AMES, Iowa – After a cold winter and long cool spring summer is here. Temperatures will be in the mid 90’s this Friday, Saturday and Sunday, and with all the precipitation we have had the humidity will be elevated as well. Feedlot cattle may not be acclimated to summer temperatures yet and the fast warm up this weekend may cause some heat stress issues.
Evaluate your cattle in the morning and again in the afternoon to make sure they are coping with the heat. Make sure cattle have access to plenty of fresh water and provide shade or sprinklers if possible. Pay close attention as the rapid change in temperature may catch some at-risk cattle (cattle at end of feeding period or cattle with previous respiratory disease) dealing with excessive heat stress.
This early heat event is a good opportunity to make sure that your mitigation strategies will be functional for the rest of the summer. The Iowa Beef Center website has information and details on proper heat abatement strategies such as shade and sprinklers.
Check out these additional resources:
Heat Stress in Beef Cattle 4-page publication by Dewell, available as free download
USDA ARS 7-day heat stress forecast
USDA smartphone app provides forecasts of weather conditions that can trigger heat stress in cattle. Free download from Google Play (Android) and the App Store (Apple devices)
The Iowa Beef Center at Iowa State University was established in 1996 with the goal of supporting the growth and vitality of the state’s beef cattle industry. It comprises faculty and staff from Iowa State University Extension and Outreach, College of Agriculture and Life Sciences and College of Veterinary Medicine, and works to develop and deliver the latest research-based information regarding the beef cattle industry. For more information about IBC, visit www.iowabeefcenter.org.
Grant Dewell, ISU Extension beef veterinarian 515-294-2822, firstname.lastname@example.org