How would you raise the Ultimate Chicken? I'm bothered that they only live a few years, and as a child I was amazed at a rooster that lived up to 11 years near my house. I've read online of hens that are 20 years old, I know the "guiness record" is bullshit because nobody cares to document a chicken's life and there must be more than a handful that reach that age.

Then what kind of chicken would be needed to make the most longevous, healthy breed? Would the hen or the rooster last longer?