By Harold K. House, M.Sc., P.Eng.Agricultural Engineer, DairyLogix Calf barns or rooms can be ventilated naturally or mechanically. Natural ventilation combined with a positive pressure ventilation tube (PPVT) system provides the best of both. There are four primary goals for ventilating calf barns or rooms: Remove moisture in cold weather, Remove heat in hot weather, … Continue reading Combining natural ventilation with positive pressure ventilation in calf barns