With temperatures recently topping 70 degrees Farenheit in Southern Minnesota, many pork producers will be unprepared for change from winter to summer conditions. Fortunately, while the ventilation systems may not be fully prepped for their summer cycles, the physics of heat storage will keep pigs comfortable.

Concrete is a great heat ‘sink’. In the early 1980’s when there was a surge of interest in solar heating of farrowing houses and nursery rooms, used concrete slats were a preferred heat storage media. Their large thermal mass means they change temperature slowly.

With warm air temperatures predicted tomorrow, the large amounts of concrete in today’s production facilities means the facilities will remain relatively cool for the pigs. This is why production facilities respond differently to the same air temperatures in April and October.

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