Table 1. Feed ingredients composition and calculated nutrient contents of a basal diet for periods of starter (d 0–14), grower (d 14–28), and finisher (d 28–41) feeding phases

Ingredients1) (%) Starter Grower Finisher
d 0–14 d 14–28 d 28–41
Yellow corn 60.50 62.61 68.24
Soybean meal 32.13 29.50 23.70
Choline chloride 0.01 0.01 0.01
Dicalcium phosphate 2.29 2.08 1.83
Limestone 1.27 1.14 1.06
Salt 0.33 0.33 0.33
Premix2) 0.25 0.25 0.25
L-Lysine HCl 0.43 0.35 0.35
DL-Methionine 0.40 0.35 0.32
L-Threonine 0.17 0.12 0.10
Sodium bicarbonate 0.002 0.002 0.002
Soybean oil 2.21 3.26 3.80
Sand3) - - -
Calculated composition4)
  CP (%) 20.30 19.12 16.92
  Ca (%) 0.96 0.87 0.78
  ME (kcal/kg) 3000 3099 3196
  Digestible lysine (%) 1.28 1.15 1.02
  Digestible methionine (%) 0.71 0.64 0.59
  Digestible total sulfer amino acid (%) 0.95 0.87 0.80
  Digestible threonine (%) 0.86 0.77 0.68
  Riboflavin (ppm) 1.477 1.433 1.344
  Choline chloride (ppm) 771 725.75 680.4
  P available (%) 0.48 0.44 0.39
  Sodium (%) 0.16 0.16 0.16
 Potassium (%) 0.80 0.76 0.67
 Chloride (%) 0.20 0.20 0.20
Ingredient nutrient compositions were analyzed before formulating the diet.
Premix provided the following per kilogram of finished diet: retinal acetate, 2.654 μg; cholecalciferol, 110 μg; DL-α-tocopherol acetate, 9.9 mg; menadione, 0.9 mg; vitamin B12, 0.01 mg; folic acid, 0.6 μg; choline, 379 mg; D-pantothenic acid, 8.8 mg; riboflavin, 5.0 mg; niacin, 33 mg; thiamine, 1.0 mg; D-biotin, 0.1 mg; pyridoxine, 0.9 mg; ethoxyquin, 28 mg; manganese, 55 mg; zinc, 50 mg; iron, 28 mg; copper, 4 mg; iodine, 0.5 mg; selenium, 0.1 mg.
Experimental additives commercial probiotics Bacillus subtilis PB6 1.1 × 108 CFU/kg of finished feed, and riboflavin at 0.00075 g/kg, 0.0066 g/kg, 0.020 g/kg were added and replacement of sand on diet without these additives.
Nutrient contents were calculated on a dry matter basis.