Page 30 - 240 introduction to fisheries and aquaculture tecnologies-azam
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Introduction to Fisheries and Aquaculture Technologies
18. Prawn Seed Production in Backyard Hatchery
01. Contact division/person/unit Freshwater Station, Bangladesh Fisheries Research
Institute, Mymensingh.
02. Location of application All over the country.
03. Key characteristics of the a. Prawn seed production in the backyard of the house.
technology
b. Single unit of hatchery can be used 4-5 years.
c. Easy to transfer from one place to another.
d. Needs minimum investment and gives high profits.
04. Production guidelines a. A plastic drum of 200-250L is converted to act as
biofilter.
b. 4-5 cemented rearing tanks of 200 -250 liters capacity
can be filled up with water through such biofilter.
c. A 0.5-1.0 HP vortex type air blower is provided to
aerate the cisterns.
d. Saline water of 10-12 ppt is needed for prawn rearing
unit.
e. 20,000-25,000 larvae can be produced in a single
cycle.
f. About 3 cycles per season can easily be obtained.
Benefit and cost involvement Total cost for single hatchery unit is Tk. 35,000
Gross income per season Tk. 60,000-70,000
Net income per season Tk. 30,000
05. Risk involvement and a. Theft of brood prawn should be checked.
management in adopting the
b. Pond management needs to be done for brood stock.
technology
06. Impact of environment Helps in conservation of biodiversity.
07. Procedure of transfer a. Installment of backyard hatchery at farmers level in
two different regions Mymensingh, Bogra of
Bangladesh.
b. Organizing farmers through training and
demonstration.
c. Extension with the help of relevant public extension
agencies, NGOs etc.
08. Expected outcome a. Availability of prawn larvae for stocking.
b. Create income generation.
09. Recommendations a. Availability of sea water should be ensured.
b. Demonstration of the technology is needed.
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