A mechanically ventilated barn utilizes fans to bring in fresh air while removing moisture, dust and gases. In hot weather, fans also remove excess animal heat. A well-ventilated barn is a more comfortable and productive environment for both cows and people.
We visited J&D Manufacturing in Eau Claire, Wis., to see the fan production process. The article, "How a barn fan is made," appeared on the Young Dairyman page of the May 25, 2015, issue on page 384.
Additional photos and clips from our tour have been compiled in this video. We hope you enjoy it!