Title: Optimum selenium levels in diets high in plant‐based feedstuffs for gilthead sea bream (<i>Sparus aurata</i>) fingerlings
Abstract: Aquaculture NutritionVolume 26, Issue 2 p. 579-589 ORIGINAL ARTICLE Optimum selenium levels in diets high in plant-based feedstuffs for gilthead sea bream (Sparus aurata) fingerlings David Domínguez, Corresponding Author David Domínguez [email protected] orcid.org/0000-0002-6434-2734 Grupo de Investigación en Acuicultura (GIA), Instituto Universitario ECOAQUA, Universidad de Las Palmas de Gran Canaria, Telde, Spain Correspondence David Domínguez Montesdeoca, Grupo de Investigación en Acuicultura (GIA), Ecoaqua Institute, University of Las Palmas de Gran Canaria, Crta. Taliarte s/n, 35214 Telde, Spain. Email: [email protected] for more papers by this authorZakarya Sehnine, Zakarya Sehnine Grupo de Investigación en Acuicultura (GIA), Instituto Universitario ECOAQUA, Universidad de Las Palmas de Gran Canaria, Telde, SpainSearch for more papers by this authorPedro Castro, Pedro Castro orcid.org/0000-0002-0395-899X Grupo de Investigación en Acuicultura (GIA), Instituto Universitario ECOAQUA, Universidad de Las Palmas de Gran Canaria, Telde, SpainSearch for more papers by this authorLidia Robaina, Lidia Robaina Grupo de Investigación en Acuicultura (GIA), Instituto Universitario ECOAQUA, Universidad de Las Palmas de Gran Canaria, Telde, SpainSearch for more papers by this authorRamon Fontanillas, Ramon Fontanillas Skretting Aquaculture Research Centre AS, Stavanger, NorwaySearch for more papers by this authorPhilip Antony Jesu Prabhu, Philip Antony Jesu Prabhu orcid.org/0000-0002-2839-0704 Fish Nutrition Program, Institute of Marine Research, Bergen, NorwaySearch for more papers by this authorMarisol Izquierdo, Marisol Izquierdo Grupo de Investigación en Acuicultura (GIA), Instituto Universitario ECOAQUA, Universidad de Las Palmas de Gran Canaria, Telde, SpainSearch for more papers by this author David Domínguez, Corresponding Author David Domínguez [email protected] orcid.org/0000-0002-6434-2734 Grupo de Investigación en Acuicultura (GIA), Instituto Universitario ECOAQUA, Universidad de Las Palmas de Gran Canaria, Telde, Spain Correspondence David Domínguez Montesdeoca, Grupo de Investigación en Acuicultura (GIA), Ecoaqua Institute, University of Las Palmas de Gran Canaria, Crta. Taliarte s/n, 35214 Telde, Spain. Email: [email protected] for more papers by this authorZakarya Sehnine, Zakarya Sehnine Grupo de Investigación en Acuicultura (GIA), Instituto Universitario ECOAQUA, Universidad de Las Palmas de Gran Canaria, Telde, SpainSearch for more papers by this authorPedro Castro, Pedro Castro orcid.org/0000-0002-0395-899X Grupo de Investigación en Acuicultura (GIA), Instituto Universitario ECOAQUA, Universidad de Las Palmas de Gran Canaria, Telde, SpainSearch for more papers by this authorLidia Robaina, Lidia Robaina Grupo de Investigación en Acuicultura (GIA), Instituto Universitario ECOAQUA, Universidad de Las Palmas de Gran Canaria, Telde, SpainSearch for more papers by this authorRamon Fontanillas, Ramon Fontanillas Skretting Aquaculture Research Centre AS, Stavanger, NorwaySearch for more papers by this authorPhilip Antony Jesu Prabhu, Philip Antony Jesu Prabhu orcid.org/0000-0002-2839-0704 Fish Nutrition Program, Institute of Marine Research, Bergen, NorwaySearch for more papers by this authorMarisol Izquierdo, Marisol Izquierdo Grupo de Investigación en Acuicultura (GIA), Instituto Universitario ECOAQUA, Universidad de Las Palmas de Gran Canaria, Telde, SpainSearch for more papers by this author First published: 01 December 2019 https://doi.org/10.1111/anu.13019Citations: 19Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Abstract Substitution of marine ingredients (FM-FO) by plant protein and oil sources can modify selenium (Se) levels in feeds. Se plays an important role in the antioxidative defence by forming part of selenoproteins. Se requirements of gilthead sea bream are not accurately determined; therefore, this study was conducted to define Se supplementation levels in low FM-FO practical diets for sea bream fingerlings. A plant-based diet containing 0.45 mg Se/kg diet was used as the basal diet. Four other diets were supplemented to contain 0.68, 0.86, 1.00 or 1.70 mg Se/kg diet, supplied as sodium selenite. Sea bream, weighing 12.6 ± 1.4 g, were distributed in triplicate groups per diet and fed for 42 days. Se supplementation up to 1.00 mg Se/kg significantly improved the growth of sea bream, whereas further increase up to 1.70 mg Se/kg diet reduced growth. The results of this study suggest that the optimum dietary levels of sodium selenite in diets with low FM-FO with basal levels of 0.45 mg Se/kg are around 0.94 mg Se/kg to promote growth of gilthead sea bream juveniles. On the contrary, dietary levels of 1.70 mg Se/kg were found to be excessive and caused growth reduction, increased catalase expression and hydropic degeneration in the liver. CONFLICT OF INTEREST R. Fontanillas is an employee of Skretting AS, Stavanger, Norway. Open Research DATA AVAILABILITY STATEMENT All relevant data are within the paper. Citing Literature Volume26, Issue2April 2020Pages 579-589 RelatedInformation