Page 19 - 240 introduction to fisheries and aquaculture tecnologies-azam
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Introduction to Fisheries and Aquaculture Technologies
8. Culture of Silver Barb (Rajpunti) in Seasonal Ponds
o I. Contact division/person/unit Freshwater Station, Bangladesh Fisheries Research
Institute, Mymensingh.
02. Location of application Seasonal ponds and ditches all over the country.
03. Key characteristics of the a. Suitable for seasonal ponds and rice fields.
technology
b. Require low inputs/labours for culture.
c. Fish can attain marketable size within 4-5 months.
d. Very tasty fish.
e. High market value.
04. Production guidelines
Pond preparation a. Dyke repairing.
b. Liming @ 1.0 to 1.5 kg/dec.
c. Cowdung @ 4 kg/dec.
Stocking a. Density @ 65/dec (16,000/ha).
b. Weight 6 to 8 g.
Feeding a. Rice bran @ 5 to 6% of body weight of fish.
b. Duck weed if available.
Fertilization Cowdung @ 4 to 5 kg/dec/IS days.
ProductionlYield 7 to 8 kg/dec/6 months (1800 to 2000kg/ha/6
months).
Net income Tk. 70,000 /ha//6 months.
05. Risk involvement and a. Protection from disease.
management in adopting the
b. Protection from flood.
technology
c. Vigil against theft of fish.
06. Impact of environment No adverse effects of carp spawn rearing on the
aquatic/environment have been recorded so far.
07. Procedure of transfer The technology can be transferred through relevant
public extension agencies and NGOs. Training and
demonstrations are important for the purpose.
08. Expected outcome Household nutrition, income and national fish
production as a whole will be increased. It will also
create employment opportunity for rural unemployed
youth and women/housewives.
09. Recommendations a. Training to improve technical knowledge of farmers.
b. Demonstration ponds should be set up in different
areas.
c. Production of rajpunti fingerlings in rural areas to
meet up the demand of seeds in times.
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