How to stop skin scratches in broilers.

Skin scratches are caused by broilers climbing over each other.When broilers are slaughtered and the feathers removed,it becomes obvious that skin scratches are a part of most production because of certain factors/conditions. Skin scratches are caused when broilers climb over each other,this is common in any of the following conditions ;1) broiler house is too wet. 2)over population/highly stocked 3) fewer feeder pans. 4) long periods of darkness. 5) rough handling of broilers during inspection..