Only a fool would use his food for fuel.
Even assuming that retail milk prices were determined by the dairyman's cost of production (they aren't), the influence of the price of corn would be minimal. A Holstein dairy cow will produce about 8 gallons of milk per day. A $.50 increase in the cost of corn translates into an average increase in the cost of a lactating cow's daily feed ration of about $.15, or $.02 per gallon (and even that assumes the dairyman has no ability to substitute other ingredients such as ddg's in the ration).
>Only a fool would use his food for fuel.<
Particularly when it takes more petroleum to produce the equivalent amount of ethanol.
Talk about the dog chasing its tail!