KEY TO SUCCESS CULTIVATION MANGROVE CRAB

Published By: Hari Palguna Sen, Jan 6th, 2014

Keramba kepitingAs a farmer who cultivated mangrove crabs (Scylla sp) of course want the benefits, this can be achieved if farmers think and mud crab culture as cultivated. Because farmers reader website always requires writing a concise, systematic, and effective, this paper is entitled: Key to Success Cultivation Mangrove Crab

Some of the principles that need to be known and worked, among others:

Mangrove Crab Biology

1. Reproduction conducted in the waters of the sea, after the fertilized egg placed in the abdomen, behind the tufted karapag-appendix, incubated for 10-12 days, the larvae develop from stadia mangrove crab zoea 1-5 for 18-20 days, for 5-7 megalopa day and peak at stadia crablet experiencing moulting on every 4-7 days to be average-sized seeds 30-50 g/head (2-5 cm long) were achieved during 50-70 days.

2. The quality of water needed for life and can grow well namely: 10-25 ppt salinity, temperature 28-300C, pH 7.5 to 8.5 and DO more than 5 ppm.

3. Mangrove crabs are cannibalistic behavior, moulting crabs are not often found eating crabs are moulting.

4. Feed for mangrove crabs are of various types of animals such as trash fish, Amphibians, reptiles, chicken innards of cutting waste, also liked the shrimp fed a dry pellet, class grower. Larvae feed in the form of phytoplankton (Chaetoceros sp and Tetraselmis sp) and zooplankton (Brachionus sp, and Artemia sp)

How Mangrove Crab Aquaculture

There are 4 methods are based on the goals of production are:

1. Enlargement of seed size of 30-50 g/head to measure the consumption of 200-300 g/ head

2. Fattening of mud crab the size of 100-150 g/ head to measure the consumption of 200-300 g/ head

3. Production of mud crab-shelled, soft shelled. Maintenance period is usually 3-4 weeks.

4. Production of mud crab-spawning, female mud crab size 200 g/head full of eggs or obtained by ablation of the eye. Maintenance period of 1 month and 1-2 weeks after ablation eyes done.

Mangrove Crab Cultivation Techniques

1. Enlargement of seed size of 30-50 g/head to measure the consumption of 200-300 g/head. Be done in various ways depending on the situation and the potential for mud crab farming location. The principle that should be done that should not be loose mud crab, it is necessary to confinement or captivity around the embankment fence of bamboo is quite tight. Avoided than likely going cannibalism. Suggested use battery system, with dense stocking 40 head/m2. If the system does dense stocking ponds suggested two head/m2. 3 month long maintenance.

2. Fattening of mud crab the size of 100-150 g/head to measure the consumption of 200-300 g/head. Suggested maintained battery systems, dispersip solid 40 head/m2. Maintenance 3-4 weeks old.

3. Production of mud crab-shelled, soft shelled. Maintenance period is usually 3-4 weeks. Preserved mangrove crab measuring 150-200 g/head and long maintenance 2-3 weeks. Substitution skin is naturally stimulated by nature that is when the tide is highest, the abundance of feed. Suggested use battery system, with dense stocking 40 head/m2. How this is done to achieve the Survival Rate (SR)  to 100%.

4. Production of mud crab-spawning, female mud crab size 200 g/head full of eggs or obtained by ablation of the eye. Female mud crab has the characteristic that small claws, and dilated abdominal carapag. Maintenance period of 1 month and 1-2 weeks after ablation eyes done. Suggested use battery system, with dense stocking 40 head/m2. Type of feed should be rich in protein in sufficient quantities, from bebrbagai trash fish, squid and mussels.

Feeding

• Mangrove crabs fed with different types of feed of squid, clams, fish trash, Amphibians, reptiles, chicken offal, or dry pellets, shrimp feed to class grower. Feed given 2 times a day, the dose of 2-3% of the biomass of mangrove crabs.

Disease Control

• mangrove crab disease can be prevented by keeping the quality of the water remains in good condition, keep the environment be dirty and the use of antibiotics that tend to settle to the pond bottom.

Kepiting bakauKepiting bakauHarvesting Method

• The maintenance of the system plus the bamboo fence, harvesting is done by throwing water added up to a depth of 30 cm and crabs caught with a bamboo stick made as marker. This method is not recommended because it often leads to escape bites and mud crab prices will plummet. The recommended way of getting rid of pond water to run out, and crabs will be more easily captured by seser of bamboo material. Mangrove kepinting foot binding correctly, it can prevent mangrove crab claw off and the way this was done to facilitate transport.

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