Comparative life cycle assessment (LCA) of raising rainbow trout (Oncorhynchus mykiss) in different production systems |
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| Institution: | 1. UR 03AGRO1 Ecosystèmes et Ressources Aquatiques, Institut National Agronomique de Tunisie (INAT), Université de Carthage, 43 Avenue Charles Nicolle, 1082 Tunis, Tunisia;2. UMR 6539 Laboratoire des Sciences de l''Environnement Marin (CNRS/UBO/IRD/Ifremer), Institut Universitaire Européen de la Mer (IUEM), Technopôle Brest-Iroise, Rue Dumont d''Urville, 29280 Plouzané, France;3. UMR 1069, Sol Agro et hydrosystème Spatialisation, Institut National de la Recherche Agronomique (INRA), 65 rue de Saint Brieuc, CS 84215, 35042 Rennes Cedex, France;4. UMR 8187 LOG, Laboratoire d''Océanologie et de Géosciences, Université du Littoral Côte d''Opale, 32 avenue Foch, 62930 Wimereux, France;1. INRA, UR1037 Fish Physiology and Genomics, F-35000 Rennes, France;2. INRA, UE937 Pisciculture expérimentale des Monts d''Arrée, F-29450 Sizun, France;1. WorldFish, Jalan Batu Maung, Batu Maung, 11960 Bayan Lepas, Penang, Malaysia;2. Stockholm Resilience Centre, Stockholm University, Kräftriket 2B, 114 19 Stockholm, Sweden;3. WorldFish, 18 (B) Marashly St., 4th Floor, Apt. # 17, Zamalek, 11211 Cairo, Egypt;1. Aquatic Production Systems, Natural Resources Institute Finland (Luke), Survontie 9A, FI-40500 Jyväskylä, Finland;2. Animal Nutrition, Natural Resources Institute Finland (Luke), Tietotie 2 C, 31600 Jokioinen, Finland;3. Genomics and Breeding, Natural Resources Institute Finland (Luke), Myllytie 1, 31600 Jokioinen, Finland |
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| Abstract: | The production of rainbow trout (Oncorhynchus mykiss Walbaum 1792) is practiced in different production systems including extensive system (ES), intensive system (IS) and recirculating aquaculture systems (RAS). These production systems are different in their quantitative requirements of resource utilization and subsequent output and emissions that impact the environment. In this paper, consequential life cycle assessment (LCA) is used to analyze the environmental impact of rainbow trout production using these production systems in an attempt to determine the relative performances and identify options for future improvements. The life cycle impact assessment (LCIA) indicate that impact from four impact categories chosen, RAS showed the largest impact in global warming (GWP), acidification (AP) and land competition (LC), while its impact on eutrophication (EP) and water-use was the lowest relative to ES and IS. This signified that while RAS has the capability to reduce impacts in the EP category by avoiding water emissions, the increased use of energy for water filtration and reuse increases impact through global emissions. However, sensitivity analysis revealed that RAS has the potential to reduce the overall impact when using a marginal energy source based on wind power as compared to ES and IS. In conclusion, impacts which are specific to aquaculture need to be considered in LCA to draw comprehensive analysis of the impacts. In addition, identification of the underlying problems of the different impacts is important in finding solution leading to sustainability of aquaculture. |
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