The impact of heat stress is cumulative. One event may be easy for a cow to bounce back from, but over time, repeated bouts take longer recovery and hinder profitability. Nutrition is a valuable tool to help mitigate the effects of heat stress and maintain herd productivity.

How do we make sense of all these options available to dairy producers, when fan manufacturers and sales reps are all sure that they are the only ones with the best possible fan to offer and everything else is inferior to their product? The first thing to understand is that there are two main types of fans – exhaust-style fans and circulation-style fans.