Using a flow transmitter, the feed can, in contrast to the EasyFeed system, be prepared for several feeding lines. The feed in the feeding lines is fed directly with fresh water from the water tank on the last feeding points of the respective feeding line to be fed until the trough is empty. Since in this case, too, the water required for preparing the feed is pumped into the mixing tank via the respective feeding lines to be fed, no process water tank is necessary here eithe