Hypoxia, but Not an Electrolyte-Imbalanced Diet, Reduces Feed Intake, Growth and Oxygen Consumption in Rainbow Trout ( Oncorhynchus Mykiss )
| Autor: | Johan W. Schrama, Inge Geurden, Leonardo J. Magnoni, Patrick Prunet, Rodrigo O. A. Ozório, Isabelle Leguen, Ep H. Eding |
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| Přispěvatelé: | Laboratoire de Physiologie et Génomique des Poissons (LPGP), Institut National de la Recherche Agronomique (INRA)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Nutrition, Métabolisme, Aquaculture (NuMéA), Institut National de la Recherche Agronomique (INRA)-Université de Pau et des Pays de l'Adour (UPPA), Aquaculture and Fisheries Group, Wageningen Institute of Animal Science, The aquatic metabolic unit used in this study was cofounded by The Netherlands Organization for Scientific Research (code 805-34.025). The present study was funded by the EU-FP7 project AQUAEXCEL (262336). L.J. Magnoni is currently supported by a FCT research position with exploratory grant IF/01314/2014/CP1231/CT0001 from Portugal., European Project: 262336,EC:FP7:INFRA,FP7-INFRASTRUCTURES-2010-1,AQUAEXCEL(2011), Interdisciplinary Centre of Marine and Environmental Research [Matosinhos, Portugal] (CIIMAR), Universidade do Porto = University of Porto, Instituto de Investigaciones Biotecnológicas [San Martín] (IIB-INTECH), Consejo Nacional de Investigaciones Científicas y Técnicas [Buenos Aires] (CONICET)-Universidad Nacional de San Martin (UNSAM), Wageningen University and Research [Wageningen] (WUR), Instituto de Ciências Biomédicas de Abel Salazar (ICBAS) |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
030110 physiology
0301 basic medicine Water-Electrolyte Imbalance Energy balance lcsh:Medicine oxygène dissous Aquaculture 7. Clean energy Eating Nutrient Aquaculture and Fisheries Hypoxia lcsh:Science Animal biology Multidisciplinary biology Aquacultuur en Visserij Chemistry [SDV.BA]Life Sciences [q-bio]/Animal biology Hypoxia (environmental) Thermogenesis Water-Electrolyte Balance prise alimentaire Trout Oncorhynchus mykiss Body Composition consommation d'oxygène Animal feed Article 03 medical and health sciences Oxygen Consumption Animal science Biologie animale Animals Life Science Dry matter 14. Life underwater business.industry Body Weight lcsh:R Nutritional Requirements hypoxie biology.organism_classification croissance Animal Feed électrolyte 030104 developmental biology WIAS lcsh:Q Rainbow trout Energy Metabolism business |
| Zdroj: | Scientific Reports Scientific Reports, Nature Publishing Group, 2018, 8 (1), pp.4965. ⟨10.1038/s41598-018-23352-z⟩ Scientific Reports, Vol 8, Iss 1, Pp 1-14 (2018) Scientific Reports 8 (2018) 1 Scientific Reports, 8(1) Scientific Reports 1 (8), 14 p.. (2018) |
| ISSN: | 2045-2322 |
| DOI: | 10.1038/s41598-018-23352-z⟩ |
| Popis: | Oxygen limitation and dietary imbalances are key aspects influencing feed intake (FI) and growth performance in cultured fish. This study investigated the combined effects of hypoxia and dietary electrolyte balance on the growth performance, body composition and nutrient utilization in a rainbow trout (Oncorhynchus mykiss) isogenic line. Fish were fed ad libitum two experimental diets: electrolyte-balanced or -imbalanced diets (DEB 200 or 700 mEq kg−1, respectively) and exposed to normoxia or hypoxia (7.9 or 4.5 mg O2 l−1, respectively) for 42 days. DEB did not affect FI, growth performance or body composition. Nevertheless, hypoxia had a negative impact, reducing FI (6%), growth rate (8%), oxygen consumption (19%), energy (5%) and lipid (42%) contents. Digestible energy intake and heat production were higher in normoxic fish (40% and 23%, respectively), retaining 64% more energy in lipid or protein. Hypoxia reduced the apparent digestibility of dry matter, ash, protein, lipid, carbohydrates and energy. Trout fed DEB 700 diet were energetically less efficient, reflected in higher heat production and energy requirements for maintenance. FI was inhibited by low dissolved oxygen levels, but not by electrolyte-imbalanced diet, in spite of the higher energy requirements for maintenance. This study highlights the importance that dietary-electrolyte content and DO levels have on energy balance and growth performance when fish are fed to satiation. |
| Databáze: | OpenAIRE |
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