Now is a good time for producers to assess their heat stress management programs as heat stress can impose a significant financial and welfare cost to a business.
Heat stress has been shown to decrease milk yield by 10 to 25 per cent, feed intake by 10 to 20 per cent, decrease six week and 100 day in-calf rates, drop natural and artificial insemination conception rates, and increase the risk of clinical mastitis in higher yielding cows.

To manage the impact of heat stress the following actions can be taken