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The fish were fed ad libitum on three isoproteic (52%), isolipidic (14%), and isoenergetic diets (21\u2009MJ\/kg), formulated to contain three different n\u22123\/n\u22126 ratios: a high (3.8), medium (2.5), or low (0.9) ratio. Fish grew from 9.5\u2009\u00b1\u20090.1\u2009g to 54.2\u2009\u00b1\u20090.7\u2009g in 12 weeks. Growth rate (2.2% BW\/day), voluntary feed intake (2.4\u2009\u00b1\u20090.1% BM\/day), feed conversion ratio (1.38\u2009\u00b1\u20090.05), and net protein utilization (27.5\u2009\u00b1\u20091.0%) did not vary among treatments. In contrast, body lipid content and lipid deposition efficiency were significantly reduced in fish fed low n\u22123\/n\u22126 ratio. Fish fed the highest n\u22123\/n\u22126 ratio showed the lowest hepatic glucose\u20106\u2010phosphate dehydrogenase (G6PD) activity (<jats:italic>p<\/jats:italic>\u2009=\u20090.02). The n\u22123\/n\u22126 ratio decreased, while DHA\/eicosapentaenoic acid (EPA) ratio increased significantly with decreasing dietary n\u22123\/n\u22126 content. Among n\u22123 PUFA, the DHA and, particularly, the docosapentaenoic acid (DPA) showed the highest deposition rate both in muscle and liver. The lower deposition rate (&lt;1) of linoleic acid (LA) and linolenic acid (LNA) suggests that a reduction in dietary n\u22123\/n\u22126 ratio may stimulate their transport to the intermediary metabolism for energy production.<\/jats:p>","DOI":"10.1002\/ejlt.201100087","type":"journal-article","created":{"date-parts":[[2011,9,1]],"date-time":"2011-09-01T18:15:50Z","timestamp":1314900950000},"page":"1332-1341","update-policy":"http:\/\/dx.doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":34,"title":["Effects of dietary n\u22123\/n\u22126 ratio on lipid metabolism of gilthead seabream (<i>Sparus aurata<\/i>)"],"prefix":"10.1002","volume":"113","author":[{"given":"Narcisa M.","family":"Bandarra","sequence":"first","affiliation":[]},{"given":"Paulo","family":"Rema","sequence":"additional","affiliation":[]},{"given":"Irineu","family":"Batista","sequence":"additional","affiliation":[]},{"given":"Pedro","family":"Pous\u00e3o\u2010Ferreira","sequence":"additional","affiliation":[]},{"given":"Luisa M. 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