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Growth, digestibility and nutrient utilization of rainbow trout (Oncorhynchus mykiss) and European sea bass (Dicentrarchus labrax) juveniles fed different dietary soybean oil levels
Alves Martins, D.; Gomes, E.; Rema, P.; Dias, J.; Ozório, R.O.A.; Valente, L.M.P. (2006). Growth, digestibility and nutrient utilization of rainbow trout (Oncorhynchus mykiss) and European sea bass (Dicentrarchus labrax) juveniles fed different dietary soybean oil levels. Aquacult. Int. 14(3): 285-295. dx.doi.org/10.1007/s10499-005-9034-x
In: Aquaculture International. Springer: London. ISSN 0967-6120, more
Peer reviewed article  

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Keywords
    Digestibility; Fish oils; Growth; Marine fish; Rainbow trout; Dicentrarchus labrax (Linnaeus, 1758) [WoRMS]; Oncorhynchus mykiss (Walbaum, 1792) [WoRMS]; Marine; Fresh water

Authors  Top 
  • Alves Martins, D.
  • Gomes, E.
  • Rema, P.
  • Dias, J.
  • Ozório, R.O.A.
  • Valente, L.M.P.

Abstract
    A shortage of marine raw ingredients, such as fish oil, is predicted in the near future. The use of suitable alternative lipid sources, such as vegetable oils, is crucial for sustainable growth of the aquaculture sector. Three isonitrogenous (50% Crude Protein) and isoenergetic (19 kJ  g−1) diets, in which fish oil was gradually replaced by soybean oil (0, 25 and 50% of the oil fraction) were tested for 12 weeks, using European sea bass (Dicentrarchus labrax) and rainbow trout (Oncorhynchus mykiss) juveniles. No dietary effects (p>0.05) on growth performance, feed conversion, digestibility or body composition were observed with either species. The results obtained suggest the inclusion of soybean oil up to 50% of the dietary lipid is possible, in diets for sea bass and/or rainbow trout juveniles.

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