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Follow-up consultancy: shrimp culture development. Report

Shrimp Culture Development Project







Kungvankij, P. Jul 1991. Follow-up consultancy: shrimp culture development. Report. Rome (Italy). 22 p.


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    This report consists of two parts. The first part is a narrative report containing the findings made during field visits and possible course of action. The second part details the recommendation and technical drawings based upon the possible course of action. References to specific sections or technical drawings found in the second part are no longer made in the first part. The engineering designs provided in this report are indicative in nature and are prepared in such a manner as to contain su fficient information for experienced civil engineers to prepared detailed engineering designs.
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    The culture of the giant freshwater prawn (Macrobrachium rosenbergii de Man) in Cuba. Report of the first technical assessment mission, May 7th - 30th 1990 1990
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    The Cuban government wish to expand the tourist industry as a sorce of much needed foreign exchange. Opportunites to supply and support the industry are actively being sought and include the provision of fish and shellfish foods from fisheries and aquaculture to supply the hotel and restaurant enterprises throughout the designated tourist areas. The culture of the Giant Freshwater prawn (Macrobrachium rosenbergii) is one such Trials are being made with pond reared stock using three methods to improve breeding; i) eyestalk ablation; ii) photoperiod manipulation; iii) artificial insemination. In the hatchery larvae are fed algae followed by minced clam, squid, marine fish and Artemia but Nippai prepared feeds are also used. A nursery phase is employed lasting 30–40 days which takes the shrimp from 5–10 day old post-larvae to 0.5 to 1.0 g juveniles. Stocking rate is 100/sq m but trials, have been made with 1000–2000 in 70 t tanks. In the on-growing phase shrimp are stocked at 5/m2, feed is given at from 15 to 2.5% per day and salinity is 25%. Feed costs around 200–250 pesos per tonne and contains squid, shrimp meal (from processed P. schmitti caught at sea) and zeolite. Problems with unstable artificial feed are common. Production is around 400–500 kg/ha/cycle and at present there are 1.6 to 1.7 cycles/yr. Newness of the ponds, inexperience and climatic changes are constraints on production. Early trials with P. notialis were not encouraging as growth stopped at 6–8 g, howev er new trials may be undertaken.
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    Shrimp is a valuable aquatic food resource high in protein and commands good export markets/ It has become the main target commodity for aquafarming in recent years. Traditionally, shrimp fry are trapped and held in ponds and later collected by shrimp gatherers for stocking in grow-out ponds. With increasing demand for shrimp, supply of wild fry for the increasing number of shrimp farms has become insufficient and inconsistent. The breakthrough in the completion of the life cycle of commercial ly important shrimps in captivity, such as the tiger shrimp (Penaeus monodon), the Japanese kuruma ebi (P. japonicus), the eastern shrimp (P. orientalis) and the banana shrimp (P. indicus or P. merguiensis), has greatly enhanced mass production of shrimp fry under hatchery conditions. The excellent growth performance of these hatchery-bred fry in grow-out ponds strongly shows that the shrimp hatchery can answer the industry needs for ample supply of shrimp fry for farming. From many years of a ccumulated experience and research findings, the success of a shrimp hatchery depends on: the choice of a suitable site effectiveness and efficiency of the hatchery design experience of hatchery technicians efficiency of operational management

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