As summer temperatures soar across Victoria, farmers are being urged to take extra care of their livestock to prevent heat stress, which can severely affect both animal welfare and productivity.
Cattle are most comfortable between 5°C and 25°C,
while adult pigs prefer a narrower range of 18°C to 20°C. High-producing animals, such as dairy cows, are particularly vulnerable, and poultry can succumb to extreme heat on scorching days.
“Animals divert energy to cooling themselves during hot weather, which can lead to reduced feed intake, slower weight gain, lower milk production and even declining fertility,” Dr Jeff Cave, Senior Veterinary Officer, said.
Humidity compounds the problem, intensifying heat stress even at moderate temperatures.
Farmers are advised to check stock daily for signs of heat stress, which include panting, standing rather than lying down, seeking shade, increased drinking, and reduced appetite.
Key measures to protect animals include providing unlimited access to shade or shelter, ensuring cool, clean drinking water is always available, avoiding movement during the hottest part of the day, offering high-quality feed in the cooler evening hours, and having a fire plan in place with someone to check on stock if the farmer is away.
By making these adjustments, producers can reduce the impact of heat stress and safeguard both animal welfare and farm productivity.
For further advice, contact your local veterinarian, Agriculture Victoria animal health staff, or in New South Wales, your Local Land Services.
