The percentage and type of protein in a particular poultry ration is set by the rations intended use. Starter/grower, layer, breeder, broiler/finisher all has different percentages of protein.
Yes I do suppose that there is a bit of greed involved because if the ration in question did not produce the expected outcome or results in the hen house, then the milling company's customers would buy their chicken feed from a different milling company. In other words from a milling company whose chicken feed fulfilled their hens' nutritional requirements.
In my humble opinion there are few "knowledgeable" feed store employees today, at least ones who can understand a joke about back yard chicken people, so don't go buying your chicken feed with your 'tam' rolled up in your wee little hands and your feet tracing figure eights in the dust. Chances are that the clerk at most big box feed stores knows less about feeding livestock than the girl at the Burger King drive through window knows about butchering beef.
Yes I do suppose that there is a bit of greed involved because if the ration in question did not produce the expected outcome or results in the hen house, then the milling company's customers would buy their chicken feed from a different milling company. In other words from a milling company whose chicken feed fulfilled their hens' nutritional requirements.
In my humble opinion there are few "knowledgeable" feed store employees today, at least ones who can understand a joke about back yard chicken people, so don't go buying your chicken feed with your 'tam' rolled up in your wee little hands and your feet tracing figure eights in the dust. Chances are that the clerk at most big box feed stores knows less about feeding livestock than the girl at the Burger King drive through window knows about butchering beef.