I asked Bob Blosl one time how I could breed closer feathers on my Light Sussex. He replied that I should breed for 25 more eggs a year from my hens. When I did that, the closer feathering would follow on the coattails of increasing the egg productivity.
Best,
Karen
Qty. of eggs will not tighten the feathers. Breeding birds for closer feathering is selecting those individuals that have it. How hard that is depends on how much variability there is in the offspring.
The surest route and fastest route, is the most direct route. We do not want to run out on a bunch of rabbit trails, and get lost doing it.