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Productivity and economic viability of snakehead Channa striata culture using an aquaponics approach |
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| Institution: | 1. Aquaculture Division, ICAR-Central Institute of Fisheries Education, Yari Road, Versova, Andheri (W), Mumbai, India;2. ICAR-National Bureau of Fish Genetic Resources, Canal Ring Road, P.O. Dilkusha, Lucknow, India;3. Aquatic Environment and Health Management Division, Central Institute of Fisheries Education, Yari Road, Versova, Andheri (W), Mumbai, India;1. Department of Fisheries, Faculty of Agriculture, Khon Kaen University, Khon Kaen, Thailand;2. Cargill Meats (Thailand) Co., Ltd, Saraburi, Thailand;1. College of Aquaculture and Fisheries, Can Tho University, Can Tho, Viet Nam;2. Department of Nutrition and Food Sciences, University of Rhode Island, Kingston, RI 02881, USA;3. Department of Fisheries, Animal and Veterinary Science, University of Rhode Island, Kingston, RI 02881, USA |
| Abstract: | This study was carried out to investigate the viability of utilizing aquaponic technology in culturing local fish: snakehead Channa striata and water spinach Ipomoea aquatica. Snakehead was raised for 150 days in a floating plastic pond with an area of 3 × 4 × 1.2 m having a capacity volume of ～14.4 m3. Fish were randomly arranged into two experimental systems at density of ～0.3 kg fingerlings/m3 e.g. SAQ – snakehead in aquaponics; SC – snakehead in normal system where control ponds were continuously aerated with ～20% daily exchange of water. Fish were fed commercial feed twice a day. Initial results showed that in aquaponics compared with normal systems the SAQ efficiency exhibited 70% water exchange; five times lower in NH3 level: (0.01–0.03 mg/L vs. 0.05–0.16 mg/L); three times lower in NO2 level: (0.28–0.58 mg/L vs. 0.56–2.59 mg/L). Snakehead production was significantly higher in aquaponics with higher survival ratio of fish: 99.76% vs. 71.40%; ～3 times higher in fish yield: 366 kg vs. 130 kg. The production of water spinach was also elevated in aquaponics versus normal systems 406.4 kg vs. 188 kg. The total income from snakehead and water spinach in SAQ were 4 times higher than in normal farming systems: 1219.42 $US and 307.04 $US. Based on the results of the current study, it is expected that applying aquaponics utilizing local available materials and species will enhance the sustainability of the overall system and keep the aquaponics lasting and expanding to social life especially on sustainable culturing snakehead Channa striata. |
| Keywords: | Green agriculture Applied aquaponics Snakehead Water spinach Climate change |
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