Table 1. Ingredient composition of the experimental diets¹⁾

Ingredient	Mash1)	EP
Fish meal (Alaska)	-	60.02
Blood meal	-	4.00
Squid liver powder	-	1.00
Wheat flour	-	19.10
Dried yeast	-	1.00
Fish oil	-	8.21
Choline-liquid (50%)	-	0.30
Liquid methionine (71.7%)	-	0.02
Lecithin	-	1.00
Limestone-S	-	1.00
MKP	-	2.70
Salt	-	0.30
Organic Fe	-	0.50
Vitamin C	-	0.10
Vitamin E	-	0.10
Vitamin Mix2)	-	0.50
Mineral Mix3)	-	0.10
Antioxidant (BHA)	-	0.05

Mash, commercial powdered feed (closed formulation) provided by Cargill Agri Purina, Korea; EP, extruded pellet manufactured by Sajo Dongawon, Korea.
Vitamin added to supply the following (per kg diet): vitamin A, 22,000 IU; vitamin D₃, 4,400 IU; vitamin E, 320 IU; vitamin K₃, 24 mg; thiamine HCl, 50 mg; riboflavin, 60 mg; D-Ca pantothenate, 120 mg; biotin, 2 mg; folic acid, 20 mg; vitamin B₁₂, 100 mg; niacin, 300 mg; pyridoxine HCl, 30 mg; inositol, 600 mg; ethoxyquin, 67 mg.
Mineral added to supply the following (per kg diet): copper sulfate (25.4% Cu), 10 mg; zinc sulfate (22.7% Zn), 60 mg; manganous sulfate (32.5% Mn), 50 mg; magnesium sulfate (24.3% Mg), cobalt chloride (24.8% Co), 2 mg; potassium iodide (76.4% I), 2.0 mg; sodium selenite (45.6% Se), 0.75 mg.
MKP, monobasic potassium phosphate; BHA, butyl hydroxyl anisole.