Assessing plant growth, water quality and economic effects from application of a plant-based aquafeed in a recirculating aquaponic system
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- 作者：Miles Medina ; Krishnaswamy Jayachandran ; Mahadev G. Bhat…
- 关键词：Recirculating aquaculture ; Aquaponics ; Aquafeed ; Amaranthus tricolor ; Blue tilapia ; Oreochromis aureus ; Water quality
- 刊名：Aquaculture International
- 出版年：2016
- 出版时间：February 2016
- 年：2016
- 卷：24
- 期：1
- 页码：415-427
- 全文大小：1,223 KB
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Shukla S, Bhargava A, Chatterjee A, Srivastava A, Singh SP (2006) Genotypic variability in vegetable amaranth (Amaranthus Tricolor L.) for foliage yield and its contributing traits over successive cuttings and years. Euphytica 151(1):103–110. doi:10.1007/s10681-006-9134-3 CrossRef
Tacon AGJ, Hasan MR, Metian M (2011) Demand and supply of feed ingredients for farmed fish and crustaceans: Trends and prospects. FAO fisheries and aquaculture technical, Paper No. 564. Retrieved from http://www.fao.org/docrep/015/ba0002e/ba0002e.pdf - 作者单位：Miles Medina (1)
Krishnaswamy Jayachandran (2)
Mahadev G. Bhat (1)
Alok Deoraj (3)
1. Department of Earth and Environment, Florida International University, 11200 SW 8th Street, AHC5 Room 375, Miami, FL, 33199, USA
2. Department of Earth and Environment, Florida International University, 11200 SW 8th Street, AHC5 Room 383, Miami, FL, 33199, USA
3. Department of Environmental and Occupational Health, Florida International University, 11200 SW 8th Street, AHC5 Room 349, Miami, FL, 33199, USA - 刊物类别：Biomedical and Life Sciences
- 刊物主题：Life Sciences
Hydrobiology - 出版者：Springer Netherlands
- ISSN：1573-143X
文摘
Aquaponics, the integrated production of fish and hydroponic crops in a recirculating system, is an intensive cultivation method in which metabolic fish wastes fertilize plants. This study compares the effects of two aquafeeds on Red amaranth (Amaranthus tricolor) productivity and on water quality parameters under cultivation of Blue tilapia (Oreochromis aureus), in three aquaponic replicate units per treatment over a 60-day experimental trial. The fishmeal-based control feed contains higher crude protein (40 %) and phosphorus (1.12 %) than the plant-based alternative feed (32 % and 0.40 %, respectively). The alternative feed resulted in a significantly higher amaranth crop yield (p < 0.05), with significantly lower concentrations of nitrate-N (NO3-N) and total dissolved solids (TDS) in the aquaponic culture water over the course of the experiment. Orthophosphate (PO4-P), total ammonia nitrogen (TAN), pH and dissolved oxygen (DO) levels were not significantly different between the control and alternative aquafeed treatments. Economic analysis revealed that improved plant productivity from the plant-based, lower-protein aquafeed may potentially increase total aquaponic farm revenue despite reduced fish production. Keywords Recirculating aquaculture Aquaponics Aquafeed Amaranthus tricolor Blue tilapia Oreochromis aureus Water quality