A positive effect on growth rates from diets containing small proteins and peptides from marine sources has been reported in Atlantic salmon (Salmo salar)(Refstie et al., 2004; Hevroy et al., 2005; Kousoulaki et al., 2009), Japanese flounder (Paralichthys olivaceus) (Zheng et al., 2012) and in broiler chickens (Wagner and Bregendahl, 2007)