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Tilapia Aquaculture – An Overview: Selection of systems – Ponds, Tanks, Raceways, Cages Kevin Fitzsimmons University of Arizona, Professor World Aquaculture Society, Immediate Past-President American Tilapia Association, Sec./Tres. Pablo Gonzalez Alanis Universidad Autonoma de Tamaulipas, Professor World Aquaculture Society, Student Liaison Program Coordinator, Aquaculture TIES Hermosillo, Son. Mexico Dec. 2, 2005
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Tilapia aquaculture F Where will you grow your tilapia? F Legal restrictions? F Environmental restrictions? (cold, birds, discharge) F Water source (volume, quality, temperature) F Other uses of water (irrigation, hydroponics, recreation)
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Tilapia in ponds F Extensive ponds
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Semi-intensive ponds
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Pond culture to crop irrigation
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Tilapia production in outside ponds with shrimp in covered ponds
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Fiberglass or concrete tanks?
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Large concrete tanks?
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Tilapia with hydroponics
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Tilapia-shrimp polyculture farms (Eritrea)
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Irrigation canals / extensive raceways
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Semi-intensive Raceway Systems Raceways in Arizona Raceways in Mexico
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Intensive Raceway Systems (Brasil)
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Intensive RAS farms in buildings in cool climates (USA)
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Intensive farms with recirculation in greenhouses (USA)
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Multiple small cages Taal Lake, Philippines Irrigation Reservoir, Arizona Paulo Afonso Reservoir, Brasil
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Other small cages Nile Delta, Egypt All tilapia farms have dogs, even cage farms Shrimp Pond, Philippines Shrimp Pond, Thailand
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Large cage farms
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Impacts of tilapia aquaculture F Exotic species that has been widely introduced F Effluents from cage farms may contribute to eutrophication F Methytestosterone used in sex-reversal F Attracts birds F Discharge from desert farms should be used for irrigation
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For Sonora - Integration of aquaculture and agriculture F Water pH reduced from 8.3 to 8.0 F Added 19.7 kg/ha N to 45 kg/ha used in standard fertilization schedule.
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Results - Integration of aquaculture and agriculture F Contributed 2.6 kg/ha P to crop.
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Plant height with Fish Effluent, Standard Fertilizer and Well Water
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Technologies to reduce externalities (escapees) F Further increase domestication F Reduce survival rate of escapees F More red skin varieties
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Future global tilapia production
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