Milk bars are designed to allow each calf gets his own portion when nursing

Milk Bars are designed to feed any type of calf passive and/or aggressive.  Milk Bars are designed to make sure all nursing calves get their own portion. Each calf gets his own  portion because the milkbar nipples are designed to feed a low and slow amount.  No matter how aggressive the calves are they can only drink so fast, so they will stay on the same nipple.  Also keep in mind, for example, having only ten calves in the pen with a 10 compartment milk bar feeder is the best option, so each calf has his own nipple.  Once the calves start drinking faster than 1 minute 45 seconds they need new nipples to avoid drinking too fast and cross sucking.