Comparative Nutritional Pattern of Fattened Mud Crab (Scylla olivacea) Fed with a Novel Formulated Feed

Abstract:

A formulated feed with 52.89% protein and sole fish use as trash fish with 16.88% protein for fattened crab with different feeding regime, after 45 days feeding on both formulated feed and trash fish with several ratios, the nutritional composition (protein, fat, ash and moisture) of fattened and wild mud crab (Scylla olivacea) was compared. The protein content was in the range of 9.25% to 15.96%, while lipid varied from 0.89% to 1.39%. On the other hand, the moisture content was found in Scylla olivacea was 73.96% to 88.64% and the ash content was 1.55% to 8.82%. The proximate composition of crabs fed with the different feeding regime did not show any variation. The study found that Scylla olivacea in T6 treatment has slightly higher both protein (13.53%) and lipid (1.39%). T5 treatment has lower moisture (83.81%) content compared to other treatments. All the consideration the present study demonstrated wild mud crabs nutrition profile was better than trial crabs. But formulated feed and alternative feeding trail performance was good. There was no significance difference (p>0.01) in protein content of phase 1 and phase 2. Formulated feed could work nicely, easy storage, transport and reduced pressure on marine ingredients.