Full Text Available
Note: Clicking the button above will open the full text document at the original institutional repository in a new window.
An investigation of the survival level of Oreochromis mossambicus fry variably kept in a closed system : laboratory experiment
Thesis (MPhil (Animal Sciences. Aquaculture))--University of Stellenbosch, 2005.
Saved in:
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | Thesis |
| Language: | English |
| Published: |
Stellenbosch : University of Stellenbosch
2008
|
| Subjects: | |
| Tags: |
No Tags, Be the first to tag this record!
|
| _version_ | 1867613742101954560 |
|---|---|
| access_status_str | Open Access |
| author | Asgodom, Mihretu T. |
| author2 | De Wet, Lourens |
| author_browse | Asgodom, Mihretu T. De Wet, Lourens |
| author_facet | De Wet, Lourens Asgodom, Mihretu T. |
| author_sort | Asgodom, Mihretu T. |
| collection | Thesis |
| dc_rights_str_mv | University of Stellenbosch |
| description | Thesis (MPhil (Animal Sciences. Aquaculture))--University of Stellenbosch, 2005. |
| format | Thesis |
| id | oai:scholar.sun.ac.za:10019.1/3381 |
| institution | Stellenbosch University (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:40:58.715Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from SUNScholar — Stellenbosch University Repository |
| publishDate | 2008 |
| publishDateRange | 2008 |
| publishDateSort | 2008 |
| publisher | Stellenbosch : University of Stellenbosch |
| publisherStr | Stellenbosch : University of Stellenbosch |
| record_format | dspace |
| source_str | SUNScholar — Stellenbosch University Repository |
| spelling | oai:scholar.sun.ac.za:10019.1/3381 An investigation of the survival level of Oreochromis mossambicus fry variably kept in a closed system : laboratory experiment Asgodom, Mihretu T. De Wet, Lourens Brink, Danie University of Stellenbosch. Faculty of Agrisciences. Dept. of Animal Sciences. Aquaculture. Mozambique tilapia -- Feeding and feeds Mozambique tilapia -- Mortality Spirulina Dissertations -- Animal sciences Theses -- Animal sciences Assignments -- Animal sciences Dissertations -- Aquaculture Theses -- Aquaculture Assignments -- Aquaculture Thesis (MPhil (Animal Sciences. Aquaculture))--University of Stellenbosch, 2005. This paper contains literature on tilapia culture, feeding and nutritional factors of prime consideration to survival and growth of Oreochromis mossambicus. Results are presented for a three-phase laboratory experiment on survival of O. mossambicus fry in an attempt to evaluate the use of live Spirulina platensis. The experiment was conducted on fry in a closed system in an effort to maximize the use of live Spirulina and also optimize growth and production. Fry were tested for tolerance levels of salinities, 0-35 g/lt, and showed favourable survival rates up to 15 g /lt salinity without being fed. Manipulation of input in freshwater turned high fry mortalities with increasing rates without difference for physical form of Spirulina. Growth was not significantly affected by types of input. However fry grew well at 0-40% rates with considerable survival performance. It is noted good quality of water that allow improved survival and growth of fry in a closed system may be assured with rates of input up to 5 or 10% of bodyweight. These input rates can guide use of live Spirulina in saline water tilapia culture if Spirulina proves good productivity at the consistency of fry tolerance to the salinity levels established in this paper. Masters 2008-06-30T10:08:13Z 2010-07-09T11:08:58Z 2008-06-30T10:08:13Z 2010-07-09T11:08:58Z 2005-04 Thesis http://hdl.handle.net/10019.1/3381 en University of Stellenbosch application/pdf Stellenbosch : University of Stellenbosch |
| spellingShingle | Mozambique tilapia -- Feeding and feeds Mozambique tilapia -- Mortality Spirulina Dissertations -- Animal sciences Theses -- Animal sciences Assignments -- Animal sciences Dissertations -- Aquaculture Theses -- Aquaculture Assignments -- Aquaculture Asgodom, Mihretu T. An investigation of the survival level of Oreochromis mossambicus fry variably kept in a closed system : laboratory experiment |
| title | An investigation of the survival level of Oreochromis mossambicus fry variably kept in a closed system : laboratory experiment |
| title_full | An investigation of the survival level of Oreochromis mossambicus fry variably kept in a closed system : laboratory experiment |
| title_fullStr | An investigation of the survival level of Oreochromis mossambicus fry variably kept in a closed system : laboratory experiment |
| title_full_unstemmed | An investigation of the survival level of Oreochromis mossambicus fry variably kept in a closed system : laboratory experiment |
| title_short | An investigation of the survival level of Oreochromis mossambicus fry variably kept in a closed system : laboratory experiment |
| title_sort | investigation of the survival level of oreochromis mossambicus fry variably kept in a closed system laboratory experiment |
| topic | Mozambique tilapia -- Feeding and feeds Mozambique tilapia -- Mortality Spirulina Dissertations -- Animal sciences Theses -- Animal sciences Assignments -- Animal sciences Dissertations -- Aquaculture Theses -- Aquaculture Assignments -- Aquaculture |
| url | http://hdl.handle.net/10019.1/3381 |
| work_keys_str_mv | AT asgodommihretut aninvestigationofthesurvivalleveloforeochromismossambicusfryvariablykeptinaclosedsystemlaboratoryexperiment AT asgodommihretut investigationofthesurvivalleveloforeochromismossambicusfryvariablykeptinaclosedsystemlaboratoryexperiment |