By Dr. Philipe Moriel

As global demand for beef continues to rise, expanding production in tropical and subtropical regions, where Bos indicus-influenced cattle are common, is becoming increasingly important. But there’s a challenge: long periods of heat and humidity in these areas can seriously limit how well cattle grow and perform. But just how far-reaching are its effects? When temperatures climb, cattle experience internal heat buildup, triggering physiological and behavioral changes that signal heat stress. In dairy cows, pigs, and sheep, exposure to high temperatures late in pregnancy has already been shown to harm the growth and immune systems of their offspring. But what about beef cattle, especially those with Bos indicus genetics adapted to hot and humid environments? How can producers support both cattle health and productivity in these tough environments?

Two studies at the UF/IFAS Range Cattle REC are tackling this question by testing whether access to artificial shade during gestation in Bos indicus-influenced beef females could make a difference.

Want to understand how and why? Click here to watch my latest Ona Highlight recording to explore these fascinating findings and what they mean for managing cattle in hot climates.

Dr. Moriel is a specialist in beef cattle nutrition and management at the UF/IFAS Range Cattle Research and Education Center in Ona, FL.  If you have questions, you can reach him at pmoriel@ufl.edu.

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