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DocumentOther documentPreliminary report on Air Transport of Live Fish in Sealed Tins Under Oxygen Pressure 1951
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No Thumbnail AvailableProjectProgramme / project reportPreliminary results in the establishment of private tilapia fingerling producers in Western Kenya with some considerations for the future 1995
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No results found.Otieno, Z., and D. Campbell., 1995. Preliminary Results in the Establishment of Private Tilapia Fingerling Producers in Western Kenya with some Considerations for the Future. KEN/86/027 Field Document No. 3. FAO. The initial results from training 16 small scale rural fish farmers in production techniques of fingerlings of Oreochromis niloticus, or tilapia, are analyzed. Over 15 months, the farmers produced and sold 46 900 tilapia fingerlings to other farmers, however none of the trained farmer s adapted the techniques they were trained in. This was due largely to the lack of a consistant, reliable market for the fingerlings produced. The paper then analyses the steps that need to be taken in the future; assistance in marketing, on-farm training, the introduction of all-male tilapia farming, and poly-culture with Clarias gariepinus which should create more of a steady demand for tilapia fingerlings. The course syllabus for the farmers is given in an appendix. -
No Thumbnail AvailableProjectProgramme / project reportThe effects of paddlewheel aeration and stocking density on water quality and production of Macrobrachium rosenbergii (de Man) under monoculture system
Establishment of a Network of Aquaculture Centres in Asia
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No results found.The effects of aeration and stocking density on water quality and production of Macrobrachium rosenbergii were examined in six 0.54 ha ponds in Nakhon Pathom province, Thailand, during a grow-out period of eight months. The experiment comprised three treatments; T 1) 20 prawn/m2 stocking density with aeration, (T1), 2) 20 prawn/m2 stocking density without aeration (T2), 3) 10 prawns/m2 stocking density without aeration (T3). The ponds of treatment 1 were subjected to the aeration by means of ele ctric-powered paddlewheel aerators, after 3-months of stocking. Prawns were fed a formulated pellet feed once a day approximately at the rate of 5% of body weight. Prawns were partially harvested 3 times before total harvest. In all the ponds, the survival rates were very low (T1=18%, T2=15%, T3=18%). Because of the heavy mortality occurred during the grow-out period, much desired data could not be collected. However, when the collected data were statistically analyzed no significant differe nces were observed between the treatments with and without aeration or with varying stocking density on water quality and survival rate. Production was low in low density (551 kg/ha) compared to the high density (876–894 kg/ha). Mortality occurred during the experimental period was mainly due to sudden falls of temperature, high rates of liming, and DO depletion. Oxygen depletion was resulted from phytoplankton blooms and their sudden die-offs due to heavy rainfalls. Paddlewheel aerator used, proved to be insufficient to raise the DO (water depth 1 meter) level at such time.
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LetterLetter from the Acting Secretary, Department of State to D. Lubin, Hotel Raleigh, Washington 1907
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No results found.Asks for Lubin’s written views on IIA. With reference number RRFNo. 548/30; T/L). -
LetterLetter from the Royal Hungarian Minister of Agriculture to Mr. David Lubin 1907
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No results found.This is the translation of the original letter Ref No. 7042/pres VII/I 1907 -
ReportThe International Institute of Agriculture and the dissemination of statistical information concerning the staples of agriculture 1905
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No results found.Paper for the International Statistical Congress, August 3, 1905, London. 1. draft