Grower v's starter/grower?

[Auscal]

I will be feeding 2 month old, 2 year old layer, and 2 1/2 year olds that have finished laying. Until the addition of the youngster I was just feeding layer. I would like to switch to grower with oyster shell available. I prefer to feed organic. I am unable to find an organic grower, just an organic starter/grower. Is this "the same thing" just labelled differently? The protein level is min 18%. Will it be Ok to feed th eolder girls this also - or should find another alternative?

 

[Eggcessive]

Yes it is okay to feed any chicken of any age up to 20% protein. All flock or flock raiser is sometimes easier to find un-medicated, and is 18-20%