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South China Sea fisheries development and coordinating programme. Follow-up programmes on economics of aquaculture in the south China Sea region, Regional








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    South China Sea fisheries development and coordinating programme. Engineering aspects of brackish water aquaculture in the south China Sea region, Indonesia, Malaysia, Philippines, Singapore, Thailand, Hong Kong 1975
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    . Present state. It can be said that the engineering aspect of brackish water aquaculture industry in the region has attained a level commensurate with the present capabilities of the countries where it is now practiced. In general, as a physical unit, existing projects are hardly adequate. Aquaculture farm engineering as an art (as perhaps at this stage it is more of an art than a technology) has been a product of long development and experience by the people in the industry themselves or witho ut the contribution from organized research. It is only within very recent years that a limited amount of attention is being called to the importance of this phase of the industry. 2. Manpower and equipment. Due to the circumstances cited above the industry has not been utilizing much of labour-saving or mechanized equipment both for operation and construction. At present the industry is largely labour-intensive and depends on simple locally-devised equipment which have been developed through the years. Likewise the specialized manpower for construction and maintenance is localized and often very limited so that in many potential focal points of development this can be a major constraint. 3. Projects as engineering units. The physical make-up of brackish water aquaculture projects in the region are in general weak and inadequate as engineering structures, many of them are not geared to the production management for which they are established. For extensive type production in many d eveloping areas of the region, present projects have served for the conduct of subsistence level operation where constant maintenance is being carried out. However, to maximize production; project design, proper layout and adequate construction specifications, etc. are required.
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    South China Sea fisheries development and coordinating programme. Economics of various management techniques for pond culture of finfish, Regional review 1976
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    On a worldwide basis, pond culture of finfish produces about 75 percent of the production in weight and utilizes about 90 percent of the area devo ed to aquaculture. It is estimated that it has stimulated a capital exchange investment of about US$3 500 million. The potential for increasing aquaculture production through pond culture of finfish is high. An analysis is made of the economics of finfish pond culture in order to: (i) establish improved management practices that will make the indust ry more profitable; (ii) guide the formulation of policies and programmes which affect development of the aquaculture industry. The species considered in this study are: milkfish, common carp, Chinese carp, Indian major carps, catfishes (channel, Clarias, pangasid), tilapia, grey mullet, eel and rainbow trout. The profitability of the use of monoculture versus polyculture and the use of extensive versus intensive techniques are explored with respect to a number of these species.
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