Economic analysis of closed and open system intensive culture of black tiger shrimp (Penaeus monodon) in Thailand, crop year 1996/97
1999
Withan Chumma
Main objectives of this study were to analyze cost-benefit of production and compare economic efficiency of input used between the closed and open system intensive culture of black tiger shrimp by employing Cobb-Douglas production function. As for the cost-benefit analysis, the result has shown that on an average all of the closed system large farms have the greatest net return due to higher yield and price. The open system small farms receive the highest net return due to higher stocking density and proper care. The Cobb-Douglas production function analysis indicated that factors influencing productivity of these two systems were not significantly different, thus they were grouped together. The results showed that factors affecting black tiger shrimp yield were the number of fry, feed, other expenses, farm location and farm size. Holding the other factor constant, it was found that the farmer should be increase number of shrimp fry. Shrimp feed should be decreased in the Central, eastern South and western South while it should be increase in the East. Other expenses should be decreased in the Central and the eastern South while it should be increase in the East and western South.
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