Has the role of epigenetics taken into account, or to be fair, can be recognised to a certain degree this role? A dog is judged as worth for breeding after a certain age, by which time epigenetics will have participate in this organism's attitude and development.
Would you say that for eg a male will produce different results as breeding material at the age of three compared to the age of nine?
Finally, if cost isn't an issue, and assuming that at a younger age a dog will pass better genetic material, always because of epigenetics, would it be logical for a breeder to store semen from an early age and dispose in the future, or use, according to the dog's achievements?