How long on medicated starter

[CEChickenmama]

Hello all. My babies seem to br growing great and are happy. Wanted to check to see how long they should be kept on a medicated starter?

 

[nuthatched]

How old are they and how long have they been on the starter? You can switch them to normal grower /starter now.

 

[CluckerFamily]

I normally purchase chick feed that is called starter/grower, this way I just keep using the same bag until they start laying eggs.
How old are the chicks?