J. Anim Sci.
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J. Anim Sci. 1943. 2:221-225.
© 1943 American Society of Animal Science
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Variations in the Occurrence of Bloat in the Steer Progeny of Beef Bulls

Bradford Knapp, Jr., A. L. Baker and Ralph W. Phillips1

United States Department of Agriculture

Abstract

A study was made of the frequency of bloat in steer calves on full feed sired by 13 purebred Hereford bulls used in 2 successive years at the U. S. Range Livestock Experiment Station, Miles City, Montana. A significant difference in number of steers showing excessive bloat was observed between the progeny of various bulls in one year. An analysis based on the number of steer days showed that a highly significant difference existed between progeny groups in both years in the frequency of bloat. These results indicate that there are inherent differences between the progeny of different bulls in ability to handle large quantities of feed without digestive disturbances, and indicate the possibility of improvement in this characteristic by selection on the basis of progeny tests.

Footnotes

1 The authors are associate animal husbandman, Beltsville, Maryland; associate animal husbandman, Miles City, Montana; and senior animal husbandman, Beltsville, Maryland, respectively. The authors acknowledge the helpful assistance of A. E. Brandt, Chief of Division of Conservation Experiment Stations, Soil Conservation Service, in the statistical analysis of the data.




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J. T. Vasconcelos and M. L. Galyean
ASAS Centennial Paper: Contributions in the Journal of Animal Science to understanding cattle metabolic and digestive disorders
J Anim Sci, July 1, 2008; 86(7): 1711 - 1721.
[Abstract] [Full Text] [PDF]


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Copyright © 1943 by the American Society of Animal Science.