I say cracked corn is not a good feed, it is a supplement at best or a "treat". Sure it will add a little nutritional value which may help in the winter but if you are going to feed it as a main feed you will have problems.
Really there's no single feed ingredient that can be fed by it's self and have a positive outcome.
Corn either whole, cracked, or ground is a very good feed ingredient and brings a lot to the plate, that's why corn is one of the most used ingredient in a feed mix. Here is just a short listing comparing corn to other cereal grains, here you can see that corn may be lower in crude protein but is very close to the nutritional value of other grains of the same type, in fact corn exceeds in Total Digestible Nutrients, Net Energy of Maintenance and Net Energy of Gain which is a plus when it comes to poultry nutrition.
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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