Glenn Selk, Emeritus Extension Animal Scientist and the late Dr. Dave Sparks, OSU Area Extension Veterinarian — During the very hot, dry summer of 2011, the late Dr. Dave Sparks, Oklahoma State University Extension Veterinarian wrote a very comprehensive article about heat stress in cattle and livestock in general. Dr. Sparks’ understanding of heat stress came from years of veterinary practice in Southern Kansas and as Extension Veterinarian in Eastern Oklahoma. His thoughts seem applicable nearly every summer in Oklahoma. The following are some key excerpts from that article:

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