Feeding Corn to chickens is fine as long as there getting good poultry feed also, it is nothing like feeding twinkies to a pregnant lady. If your feeding a 18% protein feed you could feed up to 15%/20% of there diet in treats like corn, scraps, fruits and vegetables.
Corn has a part in a feed ration and has proteins, fat, fiber, energy, vitamins and minerals it also is more digestible nutrition than Oats, Wheat, and Sorghum.
TDN = Total Digestible Nutrients
NEm = Net Energy of Maintenance
NEg = Net Energy of Gain
CP = Crude Protein
NDF = Neutral Detergent Fiber
ADF = Acid Detergent Fiber
Table 1. Nutrient content of various feed grains (NRC, 1996).
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Corn Barley Wheat Oats Sorghum
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TDN, % 90 88 88 77 82
NEm, Mcal/lb 1.02 0.94 0.99 0.84 0.91
NEg, Mcal/lb 0.70 0.64 0.68 0.55 0.61
CP, % 9.8 13.2 14.2 13.6 12.6
Escape Protein, % of CP 55 27 23 17 57
NDF, % 10.8 18.1 11.8 29.3 16.1
ADF, % 3.3 5.8 4.2 14.0 6.4
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Table 2. Mineral content of major feed grains (NRC, 1996).
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Corn Barley Wheat Oats Sorghum
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Calcium, % 0.03 0.05 0.05 0.01 0.04
Phosphorus, % 0.32 0.35 0.44 0.41 0.34
Potassium, % 0.44 0.57 0.40 0.51 0.44
Magnesium, % 0.12 0.12 0.13 0.16 0.17
Sodium, % 0.01 0.01 0.01 0.02 0.01
Sulfur, % 0.11 0.15 0.14 0.21 0.14
Copper, ppm 2.5 5.3 6.5 8.6 4.7
Iron, ppm 54.5 59.5 45.1 94.1 80.8
Manganese, ppm 7.9 18.3 36.6 40.3 15.4
Selenium, ppm 0.14 - 0.05 0.24 0.46
Zinc, ppm 24.2 13.0 38.1 40.8 0.99
Cobalt, ppm - 0.35 - 0.06 -
Molybdenum, ppm 0.60 1.16 0.12 1.70 -
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Table 3. Nutrient content of corn using different harvest, storage,
or processing methods.
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Escape
Dry TDN, NEm, NEg, Protein,
Corn Type Matter % Mcal/lb Mcal/lb CP, % % of CP
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Dry Rolled Corn 86 90 1.02 0.70 9.8 60
Ear Corn 87 83 0.92 0.62 9.0 60
Steam Flaked Corn 82 94 1.06 0.73 10.0 45
High Moisture Corn 75 90 1.02 0.70 10.0 40
High Moisture Ear Corn 75 83 0.92 0.62 8.7 40
High Moisture Snapped Corn 74 81 0.90 0.59 8.8 40
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