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Progress of Ricefield Fish Culture in Thailand

Year of publication 1962

Product type Document

Edition 1

Language English

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    Application of low-cost filtration systems to freshwater prawn culture in Thailand 1979
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    This working paper represents those parts of my consultants' report to FAO, for the period 20 August – 24 September 1979, which relate to the Programme for the Expansion of Freshwater Prawn Farming in Thailand (Project THA/75/008). Full details of all the techniques and units utilised can be found in an earlier report published by the South China Sea Fisheries Programmea. The primary reason for visiting Bangkok was to help in solving problems of unsatisfactory water in Macrobrachium hatchery s ystems. Methods of abstracting pre-filtered sea water from the natural bed were taught and had already been applied before the visit ended. The technique of using both Village Units, for primary filtration, and Mini-Units, for recirculation, in wholly artificial beds, was shown in Chacheongsao: in this case also a permanent source was created and this had been supplying clean water for some four days before the mission ended. Abstraction from insitu beds is clearly impossible on the vast Centr al Plain, where the canal's base usually consists of almost bottomless mud. For the numerous isolated communities who still take much of their household water from these canals it seems that the mini-Unit methods could bring much improved water at minimal cost. Throughout this region there are numerous fish ponds. While it can hardly be economic to filter the whole supply it seems that the general method described below under “Chacheongsao Fisheries Station” could well be used for that part of t he supply needed for the actual hatchery and the early fry stages, as well as for any sensitive species that might be kept.
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    A handbook of diseases of cultured Clarias (Pla Duk) in Thailand
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