Preliminary trials for the nursing of Chinese catfish (Silurus asotus) in cages in tilapia culture ponds | |
| Author | Wang, Jian-ying |
| Call Number | AIT Thesis no. AE-94-21 |
| Subject(s) | Catfishes Tilapia |
| Note | A thesis submitted in the partial fulfillment of the requirement for degree of Master of Science, School of Environment, Resources & Development |
| Publisher | Asian Institute of Technology |
| Abstract | Chinese catfish (Silururs asotus) fry were reared in low volume cages (1 mA3) at three stocking densities i.e., 100, 150, and 200 fry/cage in the first trial, and 50, 100, 150 fry /cage in the second trial) . Three cages with three catfish stocking densities were put in one pond (100 mA2 ) . Tubifex worm mixed wit h powder feed was used to train the fry to accept complete diet in the first trial, and minced trash fish mixed with powder feed was used for the second trial . Tilapia fingerling was reared in two stocking densities (1 fingerling / mA2, 2 fingerling /mA2 ) outside nursing cages . Results of both trials showed that the catfish survival rate was significantly increased with decreasing stocking density . Tubif ex worm was proved not to be a ideal feed for nursing and training catfish fry . Minced trash fish mixed with powder feed resulted 64% survival of catfish at stocking density of 50 fry /cage. There were no significant differences on catfish growth (Daily weight gain and Percent weight gain ) among three stocking densities. Tilapia reared outside nursing cage can efficiently utilized nutrient waste which was l e aked from nursing cage. Daily weight gain and percent weight gain for tilapia was 1.70 g/day and 332.5% respectively in the stocking rate of 1 fish/ mA2. |
| Year | 1994 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Agricultural and Food Engineering (AE) |
| Chairperson(s) | Lin, Chang Kwei |
| Examination Committee(s) | Little, David C. ;Yakupitiyage, Amararatne |
| Scholarship Donor(s) | British Government |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 1994 |