Apparatus and method to feed livestock

A method for distributing a feed formulation from a mobile feeding apparatus, comprising a mixing assembly comprising a first auger that receives a feed from a feed container, a first feed additive removeably disposed in a first feed additive container disposed above and in flowable connection with said mixing assembly via a first vertical conduit which includes a first valve, a second feed additive removeably disposed in a second feed additive container disposed above and in flowable connection with said mixing assembly via a second vertical conduit which includes a second valve, a second auger to convey said feed in optional combination with said first feed additive and/or said second feed additive from said first auger to a discharge chute, said method comprising:

• disposing said portable feed preparation apparatus adjacent a designated feeding site;
• disposing said feed into said mixing assembly;
• and
• opening said first valve thereby causing said first feed additive to flow from said first feed additive container, through said first valve, through said first conduit, and into said mixing assembly;
• dispensing said feed in combination with said first feed additive from said portable feed apparatus to said designated feeding site.