CAGE CAGE FISH CULTURE
Bangladesh Bangladesh
This This brief outlines the basic construction method used in Bangladesh for fish cages. It provides a step by step guide on how to make them. Cage culture is one of the best options for women’s groups and non-resource base farmers to cultivate fish using open water or common pool resource (CPR) e.g. rivers and canals, for consumption and income generation. The River Erosion Project (REP) of Practical Action-Bangladesh used cage culture technology involving women in four sub-district of Gaibandha where 1m3 floating cage were used. A cage measuring 1 cubic meter, made of black polyethylene net, a bamboo frame, plastic floats, ropes - is used to culture around 200-300 fish for a period of 4 to 6 months and able to produce 20 to 30 kg fish. All cages have a top cover to prevent fish jumping and escaping and to avoid predation by birds. Cage materials and its costing: (for each 1m3 floating cage) Materials 1. Black Polyethylene net ( 2m height) 2. Bamboo pole/split ( 38 inches, 1m long) 3. Cod thread 4. Nylon thread 5. Float 6. Feeding tray 7. Iron pin Total ( 1 $= 70 taka) Amount/ pieces 15 feet 12 pieces 100 gm 100 gm 4 pieces 1 piece 100 gm Price ( taka) 14/foot 7 / piece 220/kg 120/kg 5/piece 35/piece 100/kg Total cost ( taka) 210.00 84.00 22.00 12.00 20.00 35.00 10.00 393.00
Practical Action, The Schumacher Centre, Bourton on Dunsmore, Rugby, Warwickshire, CV23 9QZ, UK T +44 (0)1926 634400 | F +44 (0)1926 634401 | E infoserv@practicalaction.org.uk | W www.practicalaction.org ___________________________________________________________________________________________________________ Practical Action is a registered charity and company limited by guarantee. Company Reg. No. 871954, England | Reg. Charity No.247257 | VAT No. 880 9924 76 | Patron HRH The Prince of Wales, KG, KT, GCB
Cage fish culture
Practical Action
Cage design / construction:
The sequential photographs show a low-cost fish cage being built.
12 pieces of bamboo stick / pole (each is 38 inches long and 2 inches wide/diameter) is required
12 pieces bamboo pole were joined through iron pin and make the cage frame. Each corner of the frame was bound tightly through thread to make it strong. Feeding tray was set at bottom site of the cage.
15 feet black polyethylene net were measured and cut.
Height wise net were pulling
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Cage fish culture
Practical Action
Then net were cut from the middle part of height and make it two part
Each part of net were equally divided into 3 parts and marked with thread.
One part of net was set on top and rest two side. Other part of net was cover the bottom and rest two side of cage
Then sewing the net tightly by cod thread and complete the cage Feeding tray were also sewing with net.
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Cage fish culture
Practical Action
One opening/mouth were made on the top of the cage for fingerling stocking or harvesting or feed application
Cage sewing by female
Float/ bottle were bound with the upper part of the cage, so that cage become floating after set in water
Series of cage were set through two bamboo pole in two end and with nylon thread
Bamboo pole Nylon thread Nylon thread Bamboo pole
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Cage fish culture
Practical Action
Further Reading
Small Scale Fish Farming Practical Action Technical Brief Fishing out the Gene Pool Practical Action Technical Brief Livelihood from Fishing A Le Sann Practical Action Publishing 1998 Fish Processing UNIFEM Practical Action Publishing 1993
This brief is based on a document written by Utpal Kumar Dutta of Practical Action Bangladesh. Practical Action The Schumacher Centre Bourton-on-Dunsmore Rugby, Warwickshire, CV23 9QZ United Kingdom Tel: +44 (0)1926 634400 Fax: +44 (0)1926 634401 E-mail: inforserv@practicalaction.org.uk Website: http://practicalaction.org/practicalanswers/
Practical Action is a development charity with a difference. We know the simplest ideas can have the most profound, life-changing effect on poor people across the world. For over 40 years, we have been working closely with some of the world’s poorest people - using simple technology to fight poverty and transform their lives for the better. We currently work in 15 countries in Africa, South Asia and Latin America.
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