Fish Physiology and Biochemistry

, 35:399

Dietary fish oil replacement with lard and soybean oil affects triacylglycerol and phospholipid muscle and liver docosahexaenoic acid content but not in the brain and eyes of surubim juveniles Pseudoplatystoma sp.

  • M. D. Noffs
  • R. C. Martino
  • L. C. Trugo
  • E. C. Urbinati
  • J. B. K. Fernandes
  • L. S. Takahashi
Article

DOI: 10.1007/s10695-008-9264-8

Cite this article as:
Noffs, M.D., Martino, R.C., Trugo, L.C. et al. Fish Physiol Biochem (2009) 35: 399. doi:10.1007/s10695-008-9264-8

Abstract

Triplicate groups of juvenile suribim were fed for 183 days one of four different isonitrogenous (47.6% crude protein) and isolipidic (18.7% lipid) diets formulated using three different lipid sources: 100% fish oil (FO, diet 1); 100% pig lard (L, diet 2); 100% soybean oil (SO, diet 3), and FO/L/SO (1:1:1, w/w/w; diet 4). The tissue levels of fatty acids 18:2n − 6 and 18:3n − 3 decreased relative to corresponding dietary fatty acid values. The 20:5n − 3 and 22:6n − 3 composition of muscle and liver neutral lipids were linearly correlated with corresponding dietary fatty acid composition. In contrast, the 22:6n − 3 composition of the brain and eye were similar among treatments. The 22:6n − 3 level was enriched in all tissues, particularly in the neural tissues. Similar results were observed for tissue polar lipids: fatty acids content reflected dietary composition, with the exception of the 22:6n − 3 level, which showed enrichment and no differences between groups. Given these results, the importance of the biochemical functions (transport and/or metabolism) of 22:6n − 3 in the development of the neural system of surubim warrants further investigation.

Keywords

Fish oilLipid metabolismPhospholipidsPig lardPolyunsaturated fatty acidsPseudoplatystoma sp.Soybean oilTriacylglycerols

Copyright information

© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  • M. D. Noffs
    • 1
  • R. C. Martino
    • 2
  • L. C. Trugo
    • 1
  • E. C. Urbinati
    • 3
  • J. B. K. Fernandes
    • 3
  • L. S. Takahashi
    • 3
  1. 1.Instituto de Química (CT)Universidade Federal do Rio de Janeiro–Laboratório de Bioquímica Nutricional e de AlimentosRio de JaneiroBrazil
  2. 2.Fundação Instituto de Pesca do Estado do Rio de JaneiroUnidade de Tecnologia do PescadoRio de JaneiroBrazil
  3. 3.Centro de Aqüicultura da UNESP (CAUNESP)Universidade do Estado de São PauloJaboticabalBrazil