Originally Posted by GaryDean26
The 7/8th blood rule is pretty standard for live stock registries. The requirements vary though.
For example a French Alpine Dairy Goat that is crossed out to a not French Alpine goat has to be bread back to registered Alpine goats until it reached the 7/8 Alpine blood to again gain membership in the registered Alpine Herd. At that point they cannot be registered as a French Alpine though. They are designated as an American Alpine to indicate that they meet all the breed standards have registered breedings from parent and grandparent stock that meet all the breed standards, but that they are not of the pure French blood lines. They American Alpines are usually and improvement on the French line for size, milk production, etc. but people still pay a premium for the pure French Lines because they know what they are getting that way. And can start their own breeding program from a known point.
The kinder Goats are designated as an open herd which mean you can still create the bread from scratch and register it. The First cross is with a Pygmy Meat Goat and a Nubian Dairy goat. The cross produced a medium sized dual purpose goat. The first cross is called a 1st generation Kinder Goat. Breeding two 1st generation goat produces a 2nd generation goats. Two 2nd generation produce a 3rd generation and after the 6th generation the new line is accepted into the heard as a Full Kinder. How ever any breeding back to a Pygmy or Nubian is not allowed. All selections have to be made from a Kinder goat after the original crossing. And First generation can only be from full blood registered stock.
Mini Dairy goats are also an open heard created from Dwarf Nigerian Dairy goat and a Full size Dairy goat. they produce a medium sized Dairy goat, but the rules set up for that herd are different. They allow you to breed back to the Dwarf Nigerian or Full sized dairy goat and actually prefer that the finished line be 60-75% blood from the full sized breed.
Since the Cream Legbar was accepted into British Poultry standards before 1950 it qualified as an English Heritage breed. They would make it more like closed herd status of the French Alpine. Breeding it to anything else you can never get back to the "French" Alpine Status. The new blood line is an "American" Alpine.
Like the Kinder and Miniature Dairy Goats the Cream legbar needs to have a balance between the foundation breeds (i.e 50% for the Kinder is required and 60-75% required for the mini dairy goats). Because I don't know what % each of the foundation breeds are in the Cream Legbar lets say 25% Plymoth Rock, 50% Leghorn, and 25% Chilean Hen (note: the Chilean Hens were never called Araucanas but the Cambrige Breeding program and were NOT the source of the Auracanas in the UK. The British Araucana breed was developed from unrelated stock that came later to the UK on trade ships).
If those percentages make up a Cream Legbar and we breed back to a Leghorn a couple of time we end up with something more like 10% - 80% - 10% which despite the outwards appearance would not be the same thing as you started with. It is the same way a once a French Alpine is crossed out is can never regain the French Line status, crossing out a Cream Legbar to any other breed would disqualify its English Heritage Breed Status.
I feel like this is comparing apples to oranges...I know nothing of goats so please bear with me, is there a breed that was used to create the French Alpine that could be used as the cross out? if not then I don't think this analogy relates
by using one of the foundation breeds to improve the comb(for example) once and then breed back into the line.......won't that reduce the introduced breed to a negligible percentage over time? I really haven't had time to research the thing I am looking for and I wouldn't even be able to put energy into this project until next year, but I guess I don't see things the same way.
I have just see so many issues with linebreeding(in show dogs) and even owned a close relative of the #1 dog a few years ago but the problems this boy had from intensive linebreeding was horrible. I can't seem to get it out of my head that this breed(and many others with limited gene pools) will suffer the same fate if something is not done.
well, like I said before, mine will remain pure and I will cull heavily. I will maintain a control group and definitely note any problems I find over the generations. I am also looking forward to conducting my own research on this issue. Until then I will follow along and enjoy my birds