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Experimental culture of black tiger shrimp Penaeus monodon Fabricius, 1798 in open sea floating cage

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Relation http://eprints.cmfri.org.in/10937/
 
Title Experimental culture of black tiger shrimp Penaeus monodon
Fabricius, 1798 in open sea floating cage
 
Creator Maheswarudu, G
Rao, G Syda
Ghosh, Shubhadeep
Ranjan, Ritesh
Dash, Biswajit
Muthukrishnan, P
Veena, S
 
Subject Cage culture
Prawn and Prawn fisheries
 
Description An experiment was designed and conducted to assess the feasibility for culture of Penaeus monodon in 6 m dia HDPE circular floating cage, installed at 10-12 m depth off Visakhapatnam in the Bay of Bengal. The cage was fixed with three cylindrical nets; inner net of 2 mm mesh (6 m dia×5.5 m height) to rear post-larvae from stock to 80th day; middle net of
10 mm mesh (6 m×5.5 m) to rear juveniles from day 81 onwards and an outer net of 40 mm mesh (8 m dia×4.5 m height) to prevent entry of predators. Post-larvae (PL23) of P. monodon (mean total length 16.1±3.8 mm), were stocked in the cage at a density of 1179 PL m-3). Bottom water parameters viz., salinity, temperature, dissolved oxygen, pH and ammonia (NH3-N) recorded in the cage site during the culture period were 34-35 ppt, 26-32°C, 3.9-4.6 ml l-1, 8.1-8.3 and 0.05-0.07 mg l-1,
respectively. Shrimp feed varying in size suitable to different growth stages, was used during the trial. Feed was given twice during the first 20 days and thrice during 21-99 days. Feeding rate per day ranged from 133.3% of the biomass of shrimp at stocking time to 3.1% of the biomass of shrimp at preharvest. P. monodon registered a growth rate of 0.87 mm
(TL)/0.018 g (wt) per day during first 30 days; 0.89 mm/0.069 g per day during 31-60 days and 0.37 mm/0.051 g per day during
61-90 days. On day 100, about 207 kg of shrimp (production rate, 1.62 kg m-3) was harvested and the mean size of harvested shrimp was 81.54±15.20 mm TL/4.50±2.80 g wt. Survival recorded was 31.4% and the feed conversion ratio (FCR) was 3.97. Present study demonstrated the possibility for culture of P. monodon in open sea floating cage. The possible causes for low survival and high FCR are discussed.
 
Date 2016
 
Type Article
PeerReviewed
 
Format text
 
Language en
 
Identifier http://eprints.cmfri.org.in/10937/2/46459-150550-1-PB%20%283%29.pdf
Maheswarudu, G and Rao, G Syda and Ghosh, Shubhadeep and Ranjan, Ritesh and Dash, Biswajit and Muthukrishnan, P and Veena, S (2016) Experimental culture of black tiger shrimp Penaeus monodon Fabricius, 1798 in open sea floating cage. Indian Journal of Fisheries, 63 (2). pp. 47-54.