Growth and survival rate of mud crab crablet, Scylla tranquebarica fed a multi-enzyme supplemented diet Edison Saade1, Sulaeman2 and Ahmad Albar1
Hasanuddin University
Abstract
Multi-enzyme plays an important role in the optimal growth of mud crab, Scylla tranquebarica. This study aimed to determine the best dose of multi-enzyme on the growth and survival rate of mud crab crablets. Each crablet was kept in a plastic-cup container with a volume of 450 mL filled with 250 mL of seawater that arranged in a 500 L volume fiber tank. The fiber tank is equipped with an aeration system. Multi-enzyme was sprayed to artificial feed about 10 minutes prior feeding at a dose of 0 cc/kg of feed (treatment A), 30 cc/kg of feed (treatment B), and 60 cc/kg (treatment C) and apply for 50 days. The frequency of feeding was twice a day, morning and evening with a dose of 5% per crablet weight. Parameters measured were growth in relative weight (GweR), growth in relative shell width (GwiR), growth in relative shell length (GslR) and survival rate (SR). In addition, several water quality parameters are measured as supporting data. The data is processed descriptively. The results showed that GweR, GwiR, and GslR were increased up to a dose of 30cc/kg of feed and decreased at a dose of 60cc/kg of feed. Survival rates were 100% in all treatment units. Based on the results of this study, it was concluded that the dose of multi-enzyme for the best growth and survival rate of mud crab crablet was 30cc/kg of feed.
Keywords: Growth, mud crab crablet, multi-enzyme, and survival rate
