I don't want to rain on your parade, but!
First things first, 99.9% to the tenth power of all poultry antibiotics are administered in the chickens' drinking water not in the chickens' feed so Miller's claim and your belief are only technically correct.
Originally Posted by Barry
Second thing, the animal protein requirement for growing healthy chickens is high and complex. I have seen chickens almost kill each other over such treasures as fresh cow patties, baby rats, mice, dead skunks, and live snakes up to about 18 inches long. You will have difficulty raising 10% of your baby chicks on vegan chicken feed unless cannibalism is high. (Read the post about chickens keeping wax moths in check)
Third thing, this ad is an elaborate bed bug letter, except Miller used the fact that the Old Order Amish don't use electricity to hook you on a vision. They do however use small diesel engines (no spark plugs) and leather mill belts to pull ventilation fans, and propane, LNG, natural gas, coal, or wood to fire the brooders. The Observant Mennonites here use similar devices, and also use them to power their sewing machines, water pumps, and sawmills, MP2T.
Forth thing, Miller I assume is a member of the National Poultry Improvement Program. It is required in order to be in the Interstate poultry business. They at a minimum must vaccinate, and test to be allowed to ship their eggs to the hatchery, their baby chicks to the growing houses, and their fryer/broilers to slaughter or market.
Think of it as a Federal government AFB free certificate needed every time a bee leaves or returns to the hive. Then again they can buy hatching eggs with Kryptonite in them and still make the same claim, as long as the hatching egg was laid by a NPIP hen and contains only NPIP rooster spermatozoa.
This said, let's all go back to those trilling days of yesteryear, if it makes you feel good, do it.
Scrapfe---Never believe anything in politics until it has been officially denied.--Otto von Bismarck.