By Kay Ledbetter
Heat stress in cattle can negatively affect herd health, growth and reproduction. As temperatures increase, Texas A&M AgriLife Extension Service experts explain what causes heat stress and how to lower the risk.
Two AgriLife Extension beef cattle specialists in the Texas A&M Department of Animal Science, Jason Smith, Ph.D., associate professor at the Texas A&M AgriLife High Plains Research and Extension Center at Canyon, and Ron Gill, Ph.D., professor, Chico, said understanding how environment, genetics and management activities interact can help producers protect their herds and maintain productivity during the hottest months.
Smith and Gill share their expertise on managing heat stress.
What causes heat stress?
Heat stress occurs when cattle generate and absorb more heat than they can release, affecting their growth, reproduction and overall performance if not managed effectively.
Several factors influence heat stress, including:
- Temperature
- Humidity
- Air movement
- Shade availability
- Water availability
- Management practices
- Genetics
Humidity is especially impactful because it slows an animal’s ability to release heat.
How heat stress varies by region in Texas
While parts of Texas regularly experience extreme heat, conditions vary widely across the state, affecting how cattle respond and how producers should prepare.
Texas Panhandle
In the Texas Panhandle, cattle often face high daytime temperatures. However, lower humidity, steady airflow and cooler nights help reduce overall stress.
Source : tamu.edu