Abstract: Method for processing and manufacture of chicken feed in using hatchery waste products, egg shells, dead chickens and spoiled eggs, blood, offal, by-products of waste water treatment, and fat in which there is a tank to provide intake and mix the various ingredients of a chicken feed, feeding mixed ingredients to cooker or dryer tanks or ovens over a vacuum line, and providing for ancillary or auxiliary venting through a vacuum blood storage tank, and in which hatchery waste and other material can be conveniently inmixed into a receiver tank in mixing ingredients for cooking into a chicken or animal feed.