UTILIZATION OF TAIWANESE CLAM (Anadonta woodiana, Lea) AS BIOFILTER IN CULTURING SYSTEM OF SILAIS (Ompok hypopthalmus)

Abstract

The research was conducted from April until June 2012 at Aquaculture Technology Laboratory Fisheries and Marine Science Faculty of Riau University. The aim of the research was to improve water quality through the biofilter using taiwanese clam (Anadonta woodiana, Lea) on culturing system of silais to increase the growth and survival rate of silais (Ompok hypopthalmus). The method used was experimental method and RAL one factor with 3 level of treatments. The treatment with stocking density of 10, 15 and 20 taiwanese clam (Anadonta woodiana, Lea) respectively. The result indicated that different stocking density of taiwanese were have significantly effect on water quality (NH3), growth rate and survival rate of silais (Ompok hypopthalmus). The best result was achieved by 20 taiwanese clam (Anadonta woodiana, Lea). Total absolute body weight of silais was 9.53 grams, daily growth rate of 2,18 % and survival rate of 100%.