Traditional shrimp farming systems are of four varieties based on shrimp cultivation administration, manufacturing, stocking density and so on. The systems of shrimp farming are listed under.
4 Kind Of Shrimp Farming System
- Extensive System
- Improved Extensive System
- Semi-intensive System
- Intensive System
A short description of those farming system including farm management, stocking rate, production are given beneath.
Extensive system is the easiest shrimp farming technique. That is the oldest technique with low threat and requires little funds. This shrimp farming methodology is completely dependent on nature. Shrimps are cultivated without serving any supplementary fish feed. This system is available in Bangladesh and some other Asian countries from the ancient time. On this system the shrimp farming pond are usually not construct in correct deliberate approach. The area of the farm become more than 20 hectors. Embankment of the financial institution turn into sloping with water depth of 0.3-1.2 miter. Bottom soil is bumpy and has no canal for drainage. Water management is irregular and the farm just isn’t free from cannibalistic and undesirable fish. The shrimp has not serve any supplementary feed. Generally 10-15 thousand minnow are stocked per hector. In in depth system of shrimp farming different fish species may also be cultivated with shrimp. About 200-250kg shrimp produced from this cultivation system. About 85-90% land are getting used for shrimp cultivation in this system in Bangladesh.
Improved Extensive System
Improved extensive system of shrimp farming wants deliberate pond design, canal for drainage of water, suitable embankment and many others. Water pump are stored for adequate water administration. Organic and non-organic (chemical) fertilizer and supplementary feed are provided to the fish. In improved in depth system about 30-40 thousand minnow are stocked per hector. 400-500kg shrimp per hector might be produced by utilizing this technique. This system wants medium capital and risk is low. Lime and fertilizer are used for enhancing the qualities of soil and water. It is rather essential to take away cannibalistic fish and harmful aquatic insects and prevent numerous varieties of aquatic weeds.
Semi-intensive system is applied in small sized pond. The basal stage of the pond is aircraft, pond is sloping to a facet and totally precipitable. It has planned water provide administration, controlling cannibalistic fishes and serving high quality pullet feed amenities. About 0.2-0.Three million minnows are stocked per hector and served enough food. This varieties of farm produce about 4-5 tons of shrimp per hector yearly. Semi-intensive shrimp farming system wants skilled people and excessive capital. Measured lime and fertilizer are used for producing ample natural food of fish in the pond. Machines are used for making oxygen in the water of pond and eradicating clay from the basal stage of pond.
Shrimp farming in intensive system may be very costly. Many international locations world wide use this system for shrimp farming. In this varieties of system natural meals are produced for fishes by using lime and numerous varieties of fertilizer within the pond. High quality water and serving top quality pullet feed is essential for intensive system. The pond sized bellow one hector is appropriate for this. About 15 minnow are stocked per square miter and it produces about 5-10 tons of shrimp per hector. The farmer must be very cautious for intensive shrimp farming system.