Addition of crude fish oil (CFO) in feed toward fat and energy retention of mud crab (Scylla serrata)

Abstract

Mud crab (Scylla serrata) is a brackish water organism that has quite big market potential because it has tasty flavour and high nutrition. Natural feed of mud crab is trash fish, one of the example is kuniran fish that has 15.43% of protein, 0.46% of fat, 84.29% of water, and 0.77% of ash. Crab needed 4.8-10.8% fat in feed, but kuniran fish has 0.46% fat, so it needs the additional of fat. Fat is very important to support fish growth rate. Fat is needed as an energy source to maintenace the body and tissue function. Therefore it is needed the addition of fish oil as one of fatty acids source that have 55.8791% ether extract, 10.7173% omega-3 fatty acids EPA, and 7.0108% DHA. The aims is to know the addition of Crude Fish Oil (CFO) in feed affects fat and energy retention of mud crab. The methods was experimental methods with randomly complete design which consists of five treatments and four repetitions. The treatments used 0%, 2%, 4%, 6% and 8% as the addition of CFO in feed. Data analyzed by statistic and descriptive. Result showed that fat and energy retention for each treatments has no significantly different (p>0.05).