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Table 6 The proximate chemical composition of the experimental diets (%)

From: Effects of different feeding regimens with protease supplementation on growth, amino acid digestibility, economic efficiency, blood biochemical parameters, and intestinal histology in broiler chickens

Ingredients Unit Starter stage (4–10 day) Grower stage (11–23 day) Finisher stage (24–35 day)
T1–T2 T3–T4 T5–T6 T1–T2 T3–T4 T5–T6 T1–T2 T3–T4 T5–T6
Corn 7.25% CP % 54 56.5 52.2 58 59.60 55.30 62.52 64 59.50
Soybean meal 47% CP % 39 37.9 31.6 32 33.80 27.50 26.00 27 21
Corn gluten meal 60% CP % 1.2 3.20 4.50 2.24 2
Corn DDGS 26.5% CP % 5 5 5
Sunflower meal 36% CP % 5 5 5
Oil (Soya) % 2 1.55 2.20 3 2.90 3.5 3.50 3.30 4
Dicalcium phosphate 18% % 2 2 1.80 1.70 1.70 1.55 1.45 1.45 1.33
Calcium carbonate % 0.5 0.40 0.40 0.50 0.45 0.50 0.50 0.45 0.50
Dl methionine 99% % 0.39 0.35 0.33 0.28 0.31 0.29 0.27 0.30 0.28
Sodium bicarbonate % 0.32 0.37 0.31 0.33 0.32 0.31 0.32 0.30 0.30
Broiler Premixa % 0.3 0.30 0.40 0.30 0.30 0.30 0.30 0.30 0.30
l-LYSINE Hcl 98% % 0.25 0.29 0.32 0.30 0.25 0.37 0.28 0.27 0.38
Salt % 0.11 0.08 0.07 0.11 0.12 0.08 0.13 0.13 0.10
l-Threonine 98.5% % 0.10 0.09 0.13 0.10 0.07 0.09 0.06 0.08 0.10
Choline % 0.06 0.07 0.10 0.07 0.07 0.10 0.07 0.07 0.10
Antimycotoxin % 0.1 0.1 0.10 0.10 0.10 0.10 0.10 0.10 0.10
Phytase enzyme % 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005
Chemical analysis
 Moisture % 11.35 11.44 11.19 11.23 11.32 11.07 11.18 11.25 11.00
 Crude protein % 23.2 22.20 22.22 21.55 20.53 20.56 20.15 19.10 19.10
 Crude fat % 4.91 4.49 5.53 6.04 5.87 6.85 6.67 6.43 7.50
 Lysine g/kg 14.48 13.71 13.77 13.20 13.05 13.05 11.55 11.57 11.55
 Methionine g/kg 7.34 6.76 6.73 6.18 6.14 6.12 5.97 6.02 5.97
 Methionine + cystine g/kg 10.88 10.37 10.22 9.58 9.34 9.40 9.19 9.08 9.12
 Threonine g/kg 9.85 9.41 9.62 9.13 8.52 8.55 8.03 7.96 7.99
 Tryptophan g/kg 2.83 2.75 2.63 2.49 2.50 2.38 2.18 2.17 2.07
 Arginine g/kg 15.53 15.09 14.79 13.72 13.76 13.49 12.07 12.02 11.80
 Valine g/kg 11.10 11.04 11.08 10.27 10.14 10.23 9.45 9.07 9.01
 Calcium g/kg 8.79 8.43 8.43 7.83 7.70 7.68 7.09 6.95 7
 Av. Phosphorus g/kg 4.98 4.98 4.91 4.47 4.49 4.49 4.03 4.04 4.09
 Sodium g/kg 1.59 1.59 1.59 1.62 1.61 1.61 1.67 1.60 1.67
 Potassium g/kg 9.19 9.11 8.87 8.05 8.41 8.19 7.07 7.29 7.11
 Cl g/kg 2.28 1.98 2.25 2.32 2.30 2.36 2.34 2.33 2.43
 Crude fiber % 3.52 3.52 4.29 3.23 3.34 4.11 2.99 3.05 3.84
 ME (kcal/kg) Kcal/kg 2991.12 2969.7 2973.74 3103.42 3071.17 3070.72 3200.15 3173.76 3173.84
  1. T1 (FR1 − VE): recommended protein SBM diet without protease supplementation; T2 (FR1 + VE): recommended protein SBM diet + protease supplementation; T3 (FR2 − VE): low-protein SBM diet without protease supplementation; T4 (FR2 + VE): low-protein SBM diet + protease supplementation; T5 (FR3 − VE): low-protein SBM/DDGS-SFM diet without protease supplementation; T6 (FR3 + VE): low-protein SBM/DDGS-SFM diet + protease supplementation
  2. aPremix per kg of diet: vitamin A, 1 500 IU; vitamin D3, 200 IU; vitamin E, 10 mg; vitamin K3, 0.5 mg; thiamine, 1.8 mg; riboflavin, 3.6 mg; pantothenic acid, 10 mg; folicacid, 0.55 mg; pyridoxine, 3.5 mg; niacin, 35 mg; cobalamin, 0.01 mg; biotin, 0.15 mg; Fe, 80 mg; Cu, 8 mg; Mn, 60 mg; Zn, 40 mg; I, 0.35 mg; Se, 0.15 mg