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Add To Calendar 29/04/2016 10:10:0029/04/2016 10:30:00Africa/JohannesburgAsian-Pacific Aquaculture 2016VANNAMEI SHRIMP Litopenaeus vannamei CULTURE WITH DIFFERENT INITIAL SIZE OF SEED IN FLOATING NET-CAGES Diamond 3The World Aquaculture Societyjohnc@was.orgfalseanrl65yqlzh3g1q0dme13067DD/MM/YYYY


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

Most of white shrimp Litopenaeus vannamei production in Indonesia is for export and generally come from pond culture production.  Indonesia has coastal line number 3 in the world that is composed of street and bay that is very potential for marine fish culture including vannamei shrimp farming in floating net-cages. The successfully of mariculture in floating net-cages depend on several factors. One of the factors is initial size of the seed. The purposed of the study was to know the survival rate, growth, harvest size, feed conversion ratio and economically prospect of the white shrimp culture in floating net cage with different initial size of seed. The study was done with different initial seed size treatment, as follows: post larvae (PL) 10 for treatment A and Juvenile (PL 40) for treatment B for 118 days from March, 16th to  July, 13th 2015 for treatment A and from March, 17th to June, 11th for treatment B. Vannamei shrimp was reared in happa net-cages for first 1.5 months and changed with waring net-cages (mesh size 4 mm) with net size 2,5 m x 3,5 m x 2,5 m for treatment A and without happa net-cages for treatment B with the same net-cages size. Animal was feed with shrimp commercial diet with dosage according to shrimp feed factory manual with feeding frequencies was 6 times/day (06.00; 09.00; 12.00; 16.00; 20.00 and 23.00). To know shrimp growth, sampling was done every 7 days after 1 month rearing for treatment A and every 7 days for treatment B.  

Results of the study showed that the best survival rate, harvest size and production per m³ was treatment B (78.73%; 52.83 and 1.46 kg/m³) followed with treatment A (73.85 %; 61.7 and 1.20 kg/m³).  The feed conversion ratio was equal (2.3).  Simple economically analysis indicated that treatment A was more profitable with B/C ratio 1.69 than treatment B with B/C ratio 1.586. Over all the study performance could be seen in Table 1.  

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