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Comparing High-, Medium-High-, and Low-Protein Corn for Fattening Lambs^{1, 2, 3,}

University of Illinois⁴

Abstract

Thirty black-faced Western lambs were trio fed (equal feed) for 70 days on corn-timothy hay-molasses rations to compare the feeding value of high-, medium-high-, and low-protein corn (13.2, 11.03, and 7.72 percent crude protein). Body gains, wool growth, dressing percentage and carcass grades were compared. Lambs fed both high- and medium-high-protein corn made significantly greater gains (1 percent level) and produced significantly more wool (5 percent level) than lambs fed low-protein corn. No significant differences were observed between gains or wool produced by lambs on the medium-high- and high-protein corn.

¹ This paper is part of a thesis submitted by the senior author to the Graduate College, University of Illinois, in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Animal Science.

² Grateful acknowledgment is made to Funk Brothers Seed Company, Bloomington, Illinois, for furnishing the corns used in the experiment and to Dr. J. L. Krider, Central Soya Company, Fort Wayne, Indiana, for arranging for the preparation of the timothy hay-molasses mixture.

³ Published with the approval of the Illinois Agricultural Experiment Station, Urbana.

⁴ Departments of Animal Science and Agronomy in the College of Agriculture.