We feed the pigs our fresh goat milk. Butchering time is here and we've kept excellent records of all purchased feed, hay & grains. We've kept track of the amount of goat milk that they've consumed (over 700 gallons of milk) but we're stumpted as to what monetary value this is. Current cwt for cow milk is $21.63 in NY. Are we out of line to use this figure? Or do you have another suggestion?