Fresh duckweed (Wolffia arrhiza) as a replacement for formulated feed for nursing Nile tilapia (Oreochromis niloticus) fry | |
| Author | Nguyen Thi Thu |
| Call Number | AIT Thesis no. AE-92-57 |
| Subject(s) | Nile tilapia fry Fishes--Feeding and feeds |
| Note | A thesis submitted in partial fulfillment of the requirement for the degree of Master of Sciencet |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. AE-92-57 |
| Abstract | Nile tilapia fry from 11 , 21 and 31 days after first feeding were stocked at a density of 3 fish/l in 18 jars filled with 14 1 of tap water. They were fed artificial feed containing 40.6% crude protein at 10%, 15% , 20%, 25% , 30% and 35% daily (dry weight basis) of total biomass of fish per jar (wet weight basis ) . Growth rate and feed utilization efficiencies of fish showed optimum feeding rates of 25%, 20% , 15% for fish from 11, 21, and 31 days after first feeding , respectively. Formulated feed as a control diet was replaced by Wolffia arrhiza at levels of 0% , 25% , 50%, 75% , 100% of the diet and fed to Nile tilapia fry from 11 , 21 and 31 days after first feeding at 25%, 20% and 15% of total biomass of fish, respectively. Fresh W. arrhiza was a suitable component for the diet of tilapia fry. Growth of fish increased and food conversion ratio improved and the level of Wolffia in the diet also increased the survival rate of fish. |
| Year | 1992 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. AE-92-57 |
| 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 | Agricultural and Food Engineering (AE) |
| Chairperson(s) | Edwards, Peter |
| Examination Committee(s) | Amararatne Yakupitiyage;Little, David |
| Scholarship Donor(s) | The Government of New Zealand |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 1992 |