Are all your birds the same age? If yes, then start gradually switching them all over to layer feed (mixing it in with their grower), so that in about a week they're all on the layer feed. I change my birds over to the layer feed at about 14-16 weeks old, roosters included (this is probably sooner than what most people would tell you, but the layer feed is cheaper than the grower feed).
When I ran out of grower feed then I switched to layer. A day or two or even a week or two of feeding them grower after they start layiong ain't going to kill them.
If you are going to switch to layer you do so when you get your first egg. There is no point in switching to a layer feed before fist egg all your going to do is over feed calcium and possible even give them Calcium Toxicity. A Grower Type Feed is designed to slow maturity down some but still allowing the bird to grow and fill out before egg production. [FONT=Verdana, Arial, Helvetica, sans-serif]Chris[/FONT]
