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Effects of the dietary protein : lipid ratio on growth and nutrient utilization in gilthead seabream ( Sparus aurata L.)

1999; Wiley; Volume: 5; Issue: 3 Linguagem: Inglês

10.1046/j.1365-2095.1999.00107.x

1365-2095

Santinha, Medale, Corraze, Gomes,

Animal Nutrition and Physiology

Aquaculture NutritionVolume 5, Issue 3 p. 147-156 Effects of the dietary protein : lipid ratio on growth and nutrient utilization in gilthead seabream (Sparus aurata L.) Santinha, Santinha Instituto Ciencias Biomédicas ‘Abel Salazar’, Universidade do Porto, Porto, PortugalSearch for more papers by this author Medale, Medale Unite mixte INRA-IFREMER de Nutrition des Poissons, Station d’Hydrobiologie INRA, Saint Pée-sur-Nivelle, FranceSearch for more papers by this author Corraze, Corraze Instituto Ciencias Biomédicas ‘Abel Salazar’, Universidade do Porto, Porto, PortugalSearch for more papers by this author Gomes, Gomes Instituto Ciencias Biomédicas ‘Abel Salazar’, Universidade do Porto, Porto, PortugalSearch for more papers by this author Santinha, Santinha Instituto Ciencias Biomédicas ‘Abel Salazar’, Universidade do Porto, Porto, PortugalSearch for more papers by this author Medale, Medale Unite mixte INRA-IFREMER de Nutrition des Poissons, Station d’Hydrobiologie INRA, Saint Pée-sur-Nivelle, FranceSearch for more papers by this author Corraze, Corraze Instituto Ciencias Biomédicas ‘Abel Salazar’, Universidade do Porto, Porto, PortugalSearch for more papers by this author Gomes, Gomes Instituto Ciencias Biomédicas ‘Abel Salazar’, Universidade do Porto, Porto, PortugalSearch for more papers by this author First published: 24 December 2001 https://doi.org/10.1046/j.1365-2095.1999.00107.xCitations: 96 Gomes Instituto Ciencias Biomédicas ‘Abel Salazar’, Universidade do Porto, Porto, Portugal. Read 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 Abstract Gilthead seabream Sparus aurata L. (initial mean body weight: 42.5 g) were fed four experimental diets containing either 47 or 51% of dry matter (DM) as protein and either 15 or 21% as lipid for 12 weeks. Each diet was hand-distributed to triplicate groups of 60 fish, three times a day until satiation. The digestibility coefficients of the dietary components were determined using chromic oxide as a marker. The levels of protein or lipid in the diets did not affect the digestibility. Fish regulated their feed intake and attained the same weight at the end of the experiment. However, feed efficiency varied between diets, with best values obtained with both diets containing 21% lipid. When diets contained only 15% lipid, feed efficiency increased with dietary protein level. Nitrogen retention was significantly higher with high fat diets regardless of dietary protein level. Neutral lipid deposition was significantly higher in liver for diets rich in lipids. It was elevated in muscle only in fish fed the diet containing 47% protein and 21% lipid and this deposition in muscle contributed to a significant increase in body fat content. Phosphorus load to the environment, measured as percentage retention of ingested or digestible phosphorus, was significantly lower with both diets higher in lipids. References 1 Beamish, F.W.H. & Medland, T.E. (1986) Protein sparing effects in large rainbow trout, Oncorhynchus mykiss. Aquaculture, 55 , 35 42. 2 Cho, C.Y. & Kaushik, S.J. 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