Ontario, Ministry of agriculture, food and rural affairs > Livestock > Heat Stress in Dairy Cows ([Internet, 2018-07-24](http://www.omafra.gov.on.ca/english/livestock/dairy/facts/stressthres.htm))
When your cows experience heat stress, they have higher body temperatures and respiration rates, and increased sweating and water consumption. Their feed intake, milk production and reproduction declines.