PEMELIHARAAN IKAN PATIN SIAM (Pangasius hypopthalmus) DENGAN SISTEM RESIRKULASI PADA WADAH DENGAN BENTUK YANG BERBEDA

Bora Marissa Pasaribu, Mulyadi ', Usman M. Tang

Abstract


This research was conducted from May to June 2017 for 45 days in Hatchery
TIU (Technical Implementation Unit) of Marine and Fisheries Faculty, University of
Riau. The aims of this study were to determine the growth and survival rate of Siamese
catfish which were reared on different shape of the tanks. The tanks were made of
tarpaulin plastic material with 30 L of water volume capacity. Stocking density of
experimental fishes were 30 fishes/tank. The method of the study was an experimental
method with 4 treatments and 3 replications. The treatments were: P1 = circle shape, P2 =
Square-shape, P3 = Octagonal shape, P4 = Triangular shape, and P5 = Rectangular
shaped. The result of this study can be concluded that different shape of tanks have no
significant effect on growth and survival rate performance of the Siamese catfish fries.
The growth performance of round, square, octagonal, triangle and rectangular shape of
tanks respectively has given an absolute weight growth of 5.93 g; 6.00 g; 6.18 g; 5.72 g
and 5.77 g, then an absolute length growth were 4.88 cm; 4.93 cm; 4.91 cm; 4.76 cm and
4.85 cm, a daily growth rate 4.24%, 4.32%, 4.27%, 4.21% and 4.24, the food efficiency
92.67%, 92.63% , 94.31%, 92.42% and 91.23% and the survival rate 100%, 97.8%,
100%, 98.9% and 100% respectively. The result of water quality measurement which is
still in the optimal range for rearing the Siamese catfish where the temperature was 28-30
° C, 5-6 of pH, 5-6 mg/L of DO, 0,03-0,05 mg / L of Ammonia, 0,17-0,20 mg / L of
Nitrite, and Nitrate was 0.80-0.98 mg / L.
Keywords : Pangasius hypopthalmus, recirculation system, different shape of tank
survival rate


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