New calf barns were recently built in Canada, using the automation system from Hotraco Agri. The ventilation system and manure scrapers are completely controlled by the cutting-edge Thomas® system. Pushing the manure under the grates drastically reduces the NH3 level in the barn. The scrapers are run 12 times a day by a timer. This comprehensive solution maintains an optimum climate and ensures the good health of the calves.