Show poultry grades changed two important changes of interest to poultry men were made in poultry plans at a recent annual poultry imbro improvement conference in chicago chicag the first was the establishment of a new ch chick 1 ck grade known as U S verified the intermediate grade between U S approved and U S certified tidied the second was a ruling r requiring e hatcheries and dealers t to 0 submit copies ot of proposed advertising literature to the official state agency before they are sent out |