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Hardness of dent corn as a factor in its nutritive value for fattening pigs¹

Iowa Agricultural Experiment Station

Abstract

By far the greatest amount of dent corn used for swine feeding in the corn belt can be classified as medium in hardness. Hard and soft dent corns however are produced in this region and fed to swine. The varieties or strains of dent corn high in flintlike starch are high in breaking resistance while corn with more than the usual amount of flourlike starch is crushed with less force.

Three feeding trials have been conducted at the Iowa Agricultural Experiment Station to determine the nutritive value of dent corns of different degrees of hardness. The corn used in the first trial was grown in the crop year of 1929. The soft type corn was a special selection of Reid Yellow Dent and Krug was the variety of hard corn used. Corn secured from the local elevator was used for the medium hard type. The degree of hardness of samples of one hundred kernels of each kind of corn was measured by means of a pincher.

¹ Journal Paper No. J.393 of the Iowa Agricultural Experiment Station, Ames, Iowa. Project No. 41.