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Add To Calendar 29/04/2016 09:50:0029/04/2016 10:10:00America/ChicagoAsian-Pacific Aquaculture 2016WHITE SHRIMP Litopenaeus vannamei CULTURE WITH DIFFERENT WATER DEPTH IN FLOATING NET-CAGES   Diamond 3The World Aquaculture Societyjohnc@was.orgfalseanrl65yqlzh3g1q0dme13067DD/MM/YYYY


Herno Minjoyo*, Silfester Basi Dhoe, Akhmad Murtadho  
Main Center for Marine Aquaculture, Lampung-Indonesia

Indonesia is a archipelagic country which has 3rd longest coastal line in the world. Indonesian seawater area composed as strait and bay that is very potential for marine fish culture including vannamei shrimp farming in floating net-cages. Based on the reason, the study on vannamei shrimp culture in floating net-cages was done to know the survival rate, feed conversion ratio, growth and harvest size. Shrimp vananmei was culture in different net-cages depth as follows: (A) 2 m; (B) 3 m; and (C) 4 m, and  the initial seed size was post larvae (PL) 10 for 118 days from July 29th to  November 26th 2015. Type of nets which were used are happa net for about first 1,5 months then changed with waring-net (mesh size 4 mm), with net-cage size 2,5 m x 3,5 m. Animal was feed with shrimp commercial diet with dosage according to shrimp feed factory manual with feeding frequency 6 times/day ( 06.00; 09.00; 12.00; 16.00; 20.00 and 23.00). To know shrimp development, sampling was done every for 7 days after 1 month rearing.  The result of study showed that the best survival rate, harvest size and production per m³ was treatment  A, consecutively were 75.333%; 73.69 and 1.022 kg/m³; followed with B consecutively were 65.33%, 78.39 and 0.85 kg/m³) and C consecutively were 52.39%; 89.41 and 0.648 kg/m³.  The best feed conversion ratio was treatment B 1.84 and followed with treatment A 1.99 and C 2.58.  The last observation was the total harvest per net-cages, treatment C was 23.35 kg and followed with B 22.95 kg and A 18.4 kg. In general performance of culture observation could be seen in Table 1.   

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