Utilization of biogas slurry for tropical fish culture | |
| Author | Morales, Evelina Cusi |
| Call Number | AIT Thesis no. 1400 |
| Subject(s) | Sewage sludge as feed Fish-culture |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science of the Asian Institute of Technology, Bangkok, Thailand |
| Publisher | Asian Institute of Technology |
| Abstract | Biogas slurry with highly polluting organic matter was tested for its potential as manure to fishpond. A biologically balanced waste treatment system was created providing 95% BOD5 removal efficiency and effluent with low BOD5 and nutrients. The existing food web in the ponds was hypothesized to be based on bacteria, by-passing the productivity limits imposed by the sun. Production in ponds of different stocking densities with different feeding rates were compared and results showed that fish yields of 3,710 to 5,145 kg/ha/yr could be produced. These yields should not be taken as conclusive because feeding was discontinued during the length of study. Effects of stocking density and feeding rates on production were discussed. This preliminary study of waste recycling showed the possibility of biogas slurry as potential substitute for fertilizer in fishponds and the good fish yields possible in a system in which the optimal organic loadings and fish stocking densities may not have been used. |
| Year | 1978 |
| Type | Thesis |
| School | Student Research Before 1979 |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Thesis (Year <=1979) |
| Chairperson(s) | Edwards, Peter |
| Examination Committee(s) | Chongrak Polprasert |
| Scholarship Donor(s) | Government of the United States of America |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 1978 |