How to effectively cool cows is an ongoing conversation. One option gaining interest is evaporative cooling with the use of cooling cells. We know cows are most comfortable at temperatures in the range of -5°C to 15°C. However, in summer, it is impossible to get temperatures to this optimum range. What could we gain if we could get it much closer? “I believe the biggest benefit is any time you can drop the temperature in the barn during the warmer months, let’s say when temps reach above 20°C outside, the cows’ dry matter intake will not drop as much,” says Terry Lebold, Lebold Farms LTD.