Improving the Technical and Economic Performance of Aquaculture: Perspective from Bio-Economic Model Public Deposited

http://ir.library.oregonstate.edu/concern/conference_proceedings_or_journals/6q182n047

Proceedings of the Eighteenth Biennial Conference of the International Institute of Fisheries Economics and Trade, held July 11-15, 2016 at Aberdeen Exhibition and Conference Center (AECC), Aberdeen, Scotland, UK.

Suggested Bibliographic Reference: Challenging New Frontiers in the Global Seafood Sector: Proceedings of the Eighteenth Biennial Conference of the International Institute of Fisheries Economics and Trade, July 11-15, 2016. Compiled by Stefani J. Evers and Ann L. Shriver. International Institute of Fisheries Economics and Trade (IIFET), Corvallis, 2016.

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  • Tilapia is the world's most popular aquaculture species farmed mostly in earthen ponds.  Experience in China (the largest tilapia farming country) is used to develop and calibrate a bio-economic model on intensive tilapia pond culture. The model is used to simulate the impacts of climate, technical and/or financial factors on farming performance and examine the performance of various farming arrangements under different conditions. The simulation results indicate that 1) an increase in feed price, an increase in mortality, or a decrease in fish price would significantly reduce the profitability and reduce the optimal harvesting size; whereas an increase in the price or cost of seed, labor, rent, electricity or water management would have smaller impacts on profitability; 2) considering the impact of water temperature on fish growth,  the profitability of a production cycle starting at the best timing could be twice as high as one starting at the worse timing; 3) given no price discrepancy against small size fish, harvesting at about 300g in 2-year-5-crop arrangements could increase the overall profitability by up to 50 percent compared to harvesting above 500g in 1-year-2-crop arrangements; 4) a two-tier farming system that separates nursing and outgrowing ponds could allow 1-year-3-crop arrangements that enhance profitability by up to nearly 90 percent compared to the 1-year-2-crop arrangements and by up to nearly 30 percent compared to the 2-year-5-crop arrangements. With more refined information on fish growth under different farming conditions, the model could become a decision-making tool for helping farmers design optimal farming arrangements.
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  • 0976343290

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