I'm new to the world of actually breeding chickens, so I apologize if this is a novice question, but, if the breeder chooses to do so, is there any reason to not cull any roosters that are too rough on the hens? (I'm only asking on this thread as it's the current topic of discussion)
Obviously they need to have some interest in breeding, as if they don't, there's probably something hormonal going on and they may well be infertile anyways. Besides that and space limitations, I can't think of any reason it would be bad to cull according to desirable behavior (as well as conformation, color, body size, etc)?
I only ask because I am very... intolerant of any rough behavior, and intend to only have two separate areas, so I will not be splitting roosters and hens, anyone who is nasty is just going to get culled, and anyone who doesn't meet what I'm aiming for I'll sell, and I just want to make sure that will work effectively and not backfire.
LOVE the original posters mention of Form vs Function, we have this discussion in the horse world, especially in terms of [only] breeding horses that can actually hold up to the performances we are asking of them.
You've already gotten some great feedback and I don't want to be redundant so I'll only add one thing - maturity. Don't be too hasty in culling a cockerel because he's rough with the hens because the problem may be that he just hasn't figured out how to behave yet. Sometimes a mature and/or assertive hen will teach that boy a lesson right quick, but other times you may just need to keep him separate from the hens for a while until he learns to court them, even through hardware cloth or other materials. I had one cockerel that even at just shy of a year old was a horrendous rapist. I kept him in a separate pen that allowed him to interact with the hens but not touch them. When I let him out he was like a completely different animal and positively doted on the girls, who now surrendered willingly to his advances.