Once calves reach about four weeks of age at this dairy, they move into a group pen of eight calves and drink from a mob feeder. To facilitate feeding, dairy personnel took a large plastic tank and mounted it on the flatbed of a small truck. Then, they installed a pump that mixes the milk replacer in the tank. Next, they installed a flow valve near the end of the hose to turn milk flow on and off.

Now, feeding the calves is a one-person job. The tank is filled with the prescribed amount of water; milk-replacer powder is added, and the pump is turned on to mix everything up. The employee drives the truck right next to the fence and opens the flow valve to fill each mob feeder for the calves.