Questions and general discussion about all flock/flock raiser food

[Happy hen lover]

Hey there! I have always fed my girls organic layer. However now I have a rooster and some pullets and I am interested in doing flock raiser for my whole flock. Anything tips/things I should know? I've read that you do have to provide oyster shells as extra calcium for the layers? Will they know how much they need? Another question is I have one week old pullets can they be on flock raiser as well? I'm hoping my older girls will adjust to there new food as they're 4 years old.

My older hens adjusted fine. Yes all can have it and I have always supplied oyster shell free choice. They just eat it when they need to. It is actually a higher percentage of protein than later feed.