When does condtioning/training pup start?

You can argue genetics vs. training all day long. I KNOW genetics play a key role..I know you can just start taking a pup to the woods at the appropriate age and its genetics will dictate how fast it becomes a serviceable hunting dog.......I also have seen firsthand how starting puppies in a pen with a very small shoat at a very early age benefits in the overall training of the pups. In my opinion the pups turn on faster and become serviceable hunting dogs faster. I'm not saying starting early over rides genetics and will make average blood great but it sure doesn't HURT.