J. Anim Sci.
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J. Anim Sci. 1968. 27:1690-1694.
© 1968 American Society of Animal Science
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Supplements to Corn and Hay-Crop Silages for Fattening Beef Cattle1

R. C. Hammes, Jr., J. P. Fontenot, R. E. Blaser, H. T. Bryant and R. W. Engel2

Virginia Polytechnic Institute, Blacksburg,3

Abstract

Two fattening trials were conducted to study the value of rations containing corn silage or a 1:1 mixture (dry basis) of corn and low-moisture or high-moisture alfalfa-orchardgrass silage as the principal energy source. One ration consisted of corn silage supplemented with cottonseed meal. The rations containing the mixtures of corn and hay-crop silages were supplemented with cottonseed meal, ear corn or both. The high-silage rations were compared to a high-grain ration.

Daily gain, feed efficiency and carcass grade for the cattle fed the corn silage-cottonseed meal ration were not significantly different than for those fed the high-grain ration. Rate of gain and carcass grade tended to be higher for the high-grain ration.

Performance of the cattle fed the mixtures of corn and hay-crop silages was generally lower than for the cattle fed only corn silage as the forage, although differences were not always significant. Usually there were no significant differences between the cattle fed the low- and high-moisture hay-crop silages. Feeding a low level of ear corn in addition to protein supplement tended to improve performance of cattle fed the forage mixtures.

Footnotes

1 Partially supported by the Old Dominion Foundation.

2 Appreciation is expressed to C. Y. Kramer for conducting the statistical analyses and to R, F. Kelly and P. P. Graham for collecting carcass data.

3 Departments of Agronomy, Animal Science and Biochemistry and Nutrition.






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Copyright © 1968 by the American Society of Animal Science.