It is the same for any breed that does not have white in the standard. It is called the Z factor. You are not supposed to breed any dogs that have the Z factor due to the problems mentioned above. Not all white's will have those problems, but it is pretty normal for them to show up. I do not agree with killing them because they are white or have the problems to go along with it. I think that placing them in good home with some one who is willing to work with them and love them is a great thing. But also agree that they shouldn't be bred just to get the "rare" whites. I have Dobermans and the smae applies to them. There is a lady up the road that advertises in the local paper- Rare White Dobermans....It always makes me cringe.
Z factor is the white factor and a genetic setback. White dobermans have serious health problems and most GOOD breeders will avoid producing any dog that is sub-standard than a good healthy doberman, and will avoid breeding to any dog with z factor in it. Once you breed to a z factor dog, all puppies in that litter are registered as z factor dogs, even if the other parent is clear. It is a fault and sub-standard in the breed.