Production of exotic fish and Brazilian hybrids in similar conditions: Are there considerable differences of environmental performance?

摘要: Abstract In developing countries and tropical regions, earthen ponds have become an alternative for farming fish inland. Farmers usually restrict diet to compound feed, which is a relevant source of environmental impact. the conditions described above, motivation this study was evaluate impact developed with different species. We evaluated systems producing exotic Nile Tilapia (Oreochromis niloticus), local hybrid Patinga (Piaractus mesopotamicus x Piaractus brachypomus) Surubim (Pseudoplatystoma sp. Leiarius marmoratus). Species were bred separately, in same farm similar conditions. The also inspired by opportunity properly pinpointing most reasons explain variability performance among For goal, we used Life Cycle Assessment (LCA) technique, preparing our inventory collecting realistic data, on farm, restricting evaluation from cradle-to-farmgate. Distinctive many simulations literature, determined nitrogen (N) phosphorus (P) content feed bromatology Lab. To produce 1 ton live weight, performed considerably better than all categories evaluated. Compared Patinga, two categories: water dependence land occupation. No considerable differences observed between hybrids. global warming potential, acidification potential eutrophication production stages that contributed most. general, protein predominant Indeed, terrestrial animal co-products more embodied resources their tissue, due diversifying reasonably low conversion rates However, discussion spans towards trade-offs puzzling situation decision making. This includes tunneling waste aquaculture instead dumping it landfill, or increasing demand marine ingredients overbalancing some direction. At time, pathway sustainability relies finding managing genetic resource order improve rates, empower speed up production. sure, these tasks efforts meet nutrient requirements offer suitable composition. Overall, methodology presented can be compare demystify performances resources.