COPD (Chronic Obstructive Pulmonary Disease) is a progressive disease in humans that makes it hard to breath. In general, the airways to the lungs become congested, restricting air exchange.

As I visit swine production facilities across the Midwest, I routinely see this same type of disease in production facilities. A very large number of production facilities (sow units, nurseries, wean-finish and grow-finish) have major restrictions somewhere in their ventilation system that results in higher electric expense, curtain hang up and doors slamming due to very high static pressures, curtains opening when it is colder outside than intended, etc.

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