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Minerals for Developing Breeding Gilts on Pastures

Iowa Agricultural Experiment Station

Abstract

To develop the prospective breeding gilts in the most economical and effeetive fashion is a consummation fervently wished by the progressive swine breeder and farmer. His aim is to keep down the feed costs, to lessen the feed required for 100 pounds of gain, to promote maximum and well-balanced growth, to develop good substantial bone, and to conserve the health. In truth, the outstanding ideals that the idealist holds steadfastly in mind when selecting and developing the prospective breeding herd of gilts are to encourage the normal, vigorous, and dependable unfolding of the breeding potentialities.

The relative values of different pastures, commonly pressed into the swine-growing service for the grazing of the young gilt pigs of spring farrow in their first summer, is of immediate importance. This test covers a comparison of the forages bluegrass, alfalfa, red clover, alsike, hubam or annual sweet clover, and dwarf essex rape, in two comparable series, the one with a fairly complete mineral mixture, and the other without added minerals.