Lobster is a precious prawn. Many countries cultivate this prawn and earn a lot of foreign currency every year. We can cultivate this prawn and earn more. This is a freshwater prawn.
It looks slide green, brown or blackish. Slough (skin) of carapes minnow has 2 - 5 blackish lines widely. Rostrum is long and curved and upper and lower side becomes wrinkled. Number of wrinkles is 12 - 15 on upper side and 11 - 14 on lower side and for female lobster 12 -13 and 5 - 7 accordingly. The chest of lobster is wide. And legs are long. First and second pair of legs are tweezers. The second pair of leg of male lobster is longer than that of female lobster.
Selection of Ponds:
Lobster needs more Oxygen so we have to select the pond attach to a river, canal or tube-well. Loamy clay, semi loamy clay and clayey soil are suitable for prawn cultivation. Big trees are not allowed beside the pond because pond needs much sun light. The pond area should be 10 – 100 centuries of land and 1 – 1.5 meter deep.
At first we have to dry the pond as a result all unexpected fishes will die. This destroys the harmful gases and germs. We can use 3 gm Rotenal for every 3 cubic meters of water if we can’t dry the pond. Then we have to use 1 kg of lime for per century of land. We have to use 5 kg cow dung or 3 kg chicken faeces, 100 gm UREA, 50 gm TSP and 20 gm MP for 5 – 7 days later after using lime for every centuries of land. Next day we should plough the land slightly in order to pass through harmful gases.
We have to leave carp in the pond after 5 – 7 days when water is slightly green. Generally 10,000 carps can leave in 100 centuries of pond area. Food Delivery: The production of prawn depends on food management. Ingredients Quantity (gm) Rice dust/ wheat husk 500 Mustard cake 150 Dried fish powder/ fish meal 250 Snail-oyster outer covering powder 95 Salt 3 Vitamins mixer 2 Total 100 Use of food: We have to supply food 4 percent of total fish body weight in the pond. Food should in the afternoon. We should supply food for 1000 carps per day according to age are as follows. Carps age Food quantity (gm) First month 15 Second month 75 Third month 250 Fourth month 400 Fifth month 1000 Sixth month 2000 Seventh month 2500 - 3000 Use of Fertilizer: In order to supply natural in the pond we should add fertilizer with supplementary food. For every two weeks on acres of pond needs 15 cow dung. 6 kg UREA, 2.5 kg TSP and 1 kg MP. Except UREA all the fertilizers should wet for 12 hours with triple portion of water. It should mixed properly and scatter those fertilizers 2 - 3 hours after sunrise.
Lobster cast-off skin at every growing stage of life. They become week when cast-off skin. At that time they can be attacked by another aquatic animals. For reason we should keep down dry tree branches without leaves or bamboo branches where they can take shelter.
Collection and Marketing:
Generally lobster become in full growth within 6 - 7 months. When the weight of 10 - 15 lobster to 1 kg then we should collect them with net. We should collect big sized lobster only. New moon and full moon are suitable times for lobster collection. We have sell lobster as soon as possible otherwise freeze with ice.
If we cultivate in this scientific method we can produce 8 - 10 kg of lobsters in every hundreds of land.