| Recirculatory Aquaculture System: Optimization of Stocking Density for Intensive Seed Production of Striped catfish, Pangasianodon hypophthalmus |
| Paper ID : 1083-ICIAQUA |
| Authors |
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Ferosekhan Shajahan *1, Sangram Ketan Sahoo2, Pankaj Kumar Tiwari2, Rakhi Kumari2, Sathya Narayan Sahoo2, Saroj Kumar Swain2, Pramoda Kumar Sahoo2, Pratap Chandra Das2 1ICAR-CENTRAL INSTITUTE OF FRESHWATER AQUACULTURE 2ICAR-Central Institute of Freshwater Aquaculture |
| Abstract |
| Recirculatory Aquaculture System (RAS) has been developed for intensive seed production of catfishes. RAS consists of rearing tanks, sensors based automated & energy efficient filtration and aeration systems. The water efficiency was found to be more than 99% and only less than 0.5% water per day is removed along with sludge. A study was conducted to ascertain the optimal stocking density of striped catfish, Pangasianodon hypophthalmus fingerlings for intensive seed production in RAS. In Experiment-I, the stocking density was evaluated at 250, 500, 750 and 1000 fingerlings m-3. P. hypophthalmus fingerlings (4.53±0.007g) were fed with a diet containing 32% CP & 6% CL at 6% body weight thrice a day for the experimental period of 60 days. The final body weight was observed about 19-20 g for all the density groups and there were no differences in weight gain among the density groups. Hence, another experiment was conducted to ascertain the further higher stocking density of striped catfish in RAS. In experiment-II, stocking density was evaluated at 2000, 3000 and 4000 fingerlings m-3. The feeding and husbandry management were followed same like Experiment-I and the study was conducted for 60 days. The final body weight of P. hypophthalmus was significantly higher for 2000 fingerlings m-3 density group (18 g) but lower body weight was observed for higher density group 4000 fingerlings m-3. The FCR was calculated about 1.5-1.7 and the biomass yield of 35-38 kg m-3 was achieved for the stocking density of 2000 fingerlings m-3. In both the experiments, 100% survival was observed. The present study suggests that recirculatory aquaculture system is highly energy and water efficient system for intensive seed production of P. hypophthalmus. |
| Keywords |
| Hi-density seed rearing, Intensive seed production, Recirculatory aquaculture system, Striped catfish |
| Status: Abstract Accepted (Oral Presentation) |