Abstract
Recirculating greenwater aquaculture technology is an appropriate method for producing commercial quantities of tilapia in areas where water is scarce. Greenwater systems achieve better fish production, more than 90% water recycling and nutrient utilization. This study was designed to address the diurnal dynamics of certain water quality parameters in greenwater system. Culture tanks were stocked at a density of 40 fish/m3 with mixed-sex Nile tilapia, Oreochromis niloticus fingerlings and fed ad libitum with floating pellets containing 34% protein. The water temperature was kept 28±1ºC, aeration was provided and sludge was collected twice daily. Values of critical chemical parameters in the water were found to be well within the acceptable limits based on diurnal water sampling. @JASEM
Highlights
Deprived freshwater resources and harsh climatic conditions limit the development of freshwater aquaculture in Saudi Arabia
Water recirculating greenwater technology for semiintensive fish culture and maximum water recycling was developed in Saudi Arabian climate to produce Nile tilapia
Overall system performance and fish production is determined by water quality, major water quality parameters were regularly tested in order to establish the success of this system
Summary
Deprived freshwater resources and harsh climatic conditions limit the development of freshwater aquaculture in Saudi Arabia. Greenwater aquaculture systems aim to increase fish production, proper nutrient utilization, maximum water recycling and least water wastage. Water recirculating greenwater technology for semiintensive fish culture and maximum water recycling was developed in Saudi Arabian climate to produce Nile tilapia.
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