Feeding Laying Hens
In order to maintain year-round egg production, both light and nutrition must be properly managed. It is important that the number of hours of light does not decrease; this will put the hens out of egg production. The hens need to be fed a well-balanced diet with sufficient calcium to provide a strong shell that will not break.
Feeds and feeding for small-scale egg production enterprises (University of Kentucky)
Principles of feeding small flocks of chickens at home (Utah State University)
How to feed your laying and breeding hens (Pacific North West extension)