J. Anim Sci.
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J. Anim Sci. 1977. 44:722-728.
© 1977 American Society of Animal Science
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Comparison of Chemically Preserved and Artificially Dried Corn for Finishing Yearling Steers1

D. R. Ware, H. L. Self and M. P. Hoffmann

Iowa State University, Ames 500112,3,4,

Abstract

Yearling steers were used to compare dried corn with high-moisture corn treated with propionic acid (PA) in six trials (1971 to 1974) and ammonium isobutyrate (AIB) in four trials (1972 to 1974). Daily post-storage grain dry matter (DM) consumption, average daily gain (ADG), pre-storage grain DM conversion, post-storage grain DM conversion and grain DM losses within storage systems from harvest to feeding were determined.

On a post-storage grain DM basis, cattle fed PA-treated grain did not differ in average daily DM consumption, ADG or grain DM conversion from those fed dried grain. When pre-storage grain DM was used as a basis for comparison, conversion ratios were improved (P<.05) and grain DM losses were reduced (P<.05) in grain treated with PA before storage. Significantly less grain DM was lost in a PA-treated system than in a dry storage system (P<.05).

Cattle fed AIB-treated grain did not differ in ADG from cattle fed dried grain, but consumed more grain DM per day (P<.05), and were more efficient (P<.05) in converting grain DM on both a pre- and post-storage basis to live weight gain. Significantly less DM was lost during the storage of AIB-treated grain than in artificially dried grain (P<05).

Footnotes

1 Journal Paper No. J-8394 of the Iowa Agriculture and Home Economics Experiment Station, Ames. Project No. 1801.

2 Animal Science Department.

3 Partial financial support provided by W. R. Grace and Company.

4 Partial financial support provided by Chevron Chemical Company, Ortho Division.






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Copyright © 1977 by the American Society of Animal Science.