Heat Stress in Cattle
August 2, 2024
The critical temperature for cows is around 29• and their rumen is constantly producing heat. The risk also increases when the humidity is high.
Knowing the signs:
• Panting and increased respiratory rate
• Reduced feed intake
• Reduced rumination
• Reduced milk yield
• Increased SCC
• Increased rectal temperature
Reducing the risks:
• Provide plenty of shade and access to water
• Switch on fans or increase their speed or try to turn out to any windier fields where possible
• Only handle cattle at cooler times of the day
• Minimise the time spent in holding pens or their walking distance between parlour and fields if possible
• Have water sprays or sprinklers on
Clip hair off backs
• Ensure they have adequate fly prevention on as fly infestations can make the cows bunch together more
Other things to consider:
• The heat also causes an increased risk of mastitis
• Worm larvae can become trapped in faeces during the hot and dry weather. Beware that when the rain returns, it could cause a release of larvae on to the pasture leading to outbreaks of PGE (Parasitic Gastroenteritis)
• Blue Green Algae: Pay attention to fields with ponds or fields where the water troughs haven’t been used for a while. Make sure all troughs are regularly checked and that you can see to the bottom
If you have any concerns or questions, please give our team a call on 01373 451115.