Walt, I remember reading that to get birds with straight keels, they needed a broad roosting place instead of a narrow one. Have you, or any other breeders here, ever heard of or had experience with this? Do you keep roosts in your grow-out pens? Is a dip in the keel indicative of anything besides genetics?
My experience is that it is genetic. Everyone like to blame the incubator, roost, etc, etc, but 99% of this has nothing to do with where or how a bird roosts. I have raised a ton of birds and that is what makes me say that it is genetic. My roosts are whatever I get get to span the width of the cage. I have pipe, different widths of wood.....you name it. The grow out pens all have roosts cuz I use them for other purposes after raising the young.
Walt