As temperatures rise during the summer months, hot weather can become a serious concern for livestock. Extended exposure to heat can cause animals stress which affects their health, comfort, and overall well-being. Taking proactive steps during periods of high temperatures can help keep livestock safe and reduce the risk of heat-related illness.
Why Heat Can Be Dangerous for Livestock
Livestock are vulnerable to heat stress, especially during prolonged hot weather or heat waves. High temperatures combined with humidity can make it difficult for animals to regulate their body temperature. Animals experiencing heat stress may become dehydrated, lethargic, or seriously ill if conditions are not appropriately managed.
Signs of Heat Stress in Livestock
It’s important to monitor animals closely during warm weather and recognize signs of heat stress, including:
- Rapid breathing or panting
- Excessive drooling or salivation
- Reduced appetite
- Crowding around water sources
- Increased restlessness
- Difficulty standing or moving
- Unsettled or lethargic
- Sweating (horses and cattle)
- Red, blotchy skin
- Dehydrated (skin tent, dry gums, sunken eyes)
If symptoms become severe, contact a veterinarian immediately.
Tips for Keeping Livestock Safe in Hot Weather
Ensure Constant Access to Water
Fresh, clean water is essential during hot weather. Animals may drink significantly more water during periods of extreme heat, so water sources should be checked regularly throughout the day. Also, monitor water temperature. If water temperatures become to hot animals will decrease their water consumption. Research has shown that cattle will decrease water intake when water reaches 27 °C.
Provide Shade and Shelter
Livestock should have access to shaded areas or sheltered spaces to protect them from direct sun. Shade from trees or covered pens can help reduce heat exposure and improve comfort.
Adjust Feeding and Routine Activities
Whenever possible, feed livestock during cooler parts of the day, such as early morning or evening. Avoid large feedings during peak heat, as digestion can increase body temperature. Routine procedures such as handling, vaccinations, or transport should also be scheduled for cooler hours to reduce stress.
Reduce Exertion and Overcrowding
Heat stress is worsened by crowding and physical exertion. Ensure animals have ample space to spread out and rest comfortably. Avoid unnecessary handling during hot weather and take extra care with animals with greater risk of overheating such as animals with a full coat, are very young or old, pregnant, lactating or have low or high body condition.
Improve Ventilation
Proper ventilation is important, especially in barns or enclosed areas. Fans and increased airflow can help reduce heat buildup and improve animal comfort.
Monitor Animals Frequently
Checking livestock more often during heat events allows farmers and caretakers to identify concerns early and respond quickly if an animal begins showing signs of distress.
Avoid Transport During High Temperatures
Transporting animals during high temperatures increases the risk of heat stress, especially for pigs and poultry. Schedule transport for cooler times of the day whenever possible. If transporting animals when the weather is hot, make sure to follow CFIA recommendations and guidelines.
Summer heat can affect all animals, including livestock. By planning ahead and taking precautions, caretakers can help ensure animals remain healthy, comfortable, and protected throughout the warmer months.