Preventing heat stress

Heat stress in cows: recognising and preventing it

24 July 2025

5 tips to prevent heat stress in dairy cattle

During hot summer days, cows can suffer considerably from heat stress, especially during prolonged heat periods. This has a direct impact on their welfare, health and milk production. In this article, we explain what heat stress is, how to recognise it and what measures you can take to protect your herd.

Heat stress in cows

Heat stress occurs when cows cannot adequately release their body heat to the environment. Cows are sensitive to high temperatures, especially when humidity is also high. Because cows dissipate their heat mainly through respiration, their internal heat regulation quickly becomes unbalanced in prolonged heat.

How can you detect heat stress?

Timely recognition of heat stress is crucial. Pay attention to the following signs:

  • Increased breathing (panting or quick flank movements)
  • Reduced feed intake and lower milk production
  • Restless or sluggish behaviour
  • Group in shade or near fans
  • Standing more than lying down (cows try to cool more body surface this way)

 

What can you do besides ventilate?

Ventilation is important, but there are more ways to reduce heat stress in cows. Here are some practical tips:

  1. Ensure constant access to clean drinking water

Water is essential for heat regulation. In hot weather, cows can drink as much as twice as much as normal. Provide sufficient drinking points with well-flowing, cool and clean water.

  1. Box cover with heat regulation

Our Dual waterbeds help cows get rid of body heat by transferring heat to concrete via the waterbed. Only when placed directly on concrete does this cooling effect work optimally.

  1. Feed at cooler times of the day

Digestion of feed produces heat. Therefore, feed during the cooler parts of the day, such as early in the morning or late in the evening. This helps avoid spikes in body temperature and promotes feed intake.

  1. Improve flow in the barn

Cows need space to move stress-free, especially when looking for cooler places. Good barn layout and smart solutions such as feed fences and cow traffic products reduce crowding between them. This promotes calm in the flock, even during hot days.

  1. Extra focus on dry cows and high-yielding animals

Dry cows and high-yielding dairy cows are particularly susceptible to heat stress. These groups require special attention, for example by housing them separately in a cooler environment and monitoring them extra for signs of stress or reduced performance.

 

In conclusion

Heat stress is a serious problem that is becoming increasingly common. Fortunately, great strides can be made in improving cow comfort during hot periods with relatively simple measures. By being alert to the signs and adjusting your management, you can protect your herd's health and production.

Curious about our heat-regulating Dual waterbeds? Find out more here!