YOGYAKARTA - The prospect of the Indonesian marine business is very promising, especially through the fisheries sector. If you are looking for maximum quick chances, then mangrove crab cultivation is the answer. The article will guide you starting from scratch.
Market demand for mangrove crabs continues to increase, both at home and abroad. Don't miss this golden opportunity! Let's learn about efficient steps by steps to raise livestock techniques so that your harvest is successful.
Reported by VOI from the website of the Denpasar City Fisheries and Food Security Service, mangrove crabs are a type of crab that lives in two natures (waters and land).
ideally, this crab habitat includes coastal waters that contain mangroves, river estuary areas (estuari), and muddy or sandy shallow water.
In class, mangrove crabs are included in the Artropod Philosophy, Krustasea Class, and the Dekapod Ordo.
The male and female crab differentiators are located in the shape of the stomach or "soft". The male crab has a narrow triangular-shaped stomach that is tapered. Meanwhile, the female has a broader and more blunt triangular-shaped stomach, as well as an abdoment section that is rounder for the reproductive function.
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The behaviors that need to be considered in the management of mangrove crabs include:
Bakau crab cultivation is now more efficient thanks to the innovation of the Karamba Battery Cell or Soliter system. This method keeps crabs individually in box barriers made of bamboo or plastic.
The main advantage of this method is to address the problem of cannibalism, which is the biggest cause of death in traditional cultivation. Here are five important points that must be considered in implementing cultivation:
The success of cultivation is very dependent on the conditions of the water environment. The ideal location must be in the form of a pond with a muddy bottom.
Water quality parameters must be closely maintained, with optimal salinity ranging from 10-25 ppt (salt levels above 30 plt to lower the charging power), ideal temperatures 28-33 degrees Celsius (need attention as high temperatures increase toxic ammonia), pH 7.5-8.5, and Solute Oxygen (DO) levels must be above 5pm.
The seeds used are adjusted to the cultivation objectives. For enlargement, it is used by crab cubs weighing 30-50 grams to reach consumption measures.
Meanwhile, crabs measuring 150-200 grams are used as seeds for fatting programs, soft shell production (soka), and production of egging crabs (specifically females).
In addition to using the Battery Cell system, conventional containers can also be used in the form of pond plots fenced with bamboo with an area of 100m2 to 0.5 ha.
The feed given generally is cheap rucah fish or pond-disturbing animals (such as snakes orferencing) which are cut into small pieces. The feed ransum ranges from 3-5 of the total weight of crab biomass, given 2-3 times a day.
Feeding should not be excessive because the remaining feed will rot in the pond, which can reduce water quality and have a bad impact on crab health.
Harvesting can be done simply by throwing some of the pond water up to a depth of about 30 cm. For total capture, the pond is completely dried, and the crab is caught using a seser.
Then the crabs hidden in the mud can be taken with a bamboo sequencing or special penki to dredge the mud layer.
The last but very important aspect is crab-binding skills. The crab has a very strong cap and its limbs break easily during treatment. If the limbs are incomplete, the selling price of the crab will drop drastically.
Therefore, cultivation managers must carefully study how to bind crabs to ensure that the products sold remain intact and have high value.
By following the various steps above, the cultivation of the mangrove crab of the Solitary system offers smart solutions to overcome cannibalism. By maintaining optimal water quality and mastery of basic techniques, this effort promises efficient and high economic value crops.
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