A factorial experimental design for investigation of effects of dietary lipid content and pro- and antioxidants on lipid composition in Atlantic salmon (Salmo salar) tissues and lipoproteins
By B. Torstensen, Ø. Lie, Kristin Hamre. 2001
93 citations recorded by the source corpus.
Sixteen groups of post smolt, Atlantic salmon (Salmo salar) (initial weight 148 a 17 g) were fed diets with diAerent lipid content and composition of pro- and antioxidants (vitamin E, vitamin C, astaxanthin, Fe, Cu and Mn). The composition of the experimental diets was based on a multivariate reduced factorial design (RFD) (2 7‐3 ) with either high (+1) or low (‐1) level (within limits of toxicity and requirement) of each of the seven dietary variables. Lipid class and fatty acid (FA) composition was analysed in retina, very low density lipoprotein (VLDL), low density lipoprotein (LDL) and high density lipoprotein (HDL). Further FA composition was analysed in fillet, liver and plasma. High dietary lipid increased growth, feed eAciency, fillet lipid level and the amount of LDL and HDL in plasma, whereas high dietary copper and high dietary vitamin E decreased the amount of plasma LDL. High dietary vitamin E decreased the amount of lipid and protein in LDL, whereas high dietary lipid increased cholesterol and cholesterol ester levels in plasma and HDL and the amount of lipid in LDL. Dietary astaxanthin and manganese aAected retina PE levels. The FA composition did not diAer significantly between the 16 diets. Dietary FA composition was reflected in fillet FA composition and gradually less in VLDL, LDL, HDL, plasma, liver and retina FA composition. Dietary lipid content influenced FA composition to some extent in the analysed tissues, i.e. generally high dietary lipid content led to a decreased relative amount of saturated and monoene fatty acids and an increase of the relative amount of polyene fatty acids.
Subfields: Aquatic Science, Biochemistry, Immunology
View Paper: https://www.semanticscholar.org/paper/175f73a932a566ba24cba08403c18ea1597387bf
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Citations in the corpus
- Safe and Nutritious Aquaculture Produce: Benefits and Risks of Alternative Sustainable Aquafeeds (2008, background): “In this regard, the rank order of flesh lipid content would be salmon > trout > sea bream > sea bass > cod and flesh lipid deposition tends to increase with fish weight, especially in salmonids (Hemre and Sandnes 1999; Torstensen et al. 2001).”
- Effect of dietary lipid levels on growth, feed utilization, body composition and serum metabolites of meagre (Argyrosomus regius) juveniles (2010, background): “Generally, the increase of dietary lipid level improves growth, feed and protein efficiency, as it spares proteins that could otherwise have been catabolized and used as an energy source (Hillestad and Johnsen, 1994; Helland and Grisdale-Helland, 1998; Grisdale-Helland and Helland 1998; De Silva et ”
- Complete replacement of dietary fish oil with a vegetable oil blend affect liver lipid and plasma lipoprotein levels in Atlantic salmon (Salmo salar L.) (2007, background): “Plasma VLDL sampled 24 hours after the last meal is predominantly endogenously synthesised VLDL excreted from liver (Babin and Vernier, 1989; Torstensen, 2000; Torstensen et al., 2001).”
- Effects of dietary lipid levels on growth performance of marbled spinefoot rabbitfish Siganus rivulatus (2011, background): “A protein sparing effect by lipid supplementation has been well demonstrated for salmonids and sea bass (Watanabe, 1982; Beamish and Medland, 1986; Dias et al., 1998; Torstensen et al., 2001), and jade perch Scortum barcoo (Song et al.”