Impact and Mitigation of Heat Stress for Mastitis Control.

Heat stress abatement is not difficult to implement, and at a minimum all cows should have shade access regardless of housing or pasture access. Active cooling of lactating cows and dry cows can have dramatic effects on productive function and enhance immune status as well. Whereas the method of abatement may vary depending on humidity conditions at a particular location, cooling can be achieved in any environment. Therefore, producers should emphasize appropriate heat stress abatement throughout the production cycle to improve productivity and health, including limiting mastitis.