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United States Department of Agriculture

Agricultural Research Service

Title: ANALYSES OF THERMOREGULATORY RESPONSES OF FEEDER CATTLE EXPOSED TO SIMULATED HEAT WAVES

Authors
item Brown Brandl, Tami
item Eigenberg, Roger
item Hahn, George
item Nienaber, John
item Mader, Terry - UNIVERSITY NEBRASKA
item Spiers, Donald - UNIVERSITY MISSOURI
item Parkhurst, Anne - UNIVERSITY NEBRASKA

Submitted to: International Journal of Biometeorology
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: December 20, 2004
Publication Date: May 1, 2005
Citation: Brown Brandl, T.M., Eigenberg, R.A., Hahn, G.L., Nienaber, J.A., Mader, T.L., Spiers, D.E., Parkhurst, A.M. 2005. Analyses of thermoregulatory responses of feeder cattle exposed to simulated heat waves. International Journal of Biometeorology 49:285-296.

Interpretive Summary: Heat stress reduces performance and, in the most severe cases, causes death of feedlot cattle resulting in major economic losses. A study was designed to evaluate feed intake, feeding behavior, breathing rate, body temperature, and heat production of feedlot cattle under hot conditions. Nine feedlot steers were exposed to three different hot environments of varying patterns. Differences between environments were found and were dependant on the parameters used. Overall, it was found that parameters of breathing rate and feed intake gave an accurate assessment of the animal's well being as it relates to heat.

Technical Abstract:

Last Modified: 9/1/2014
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