Airflow means in the form of fans (80) are provided in the bulkhead (11) at the front of a transporter. These fans (80) supplement the natural airflow since they direct the airflow in the transporter in the same direction as that produced naturally by movement of the trailer. The transporter may have a plurality of levels to support livestock on different levels to increase the efficiency of transporting livestock. Each level may have a pair of fans (80) in order to provide the airflow along the level. The present invention may be incorporated within a transporter comprising an integral trailer and cab and also within a trailer which can be separated from and secured to a cab unit. The airflow means take air from within the transporter and emits the air into the external atmosphere.