37 research outputs found

    Shrimp farming - a status review

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    The ever increasing demand for shrimp and the resultant pressure on the fishery has led to stagnation or fluctuation in the yield in recent years. Research and development activities carried out by the Central Marine Fisheries Research Institute aimed at improving shrimp production, harnessing both capture and culture fisheries, have yielded wealth of information over the past decades. The finding that the yield from the traditional practices of shrimp farming prevalent in India is only a fraction of what is actually possible from such fields has led to the proposition of the improved technology of selective farming of only the commercially more important species of shrimps ensuring improvement in the quality, quantity and profitability. Research undertaken by the CMFRI on culture system, shrimp seed resources including hatchery production of seed, shrimp feed formulation and farming trials have been helpful in developing suitable package of practices for the sustainable farming of shrimps. Extension machinery including publications, training programmes at operator, trainer level and field level extension programmes have been instrumental in taking the know how to the user community. Assessment of the prospects and problems of shrimp culture development has also been accomplished

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    Effects of the Piscicides, Mahua Oil Cake and Croton Seed on the Prawn Culture System

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    The present research programme envisages a comparative study of the effects of two piscicides of plant origin, viz., mahua oil cake, a derivative from the plant fig Iatifolia and croton seed, a product from the plant Croton tiglium. Although some reports on the effects of mahua oil cake and croton seed on fresh water pond culture systems are available, information on their effect on brackishwater culture systems are rather scanty This was the guiding principle for launching the present study It is hoped that the findings will enable aquaculturists to make use of the piscicides in a more rational and efficient way, and will go a long way towards realising the maximum return from culture systems without hampering the environment. The thesis is presented in seven chapters such as Introduction, Review of literature, Materials and Methods, Results, Discussion, Summary and Bibliograph

    Shrimp farming: problems and prospects- Winter School on Recent Advances in Breeding and Larviculture of Marine Finfish and Shellfish

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    Shrimps accounting for over 20% of the global trade in fish and fishery products and commanding a premium value have also been the mainstay of Indian marine products export trade. Frozen shrimp continued to be the largest item exported in terms of value with 59.02% of the total value of export during 2005-06. Around 60% of the volume of frozen shrimp exported was contributed by aquaculture. Shrimp farming provides direct employment to about 0.3 million people and ancillary units provide employment to 0.6-0.7 million people

    Prawn Farming

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    The traditional practice of prawn filtration prevalent in the low-lying brackishwater impoundments including the 'pokkali' fields adjoining the Vembanad Lake in Kerala has spread to other areas along the northern and southern regions of the State in recent years. Filtration is the method of trapping and holding the juveniles of prawns ascending along with the high tide in brackishwater impoundments and harvesting thern at periodical intervals. As per the 1991 statistics this traditional practice is prevalent in about 12,500 ha spread over the coastal areas of Kannur, Thrissur, Ernakulam, Alleppey, Kottayam and Kollam districts of Kerala state

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    The traditional practice of prawn filtration prevalent in the low-lying brackishwater impoundments including the 'pokkali' fields adjoining the Vembanad Lake in Kerala has spread to other areas along the northern and southern regions of the State in recent years. Filtration is the method of trapping and holding the juveniles of prawns ascending along with the high tide in brackishwater impoundments and harvesting thern at periodical intervals. As per the 1991 statistics this traditional practice is prevalent in about 12,500 ha spread over the coastal areas of Kannur, Thriasur, Ernakulam, Alleppey, Kottayam and Kollam districts of Kerala state

    Scientific prawn culture in homesteads тАФ A gainful self employment opportunity for coastal women

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    The role of women in aquaculture is relatively a new one which offers great scope for self-employment and serves as an additional income to the family. The concept of prawn culture in homestead water canals is developed keeping in view the generation of employment, need of alternative income for coastal population and maximum utilization of water resources available for increased production

    Guide to Prawn farming in Kerala

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    The development of coastal aquaculture and utilisation of brackishwater areas for productive purposes are receiving priority attention in our Fisheries Plan Schemes. Kerala has traditionally an established crop-cum-flsh culture system in the pokkali paddy fields of the Ernakulam and adjacent Districts. However, in general the yield of the pokkali paddy strain is low being 700-1000 kg/ha/harvest. Similarly the production of fish and prawn from wild stocking through tidal effects from these fields is also low, yielding hardly about 400-700 kg/ha/season depending upon the location and other parameters
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