Page 17 - 240 introduction to fisheries and aquaculture tecnologies-azam
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Introduction to Fisheries and Aquaculture Technologies
Stocking a. 5-7 days after liming and fertilization, ponds can be
stocked for mono-culture with 50-70
fingerlings/decimal in case of semi-intensive culture
but such density can be increased up to 120-150
fingerlings/decimal in case of intensive culture system.
b. In case of polyculture stocking density per decimal
should be as follows: pangas 20-22; silver carp 8-10;
catla 5-6; ruhu 10-12.
Feeding a. For semi-intensive mono or polyculture the fish can be
fed @ 2-3% per estimated body weight. The
formulation of feed is as follows: Oilcake 30%; Rice
bran 30%.
b. For intensive culture the stocked fish can be fed with
pelleted fish feed containing 30-35% crude protein.
Expected production a. 25-30 kg fish/dec can be produced in semi-intensive
mono or polyculture system.
b. 80-120 kg fish/dec can be produced in intensive mono-
culture system.
05. Risk involvement and a. Flood.
management in adopting the b. Theft of fish.
technology
06. Impact of environment As the fish is not carnivoric in nature it may not have
severe effect on environment.
07. Procedure of technology This technology can be transferred through
transfer a. Relevant public agencies.
b. Farmers training and demonstration.
c. NGO's involvement.
08. Expected outcome a. Household nutrition, income and as a whole national
fish production will be increased.
b. It will also create employment opportunity for rural
unemployed youth and women/housewives.
09. Recommendations a. Training should be conducted by extension agencies
and NGOs to improve technical knowledge of farmers.
b. Mass seed production and supply of desirable size of
fingerlings need to be ensured by the private
hatchery/nursery operators to rural farmers.
c. BFRf and DoF need to maintain a strong liaison to
disseminate the technology.
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