J. Anim Sci.
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J. Anim Sci. 1968. 27:165-169.
© 1968 American Society of Animal Science
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Net Energy of Sorghum Grain and Corn for Fattening Cattle

George A. B. Hall1, Curtis W. Absher2, Robert Totusek3 and Allen D. Tillman3

Oklahoma Agricultural Experiment Station, Stillwater,4, 5,

Abstract

Two separate trials were conducted for the purpose of determining the net energy values of corn and sorghum grain fed at three levels of intake: maintenance, intermediate and high. The net energy values by the increment method of determination (NEp) for corn and sorghum grain did not differ in any comparison; however, the values for both grains were lower in trial 2 than trial 1. The reasons for this lower value are not known. NEm+p values for corn and sorghum grain did not differ; however, both grains had higher values when used for maintenance. There appears to be no reason for cattle feeders to discriminate against milo as an energy source when it is fed in rations balanced in minerals, vitamins and protein. However, recognition must be given to variations in different lots of sorghum grain because of differences in varieties and environmental factors, which affect compositions of sorghum grains.

A rectilinear relationship between energy retained and feed consumed above maintenance was found, indicating a constant partial efficiency of feed utilization; these data support the idea that each succeeding increment of feed above maintenance has a constant NEp.

Footnotes

1 Present address: Sao Paulo, Brazil.

2 Present address: University of Tennessee, Knoxville.

3 Department of Animal Science.

4 Approved by the Director.

5 Partial financial support provided by Farmland Industries, Inc., Kansas City, Missouri.






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Copyright © 1968 by the American Society of Animal Science.