There seems to be such a huff about pure breeding and Sop standards. Poultry is not like horses. Horses requires pedigrees to get into their prospective registries. Perhaps if they had chicken and turkey registries, lineage would matter. If you are a breeder to keep the breed pure, then lineage matters. However, if any bird from any "mutt" parents look like the breed the owner wants to show it under, the judges don't care who the parents are. If the bird meets the "looks" of the particular breed, it can win in ANY show, given how close it matches the standards of that breed. NOWHERE, is it required to show parentage for birds. Now, if there were a registry...that would be different. But since there isn't, and the shows and judges can only go by the looks of a particular bird, SOP isn't really worth the breath it takes to utter the word.
The reason breeds were created was to fulfill the wishes of breeders. More breast meat, brighter colors, smaller dogs, natural "watchdogs". These are all important things to consider when creating a new "breed". What do you want to accomplish? To me, a breed should breed true. There are several breeds of chicken that can be shown, but they don't breed true. Why is that? Because the powers that be decided they needed a way to be able to determine male from female at day one. Or the gene of a certain bird takes one or two genes to create the look, so you could end up with a black or blue or white bird, or a red, yellow or white bird.
There is a use for all animals. We all have our individual uses for our animals. A "breeder" should breed to better his/her breed. Me, I'm breeding brighter birds so I don't get them mixed up with the bronzed turkeys that are wild here. I don't plan on selling for breeding purposes, I plan on selling for meat (if i can part with them...)
Others should not be castigated for breeding for their own purposes. I like Porter's bird, especially the brighter, "new' breeds he is creating, because they breed true, whereas some of the "official' type birds don't breed true.
Not all breeds breed true. A pure blooded Appaloosa breed to another pureblooded Appy will not always throw a spotted foal. The smallest chihuahuas in the world will have some larger babies when bred to another tiny chi.
To say that we've have reached our limits for new breeds is kind of short-sighted. There will come a day when we need our animals to reach further, go faster, breed truer, swim underwater, find cancer in our owners, ...
Only time will tell where the new breeds take us, or where we will take the breeds we have...
