Productivity Improvement of Mud CrabsScylla sarrata (Forskal) in Cage-PondUsing Different Sheltering Materials

Abstract

   Mud Crab, Scylla serrata (Forskal) are important economic aquatic animals. The demand of consumers has increased. The problems with impact production are crab eating during the molting. Study on productivity improvement of
Mud Crabs in cage-pond using different sheltering materials was carried out. It aims to study on growth rate, survival rate and compare the productivity of Mud Crab in earthen ponds. The experiment was divided into three treatments of
six replications; 1) no sheltered materials used (control), 2) use sheltered materials from bamboo and 3) use sheltered materials from old tires. The Mud Crab’s weight was 166-188 grams cultured in ponds using floating net cages of 6x4x2 meters. The deployment rate was 120 crabs per cages within 4 months. The result showed that the Mud Crabs of treatment 2 gained the highest average weight of 194.94 grams and FCR of 5.44. Moreover, the Mud Crabs in treatment 2 gained the highest survival rate of 69.83 percent with statistically significant difference (p < 0.05). The productivity quantity of treatment 1, 2 and 3 was equivalent to 77.74, 126.17 and 103.29 kilogram, respectively.