Table 1. Formula and chemical composition of experimental basal diets (as-fed basis)

Item Phase I Phase II
(0-14 d) (15-28 d)
Ingredient (g/kg) 1,000 1,000
 Corn 380.7 465.7
 Whey powder 170 153.8
 Fish meal (60%) 50 30
 Soybean meal dehulled 244.9 294.9
 Soy protein concentrate 50 -
 Soy oil 33.8 26
 Mono calcium phosphate 4 3.6
 Limestone 7.7 8.3
 Salt 3 3
 DL-Methionine (98%) 1.4 0.8
 L-Lysine (98%) 3.3 2.8
 L-Threonine (98.5%) 1.4 1.3
 L-Tryptophan (10%) 2.2 1.7
 Vitamin premix1) 2.5 2.5
 Mineral premix2) 2.5 2.5
 Choline-chloride (50%) 0.5 0.5
 Phytase 0.1 0.1
 Chromic oxide 2.5 2.5
 Lactose 39.5 -
Calculated composition (%)
 ME (MJ/kg) 14.226 14.226
 CP 23 21
 Ca 0.8 0.7
 Av.P 0.4 0.33
 SID. Lys 1.35 1.23
 SID. Met 0.41 0.36
 SID. Met + Cys 0.74 0.68
 SID. Thr 0.79 0.73
 SID. Trp 0.22 0.2
 Lactose 15 10
Supplied per kilogram of diet: vitamin A, 20,000 IU; vitamin D3, 4,200 IU; vitamin E, 10 IU; vitamin K3, 5.6 mg; vitamin B1, 2.8 mg; vitamin B2, 5.5 mg; vitamin B6, 4.2 mg; vitamin B12, 0.042 mg; pantothenic acid, 14 mg; niacin, 42 mg; biotin, 0.105 mg; folic acid, 1.05 mg.
Supplied per kilogram of diet: 0.3 mg Se; 0.20 mg Co; 30 mg Cu; 30 mg Mn; 20 mg Zn; 0.35 mg I; Fe based on the treatments.