Are your cows underperforming due to heat stress?

For dairy cattle, the classic threshold at which heat stress affects performance is often quoted to be at a temperature-humidity index (THI) of 68, which, in the UK, would be 22°C. We are now aware that fertility can be affected when the THI exceeds 57, which would typically be just 14°C in the UK where relative humidity is typically 60%. Studies have shown that the swing from 14°C to 22°C can cause 20% of eligible cows in a year-round calving herd to slip a cycle. If temperature increases above this level, the effect on fertility is far greater. These same studies estimate that at temperatures of 27°C, now a relatively common occurrence in UK summers, the proportion of cows slipping a cycle can increase to 43%.

CoolCow helps regulate core body temperature by hydrating the cow at a cellular level and by restoring the electrolyte balance. By cooling them down and maintaining rumen function, dry matter intakes don’t faulter. The aim is to keep cows comfortable and enable them to maintain their normal pattern of lying and eating so that production and well-being is maintained throughout the summer.