02589cas a2200241 a 450000500170000000800410001703500150005810000180007324500700009126000520016130000100021349000270022350001400025050200570039052015610044765000440200870000350205270000450208770000440213271000470217681000590222385600650228220260818094652.0111005s1990    th uu|m rtt   0|  a1eng d  a.b100724331 aPurba, Sirman13aAn economic study of fry production systems in Northeast Thailand  aBangkok :bAsian Institute of Technology,c1990  a89 p.1 aThesis ;vno. AE-90-45  aA thesis submitted in partial fulfilment of the requirements of the degree of Master of Science, School of Environment, and Development  aThesis (M.Sc.) - Asian Institute of Technology, 1990  aThe objective of the study is to describe the economic  performance of freshwater fish seed hatcheries, to describe  the variability among the fry producers and to find out input output relationship . The market s hare of the small, medium,  and large private and government hatcheries will also be  described .  A cross-sectional survey was conducted covering 8  provinces in Northeast Thailand and a total of 67 private  hatcheries. The operator of small , medium and large hatcheries  were interviewed u sing an open type of questionnaire to obtain  the data on economic performance and productivity.  The results showed that small hatcheries supplied 7% fry  to t he market, the medium and the large supplied 27% a nd 62%  respectively, while the government hatcheries supplied only 4%  of freshwater fish seed to the market.  There are 5 factors that can be used to describe the  variability among the private hatcheries which are size of the  hatcheries, access to water, location, market dimension and  experience, and it was found out that size of the hatcheries  is the most responsible factors in explaining the variability  among the fry producers. The result indicated that, as the  farm size increases the productivity is also increased.  Ten types of input variables . have been identified, out of  10 only 3 input variables which are labor, manure, and energy,  have significant effect in explaining the output. The  efficiency of using input specific to location and farm size  can be computed by using the Cobb- Douglas types of function.  0aFish hatcherieszThailand, Northeastern1 aWaibel, Hermann, eChairperson1 aLittle, David C.,eExamination Committee1 aDemaine, Harvey,eExamination Committee2 aAustralian Government, eScholarship Donor2 aAsian Institute of Technology.tThesis ;vno. AE-90-45  3Full-Textuhttp://203.159.5.9/ait-thesis/detail.php?q=B18287