Slightly off topic but still in the realm of the judicious cull, I know that much has been said about hatchery stock and how they've introduced leghorn blood into many of the breeds to increase laying, but that's not uncommon and was just how some breeds were developed and other breeds improved upon back in the day. I don't know that it's such a bad idea to still utilize these methods of breeding, though not on the mass scale of the hatcheries. I think that's their only problem...they are not culling and breeding carefully to use these traits effectively while still maintaining the integrity of the original breed.
For instance, the Australorp. It was developed when breeders were attempting to increase laying performance of imported Orpingtons.
Of course, the BA is no longer considered a true Orpington and has become a breed in its own right, but think of what they were trying to do. I think we have gotten so hung up on breeding to the standard for some breeds that we've forgotten that these original breeders were trying various other breeds in their flock to improve this or that trait in their chosen breed. Mostly the laying, feathering or meat characteristics.
I think that's what bothers me the most when I see folks disparage hatchery stock so badly. Yeah, they aren't ideal and they are not often fully resembling their breed of origin but I can see where one could incorporate their superior laying genetics into a standard bred flock and improve both in the doing of it. Half the work is done and we need no longer breed full leghorn, Minorcas, Langshan blood into the breed, though I'm sure those traits will still pop up now and again and have to be bred out. I think it would just take a steady hand, a good eye and judicious culling to gain greater laying productivity in our standard bred stock.
At least, that's my amateur take on it all and I could be just dreaming pipe dreams here but I still don't find hatchery stock as repugnant as most folks. They may be mutts but they are mutts that work and I love a working animal. I don't feed anything that doesn't earn its keep here, so utility is high on my priority list.