Abstract:
The research was conducted from April to May 2012, at Aquaculture Technology Laboratory Fisheries and Marine Science Faculty of Riau University Pekanbaru. The purpose of this research was to investigate the growth and survival rate of silais fish (Ompok hypopthalmus) with different stocking density combining with crayfish (Cherax albertisii), to provide information of policulture activity of silais and crayfish in order to cultivate in limitid area. The silais fish used in this study was 180 fish with size of 5-6 cm and crayfish measuring about 4-5 cm by 45. Feed used in the form pellets 903 by feeding 3 times a day. The methods used in this study was an experimental method and RAL one factor with 3 level of treatments. Treatments of this study were P1 (15 silais and 5 crayfish), P2 (20 silais and 5 crayfish) and P3 (25 silais and 5 crayfish).
The best result was achieved by P1 with stocking density of 15 silais and 5 crayfish. Total absolute body weight of silais was 11.73 grams, growth rate 8.13 cm, daily growth rate of 5.00 % and survival rate of 97.78 %. Whereas total absolute body weight of crayfish was of 1.89 gram, growth rate 1.11 grams, daily growth rate of 1.70 % and survival rate of 60 %.
