Page 12 - 240 introduction to fisheries and aquaculture tecnologies-azam

Introduction to Fisheries and Aquaculture Technologies

2. Management of Carp Nursery

01. Contact division/person/unit Freshwater Station, Bangladesh Fisheries Research
Institute, Mymensingh.
02. Location of application Allover the country in ponds of preferably 5-25
decimals with 1 m depth of water and are not inundated
by the flood.
03. Key characteristics of the a. Single and double stage primary and secondary
technology methods of nursing carp seed.
b. Production of quality carp frylfingerlings.
c. Significant higher rates of growth and survival.
d. High economic profit.
e. Suitable for both seasonal and perennial ponds.
04. Production guidelines
Land selection a. Land should not be flood prone.
b. Soil texture should be clay-loamy.
Pond preparation a. Cleaning of weeds.
b. Eradication of predators/weed- fishes.
c. Pond drying.
d. Liming @ 1.0 kg/dec.
e. Manuring (Cowdung) @ 10 kg/dec.
f. Aquatic insect control by using dipterax @ 1 ppm.
Stocking a. Single stage nursing: @ 5 to 109 spawn/decimal.
b. Primary nursing: @ 50 to 100 g spawn/decimal.
c. Secondary nursing: @ 3;000 to 4,000 fry/decimal.
Feeding Rice bran and mustard oilcake (I :I).
a. Single stage: @IOtimes of initial body weight.
b. Primary nursing : @ 3 to 5 times of initial body
weight.
Secondary nursing: @ 8 to 12 kg/I 00,000 fry.
Fertilization Cowdung @ 4-6 kg/decll 0 days (fertilizer should be
applied depending on colour of pond water stop
fertilization if algal bloom appear.
Production yield single stage Fingerlings : Survival @ 60% with a length of 5-7
nursing cm/2 months rate of actual yield to be mentioned.
Primary nursing:
Fry : Survival @ 70% with a length of 0.8 to 2.54
cm/21 days.
Secondary nursing:
Fingerlings: Survival @ 80% with a length of 7.62
cm/2 months.

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