Effects of dietary protein and lipid levels on growth, protein digestibility, feed utilization and body composition of Atlantic cod (Gadus morhua)

A study was conducted to obtain more information about optimal macronutrient ratios in diets for Atlantic cod (Gadus morhua). Fourteen extruded diets based on fish meal, fish oil and maize starch were fed to cod (initial weight 77 g) in 150-L tanks (n = 2–4) in an incomplete factorial design. The diets contained approximately 49, 54, 58 or 63% crude protein and 11, 16, 20, 23 or 28% crude lipid (6–23% starch). The growth trial was stopped during...