Open Access. Powered by Scholars. Published by Universities.®
University of Nebraska - Lincoln
Department of Animal Science: Faculty Publications
Feedlot cattle; Heat stress; Respiration rate; Panting score; Color
Articles 1 - 1 of 1
Full-Text Articles in Entire DC Network
Comparison Of Heat Tolerance Of Feedlot Heifers Of Different Breeds, Tami M. Brown-Brandl, John A. Nienaber, Roger A. Eigenberg, Terry L. Mader, J.L. Morrow, J.W. Dailey
Comparison Of Heat Tolerance Of Feedlot Heifers Of Different Breeds, Tami M. Brown-Brandl, John A. Nienaber, Roger A. Eigenberg, Terry L. Mader, J.L. Morrow, J.W. Dailey
Department of Animal Science: Faculty Publications
Heat stress in cattle causes decreases in feed intake and feed efficiency; in extreme cases, it can cause death. These losses amount to millions of dollars each year. A study was designed to determine severity of heat stress among four breeds of cattle. Throughout two summers, 256 feedlot heifers of four different breeds were observed. Respiration rates, panting scores, and surface temperatures were taken twice each day on 10 animals/breed for several weeks during the summers of 2002 and 2003. Twenty-four-hour behavior measurements were recorded for four heat-stress and four thermoneutral days. Results showed during the afternoon, Angus cattle (black) …