|Appears in Collections:||Aquaculture Journal Articles|
|Peer Review Status:||Refereed|
|Title:||High levels of vegetable oils in plant protein-rich diets fed to gilthead sea bream (Sparus aurata L.): growth performance, muscle fatty acid profiles and histological alterations of target tissues|
Navarro, Juan Carlos
Bell, J Gordon
|Keywords:||Essential fatty acids|
Lipoid liver disease
|Citation:||Benedito-Palos L, Navarro JC, Sitja-Bobadillo A, Bell JG, Kaushik S & Perez-Sanchez J (2008) High levels of vegetable oils in plant protein-rich diets fed to gilthead sea bream (Sparus aurata L.): growth performance, muscle fatty acid profiles and histological alterations of target tissues, British Journal of Nutrition, 100 (5), pp. 992-1003.|
|Abstract:||The feasibility of fish oil (FO) replacement by vegetable oils (VO) was investigated in gilthead sea bream (Sparus aurata L.) in a growth trial conducted for the duration of 8 months. Four isolipidic and isoproteic diets rich in plant proteins were supplemented with l-lysine (0ú55 %) and soya lecithin (1 %). Added oil was either FO (control) or a blend of VO, replacing 33 % (33VO diet), 66 % (66VO diet) and 100 % (VO diet) of FO. No detrimental effects on growth performance were found with the partial FO replacement, but feed intake and growth rates were reduced by about 10 % in fish fed the VO diet. The replacement strategy did not damage the intestinal epithelium, and massive accumulation of lipid droplets was not found within enterocytes. All fish showed fatty livers, but signs of lipoid liver disease were only found in fish fed the VO diet. Muscle fatty acid profiles of total lipids reflected the diet composition with a selective incorporation of unsaturated fatty acids in polar lipids. The robustness of the phospholipid fatty acid profile when essential fatty acid requirements were theoretically covered by the diet was evidenced by multivariate principal components analysis in fish fed control, 33VO and 66VO diets.|
|Rights:||Publisher policy allows this work to be made available in this repository. Published in British Journal of Nutrition / Volume 100 / Issue 05 / November 2008, pp 992-1003 Copyright © The Authors 2008. The original publication is available at: http://dx.doi.org/10.1017/S0007114508966071|
|British Journal of Nutrition 2008.pdf||312.69 kB||Adobe PDF||View/Open|
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