J. Anim Sci.
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J. Anim Sci. 1975. 41:1124-1133.
© 1975 American Society of Animal Science
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A Nutritive Evaluation of Dried, High-Moisture and Acid-Treated Corn and Sorghum Grains for Sheep1

H. W. Harpster, T. A. Long and L. L. Wilson2

The Pennsylvania State University, University Park, Pa. 16802

Abstract

The nutritive value of ensiled corn, non-bird resistant sorghum (NBRS), and bird resistant sorghum (BRS) was compared in sheep growth and digestion trials. The treatments were dried, high-moisture and acid-treated high-moisture (acetic-propionic acid mixture). Eight crossbred wethers (avg 34 kg body weight) were randomly assigned to each ration in the growth study. Four similar wethers (avg 41.6 kg) were assigned to each treatment in the digestion trial.

Only acid-treated grains were mold-free by plate-count analysis. Two of three untreated high-moisture grains developed pH values below those noted in the acid-treated grains, although detectable levels of mold were observed in the untreated high-moisture grains. Dry grains supported substantial mold counts, although mold was not visually apparent.

Results of the growth study indicated that either sorghum was consumed at slightly higher levels than corn, despite the higher levels of tannins associated with BRS grains. Over all storage methods, corn and BRS were utilized most and least efficiently, respectively, in producing weight gain. Average daily gain was greatest for lambs fed corn.

Footnotes

1 Journal Series of the Pennsylvania Agricultural Experiment Station, Paper No. 4649; number assigned April 2,1974.

2 The authors express their appreciation to the Celanese Chemical Company, New York, N. Y., for providing partial support of this study. The technical assistance of J. A. Weaver, R. Kuzemchak and D. L. Walker, Department of Animal Science, and J. H. McGahen, Agronomy Extension, is gratefully acknowledged.






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