Prawn Culture ( Zooconcept.in )

Prawn Culture:-

In this article we will discuss about the Prawn Culture:- (1) Introduction, (2) Life Cycle, (3) Culture Method.

Contents:-

(1) Introduction
(2)Types of species fresh water prawn
(3)Macrobrachium Rosen Bergii
(4) Life cycle of fresh water prawn
(5) Culture method

A fresh water prawn farm is an aquaculture business designed to raise and produced fresh water prawn or shrimps for human consumption. Fresh water prawn farming share many characteristics with & many of the same problems as Marine shrimp forming.
The fresh water prawn are crustacean belong to the Phylum Arthropoda. There are different types of species of fresh water prawn they are:-

(1) Medium White Prawn
(2) Green tiger prawn
(3) Banana prawn
(4) Red tail Prawn
(5) Curuma prawn
(6) King prawn
(7) Flower tail prawn
(8) Brown Shrimps
(9) Yellow Shrimps
(10) Bird Shrimps
(11) Kiddy Shrimps
(12) Rain bow Prawn
(13) Spear Prawn
(14) Coarse Prawn
(15) Heddel Shrimps
(16) Hunter Prawn / Pink Prawn
(17) Spider Prawn
(18) Rishna Prawn
(19) Giant Prawn
(20) Monsoon river Prawn
(21) Slender river Prawn
(22) Rough river Prawn
(23) Indian Nylon Shrimps
(24) Pendalid Shrimps
(25) costal mould Shrimps
(26) Red Shrimps
(28) Paste shrimps etc…

Macrobrachium Rosen Bergii:-

In the most common fresh water prawn. It is a giant river prawn the second walking leg is larger and hence the name Macrobrachium. It lives Eseheria & Braking water. Throughout the world it long to lives in the bottom. It prefer muddy environment. It is an omnivores. It grow to length of 32cm & weight of 200gm.The males are the larger than female.

Life cycle of Fresh water prawn:

All formed fresh water prawn belong to Macrobrachium until 200 only species farm was the Macrobrachium Rosen bergii. In 2003 these three species accounted from all formed fresh water prawn about 2/3 Macrobrachium Nipponense.
During the breeding season sexually mature adults migrate in to the estuaries. The male & female copulate the eggs are excluded by the female with in the day of copulation. The male deposite the spermatophores. At the base of the walking legs. The egg are fertilizer by the sperm. The fertilizer egg are attached to the abdominal eggs.
The eggs are acriated by the female by beating her pleoplod. The eggs are hatched into a larvae after few weeks. The larval undergo metamorphosis and in 50 days, the lerval pass through 12th stage & become juveniles.
The juveniles are the bottoms living. They migrate to the fresh water where they grow in adult thus, the sexually mature adults and the larvae lives  in the Escuaris. The juveniles & adults prawn grow in fresh water .

Culture Method:-

The culture of fresh water prawn in volue in the following steps:-

(A) Seed Collection
(B) Culture Prawn
(C) Feeding
(D) Fertilization
(E) Production
(F) Harvesting
(G) Marketing

(A) Seed collection:

The larvae post larvae and the juveniles are the seed of prown. The seed prown are obtain by the following 2 method:-

(I) Collection from the wild
(II) Collection from the brood female

(I) Collection from the Wild:-

The prawn seeds can be collected from the Estharies and the brakish water with the help of 5 meshed cloth bag with 2mm long and 1mm diameter.

(II) Collection from the brood female:-

The brood female are carring egg are collected from the Estuaries and brakish water prawn have has 10,000-30, 000 egg, the three such female are introduced as a rectangular tank called larvae tank containing 1% brackish water added with 15 ppm to 5 ppm formation. The female are kept here for 30min.
The egg hatch out in 4 to 5 days after 3day of hatching 50% water is remove from the larval tank fresh water added to the tank. The tank is well acriated and  the pH is maintain between 7.0 – 8.5 . The larval are feed into the noupilli fish egg and chopped earthworm.
The 10days old larval swim upside down, After 25- 28 day of hatching the larval swim normally and they are called post larval.
The post larval are transferred to the another concrete tank called holding tank . The holding tank is filled with fresh water the larvae are stock @500per Hector.
They are feed on navpilli and fish meal they are reared in the holding tank for 1month . After words. They are transported to the production.

Culture Practice:-

Fresh water prawn are culture in the following method:-

(I) Pond Culture
(II) Polly Culture
(III) Intensive Culture
(IV) Batch Culture
(V) Continerus Culture
(VI) Integrated Prawn Culture
(VII) Pokhali Culture

(I) Pond Culture:-

Rearing fresh water prawn in pond is called pond culture. The pond use for prawn culture are called production pond. Production pond are small earther pond of 0.2 Hector to 1 Hector size. The depth should be less than 1meter . The ponds of the pond may be planted of the banana, papaya. The mulet and out let are screen by 5 mesh nylon clothes.
Palm leaves may be install in the pond here & there. They are use in hide outs for small prawn. The prawn are fertilise with 200kg per Hector cowdog and 25kg per Hector of sulpher phosphate. The prawn arefed with supplementary feed such as rice, vegetables, animal waste etc. QuickTime is added @100kg per Hector.

(II) Poly culture:-

Poly culture is the culture of fresh water prawn with Catla, Rohu, Grass crap, Silver crap etc. The faccal method of fish a good source of food for prawn in poly culture the yield of prown less compair to fish yields.

(III) Intensive culture:-

Producing of large quantities of prawn in small area by stocking high density, concentrating labour recirculating of water, artificial feeding and manuring is called intensive culture. Culture of process in a pond in a intestine culture.

(IV) Batch Culture:-

In batch culture the pond is stocked twice in a year and two crop are made the pond is stocked into post larvae and after six month they entire prawn crops are Harrested. In batch culture the prawn grow to 20 grams to 60 grams.

(V) Continuous  Culture:-

In Continuous Culture, the pond is used continuously for culture for period of 1 to 5years . Harvesting is done continuously for 4-9 month the Pond is drain & trian after 5yr. The production range is 2000kg per Hector ,per year year 400kg per Hector.

(VI) Sewage Fed Prawn Culture:-

Prawn are culture in a paddy field fed with sewage water in this field. The yield of prawn was much high compair that fed with Normal water.

(VII) Integrated Prawn Culture:-

Prawn in culture with paddy & other fishes is called integrated prawn culture.

(VIII) Pokkali Culture:-

Giant prawn can be culture in Pokkali paddy field in kerala. Thay are culture after paddy harvest in the low saline period after Harvested prawn are stocked and reared for about 4month with supplementary feeding.

(C) Feeding:-

Fresh water prawn in an omnivor It feed on living organism vegetables Matter dead organism matter.
Artificial fed is given in the form of fresh fish mollusca  pig dung, broken rice food, Animal parm weast etc.
The artificial feed is given once in 3day @ of 5% – 10% of body weight.

(D) Fertilization:-

The stacking pond is fertilizer by organic manure and inorganic fertilizer which are –
(i)Cow dung 200kg per Hector
(ii) Super phosphate 25kg per Hector

(E) Production:-

Giant prawn is graw to maximum length of 32c.m and weight of 200gm.The production rate in the prawn culture is 400kg per Hector per year.
The production of polly culture is 0.5 to one per Hector per year. Continuous culture is yield 200kg.

Harvesting :-

It is done by pulling egg science net. Core should be taken to be sure that scince net reach to the bottom of the pond due to large  male prawn may avoid net by burrowing in circular breeding depression they build.

Marketing:-

Fresh water prawn can be harvested when there is high demand of prawn. They can be shoved alive. They are be proceeds & stored.

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