Poor ventilation leads to wet barns and frost build-up on the ceiling.
The solution is bringing extra fresh air into the barn to help dry it out. One way of ventilating a calving barn uses an uncomplicated design with simple controls and adjustments. The design features a plywood duct that distributes a blend of fresh and recirculated barn air. Inlet and exhaust fans are controlled by manually operated fan speed controllers. If more animals are in the barn, it's a simple process to turn up the fan speed to draw in more cold air.