Efficiency of rice, morning glory and aloe vera to uptake nitrogenous wastes in aquaponic system with tilapia hatchery | |
| Author | Chonnikarn Piyavorasakul |
| Call Number | AIT Thesis no.AQ-21-01 |
| Subject(s) | Aquaponics Fish hatcheries Tilapia |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Aquaculture and Aquatic Resources Management |
| Publisher | Asian Institute of Technology |
| Abstract | Many areas have experience water shortages. Aquaculture sector needs a lot of water for hatcheries, nurseries, or grow-out farming. In dry zones water shortage is excessively high, which has been aggravated by climate change and global warming. Aquaponics systems and water Recirculating Aquaculture System (RAS) offer some solutions. An experiment was conducted for 8 weeks from December 2020 – February 2021 to investigate the potential of combining aquaponics system and a tilapia hatchery system which uses RAS for incubating the eggs, embryos and larvae of Nile tilapia (Oreochromis niloticus). Three different types of plants; namely, Rice berry seedlings, Morning glory, and Aloe vera were simultaneously grown in the water which came from egg incubation and larval rearing systems. The trial was conducted creating an aquaponics in tilapia hatchery system that consists off a fish tank (800L), a water storage header tank (1,000L), and a water tank (250L) served as pumping, two plant beds for planting divided to be four parts in each eight replications for each of the three plants and a controls four treatments. Rice and Morning glory, and Aloe vera in two systems including sand bed and raft unit. Data on changes in plant biomass, initial-final proximate analysis, and nitrogenous wastes with water quality parameters were analyzed using Multifactor ANOVA, Tukey’s test and Students t-test using SPSS program ver. 22 at significance levels of 0.05 or 0.01. Results showed that Morning glory weight increased significantly (P<0.05). It had good growth i.e., 20.6±3.0 (Mean± SE g/tray) for sand bed and 17.2±3.97 for raft. Proximate compositions also showed significant differences among the plants. Aloe vera had lower moisture content at the end in both systems but Rice seedlings and Morning glory did not differ between the systems. Final protein contents of plants were higher than initial. Morning glory had higher in raft bed than in sand bed. Aloe vera had lower lipids in sand beds than in raft and initial. Rice seedlings had higher in sand beds than at initial and raft system. Total ammoniacal nitrogen (TAN) showed a cycle of ups and downs indicating addition of new and conversion to NO2 – , and NO3 – . NO2 – level was very low level and did not show any difference among plants. NO3 – shows increasing trend up to 4th cycle, then declining trend afterwards indicating that plants have taken it although no significant difference was observed between plants. DO in Rice plots was higher throughout the trial period than in other plant plots in sand bed system. Aquaponicssystem can be combined with tilapia hatchery system using water recycling system. Morning glory can grow fast in aquaponic system by up-taking nitrogenous wastes even at low concentration in both sand bed and raft systems. Rice and Aloe Vera are not suitable in aquaponic system if the nitrogenous wastes are at low concentrations. |
| Year | 2021 |
| 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) | Bhujel, Ram C. |
| Examination Committee(s) | Datta, Avishek;Loc Thai Nguyen |
| Scholarship Donor(s) | Her Majesty the Queen’s Scholarship (Thailand) |
| Degree | Thesis (M. Sc.) - Asian Institute of Technology, 2021 |