Table 3. Nutrient and amino acid composition of the reference and test diets fed to olive flounder

Reference diet Test diets (70% reference + 30% ingredient)
SBM SPC SPI RSM PPC WGM WF
Proximate analysis (% of dry matter)
 Crude protein 53.1 51.5 59.4 57.8 48.0 51.8 62.3 42.1
 Crude lipid 10.4 7.6 7.4 7.4 7.5 8.6 7.6 7.7
 Crude fiber 3.6 4.0 3.5 3.6 3.9 3.6 3.4 3.6
 Ash 15.2 12.5 12.6 13.1 13.5 11.8 10.8 11.3
 Carbohydrate1) 17.7 24.4 17.1 18.2 27.1 24.2 16.0 35.3
 Gross energy (kJ/g) 20.5 19.8 20.4 20.3 19.5 19.9 21.1 19.0
Essential amino acids (% of protein)
 Arg 6.2 6.4 6.3 6.4 6.3 6.4 5.8 6.2
 His 3.7 3.6 3.6 3.6 3.7 3.6 3.5 3.7
 Ile 4.5 4.5 4.3 4.4 4.3 4.4 4.4 4.3
 Leu 8.2 8.1 8.1 8.1 8.1 8.2 7.9 8.1
 Lys 8.0 7.8 7.8 7.9 7.9 8.0 7.3 7.9
 Met + Cys 4.8 4.6 4.9 4.4 4.4 4.5 4.5 4.7
 Phe + Tyr 7.5 7.6 7.5 7.5 7.4 7.6 7.4 7.4
 Thr 5.0 4.9 5.0 4.9 5.1 4.9 4.6 5.0
 Val 5.6 5.5 5.4 5.4 5.4 5.4 5.5 5.4
100 – (Moisture + Crude protein + Crude lipid + Ash).
SBM, soybean meal; SPC, soy protein concentrate; SPI, soy protein isolate; RSM, rapeseed meal; PPC, pea protein concentrate; WGM, wheat gluten meal; WF, wheat flour.