (DFAB)) |
| Academic Program/FoS | Aquaculture and Aquatic Resources Management (AQ) |
| Chairperson(s) | Amararatne Yakupitiyage.; |
| Examination Committee(s) | Bart, Amrit;Gabaudan, Jacques;Yi, Yang; |
| Scholarship Donor(s) | The Royal Netherlands Government;AIT Fellowship; |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 2004 |