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. 2020 Dec 15;7:603284. doi: 10.3389/fvets.2020.603284

Table 1.

Composition of experimental starter and grower diets.

Startera Growerb
Fine limestonec Coarse limestoned Fine limestonec Coarse limestoned
Ingredients (%) K– K+ K– K+ K– K+ K– K+
(%)
Corn 58.50 58.50 58.50 58.50 65.00 65.00 65.00 65.00
Soybean meal (48% CP) 31.50 31.50 31.50 31.50 26.00 26.00 26.00 26.00
Poultry by-product meal 5.00 5.00 5.00 5.00 4.00 4.00 4.00 4.00
Poultry fat 2.00 2.00 2.00 2.00 2.50 2.50 2.50 2.50
Limestone 0.50 0.50 0.50 0.50 0.36 0.36 0.36 0.36
Defluorinated phosphate 1.05 1.05 1.05 1.05 0.77 0.77 0.77 0.77
Salt 0.30 0.30 0.30 0.30 0.30 0.30 0.30 0.30
Potassium carbonatee 0.00 0.20 0.00 0.20 0.00 0.20 0.00 0.20
Sand 0.27 0.07 0.27 0.07 0.24 0.04 0.24 0.04
Choline chloride (60%) 0.20 0.20 0.20 0.20 0.10 0.10 0.10 0.10
Vitamin premixf 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05
Mineral premixg 0.20 0.20 0.20 0.20 0.20 0.20 0.20 0.20
Selenium premixh 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05
DL-Methionine 0.20 0.20 0.20 0.20 0.20 0.20 0.20 0.20
L-Lysine 0.11 0.11 0.11 0.11 0.11 0.11 0.11 0.11
L-Threonine 0.07 0.07 0.07 0.07 0.07 0.07 0.07 0.07
Coccidiostati 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05
Total 100 100 100 100 100 100 100 100
Calculated nutrient content
Metabolizable energy (kcal/g) 2.99 2.99 2.99 2.99 3.09 3.09 3.09 3.09
Crude protein 23.38 23.38 23.38 23.38 20.54 20.54 20.54 20.54
Calcium 0.90 0.90 0.90 0.90 0.71 0.71 0.71 0.71
Available phosphorus 0.45 0.45 0.45 0.45 0.36 0.36 0.36 0.36
Digestible lysine 1.16 1.16 1.16 1.16 1.01 1.01 1.01 1.01
Digestible methionine 0.53 0.53 0.53 0.53 0.50 0.50 0.50 0.50
Digestible methionine+cysteine 0.80 0.80 0.80 0.80 0.75 0.75 0.75 0.75
Digestible threonine 0.79 0.79 0.79 0.79 0.70 0.70 0.70 0.70
Sodium 0.25 0.25 0.25 0.25 0.23 0.23 0.23 0.23
Chloride 0.28 0.28 0.28 0.28 0.26 0.26 0.26 0.26
Potassium 0.92 1.03 0.92 1.03 0.80 0.92 0.80 0.92
DEBj (mEq/kg) 266 291 266 291 231 262 231 262
Analyzed nutrient content
Crude protein 22.58 20.92 23.22 20.50 20.68 21.39 21.26 22.03
Ether extract 4.25 4.35 4.16 4.31 5.10 5.44 5.38 5.43
Crude fiber 3.00 2.70 2.60 2.60 2.40 2.30 2.40 2.50
Ash 4.88 4.90 5.21 5.08 4.84 4.42 4.78 4.06
Total digestible nutrients 86.19 87.40 86.34 86.32 89.54 91.31 90.51 90.76
Sodium 0.16 0.15 0.17 0.18 0.16 0.13 0.18 0.14
Chloride 0.23 0.29 0.26 0.22 0.25 0.22 0.23 0.22
Potassium 0.75 0.87 0.79 0.90 0.67 0.76 0.65 0.70
Analyzed DEBk (mEq/kg) 197 206 203 246 170 189 180 178
a

Starter diet was fed at 16 days of age.

b

Grower diet was fed from approximately 16 to 35 days of age.

c

Fine limestone particle size, 0.2 mm.

d

Coarse limestone particle size, 0.9 mm.

e

Potassium carbonate (as 56.5% K): (K–) basal levels of K; (K+) 0.20% K as potassium carbonate (starter and grower).

f

Vitamin premix supplied the following per kg of diet: 13,200 IU vitamin A, 4,000 IU vitamin D3, 33 IU vitamin E, 0.02 mg vitamin B12, 0.13 mg biotin, 2 mg menadione (K3), 2 mg thiamine, 6.6 mg riboflavin, 11 mg d-pantothenic acid, 4 mg vitamin B6, 55 mg niacin, and 1.1 mg folic acid.

g

Mineral premix supplied the following per kg of diet: manganese, 120 mg; zinc, 120 mg; iron, 80 mg; copper, 10 mg; iodine, 2.5 mg; and cobalt, 1 mg.

h

Selenium premix provided 0.2 mg Se (as Na2SeO3) per kg of diet.

i

Coccidiostat supplied monensin sodium at 90 mg/kg of food.

j

Dietary electrolyte balance calculated using matrix values of sodium, chloride, and potassium.

k

Dietary electrolyte balance calculated using analyzed values sodium, chloride, and potassium.