Me and a lot of others run this rule of thumb.
You only feed a layer type feed to hens that are laying eggs, if they (the hens) are not laying do to age, health, sex, molt, environment, etc. then they are on a non-medicated starter, grower, or starter/grower.
Layer feed is designed for hens that are laying, the high amount of calcium in a layer feed can cause a number of health problems to non-laying fowl.
You only feed a layer type feed to hens that are laying eggs, if they (the hens) are not laying do to age, health, sex, molt, environment, etc. then they are on a non-medicated starter, grower, or starter/grower.
Layer feed is designed for hens that are laying, the high amount of calcium in a layer feed can cause a number of health problems to non-laying fowl.