How to Manage Sheep During Extreme Heat
Open-mouth panting, drooling, a rapid breathing rate, bunching in shade, staggering, collapse, weakness, glassy eyes, refusal to eat, a sudden drop in water intake or rising rectal temperature all demand immediate action. Also pay attention to indirect signs, such as reduced milk, lower weight gain, poor conception and increased abortions after heat waves. If many animals show signs at once, treat the whole flock, not just the worst cases.
What I would do differently if I were starting again today
I would build my shade and water systems before the first heat wave arrived, not during it. I would put up shade with real airflow, add extra troughs under cover, and learn to read the early signs of heat stress at a glance. I would organize my farm work around the cool hours, and I would refuse to handle or move the flock in the heat, no matter how convenient it seemed. I would keep rams cool and avoid mating at peak heat, and I would choose breeds that suited my climate instead of fighting it. And I would keep a thermometer, a stopwatch and a plan in the shed.
Sheep cannot tell you they are overheating until they are already in trouble. The farmers who lose the fewest animals are the ones who act before the animals ask.
FAQ
What temperature is too hot for sheep?
It depends on the breed, humidity, fleece and condition of the animals. Wool breeds begin to struggle at temperatures well below what hair sheep tolerate, and humid conditions make it far worse. Watch for panting, drooling and reduced feeding as signs of stress.
How much water do sheep need in hot weather?
Water needs rise sharply in the heat, and can be several times higher than in cool weather, especially for lactating ewes. Provide plenty of cool, clean water at several points, and check supplies daily.
Should I shear sheep before summer?
Shearing wool breeds before the hot season can reduce heat load, but leave a short covering of wool to prevent sunburn and provide shade for shorn sheep. Hair breeds usually do not need shearing.
How do I cool a sheep with heat stroke?
Move it to shade and airflow, offer water if it can drink, pour cool water over its body and head, and fan it, stopping when breathing and temperature approach normal. Call a veterinarian immediately.
How does heat affect sheep fertility?
Heat can reduce sperm quality in rams for weeks afterward and increase embryo loss in ewes. Keep breeding animals cool, and avoid mating during the hottest periods when possible.
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In a heat wave, the sheep cannot ask for help, so give them shade, water and quiet before they need it.
