Farm & Flock— presented by Chicken Whisperer Magazine Keep Your Livestock Productive
Signs of Heat Stress to Watch For
Catching heat stress early gives you time to act before it becomes serious. Animals will change their behavior as they try to cool themselves down, and those changes are your first clue.
Keep an eye out for:
• Increased panting or rapid breathing
• Reduced appetite or shifts in water intake
• Lethargy or crowding near shade and water
• Drops in milk production, weight gain, egg production or reproductive performance
• In severe cases, drooling, open-mouth breathing or collapse
As Dr. Itle notes, heat stress can lead to " negative growth, production, reproduction, welfare and health outcomes." She also warns that hyperthermia can be fatal, so call your veterinarian for consultation if an animal is in distress.
Prioritize Clean, Cool Water
Water is your most powerful tool against heat stress, and it ' s often the easiest to overlook. In hot weather, animals drink far more than usual, sometimes doubling their normal intake.
Make sure every animal has constant access to fresh, cool water. Check and clean troughs, buckets and automatic waterers frequently, since warm weather encourages algae and grime. Place water in shaded areas when you can, so it stays cooler and more inviting.
Improve Shade and Airflow
Shade and ventilation work together to lower the heat load on your animals. Natural shade from trees is great, but shelters, shade cloths, tarps and portable structures all do the job when trees are scarce.
Airflow matters just as much. Good ventilation pulls heat out of barns, coops and loafing areas. Fans can help where it ' s safe and practical to use them. And don ' t pack animals in too tightly; crowding reduces air circulation and raises the temperature around each animal.
Dr. Itle recommends supplemental shade " with adequate space," along with increased ventilation and airflow from fans. She also points to evaporative cooling, such as misters or " intermittently soaking animals with water."
Combine shade with strong airflow, and give animals enough room to spread out and cool down.
Adjust Your Feeding Strategy
Heat suppresses appetite, so timing your feedings can keep intake up. Feed during the cooler parts of the day, like early morning or evening, when animals are more willing to eat.
This matters because digestion itself generates body heat. Feeding heavily at midday adds to the load just when animals are struggling most. If you ' re seeing intake drop sharply, work with your veterinarian or a nutritionist about adjusting the ration.
Feed quality also suffers in hot, humid conditions. Spoilage occurs more quickly, so store and manage feed carefully to keep it fresh.
Reduce Handling and Other Stressors
Every extra stressor stacks on top of the heat. Transport, regrouping, vaccinations and routine handling all demand energy your animals would rather spend staying cool. When you can, limit these activities during peak heat. Schedule necessary work for early morning, when temperatures are lowest. The less you ask of your animals during a heat event, the more energy they can put toward thermoregulation.
Species-Specific Considerations
Every species handles heat a little differently, and your management should reflect that.
• Cattle: Milk production, grazing behavior and breeding performance often decline in the heat.
AcreageLife. com August 2026 AcreageLife 15