Culture of barramundi (Lates calcarlifer BLOCH, 1790) size 4 to 6 inches in a recirculating system
2011
Nikhom La-ongsiriwong(Department of Fisheries, Bangkok (Thailand). National Institute of Coastal Aquaculture) E-mail:[email protected] | Lakana La-ongsiriwong(Department of Fisheries, Bangkok (Thailand). National Institute of Coastal Aquaculture) | Patchara Mearah(Department of Fisheries, Bangkok (Thailand). Coastal Fisheries Research and Development Bureau. Satul Coastal Aquaculture Research and Development Center) | Kom Silapajarn(Department of Fisheries, Bangkok (Thailand). National Institute of Coastal Aquaculture)
Experiment on barramundi (Lates calcarlifer BLOCH, 1790) rearing was conducted in 2- identical recirculating systems. Each system includes 3-culture tank, sump of water tank (divided 2 parts: sedimentation and filter part), biological filter tank, protein skimmer, reservoir and make up tank. Local natural materials were used as biological filter. The fish were cultured at stocking of 750 individuals (average 153 individuals/cubic m) with initial length and body weight of 3.7+-0.2 inches and 10.7+-1.9 g, respectively. After 30-days of performance, the average length and body weight was 4.9+-0.4 inches and 25.3+-6.3 g, respectively, survival rate was 89.9 percent and FCR was 1.61 for the trial I. In trial II, the average of length and body weight was 5.6+-0.6 inches and 44.5+-12.8 g, respectively, survival rate was 96.3 percent and FCR was 0.94. Most capital cost of barramundi rearing in the recirculating system is fry cost, comprised 58 percent of total cost. This RAS shows the several outstandings such as system simplicity, simply management, using local natural materials as biofilter etc.
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