level of inbreeding allowed by AKC - Page 2

Sorry vk, just trying to clarify your post here.
Are you saying constant inbreeding increases genetic diveristy and reduces harmful recessives?

That's my contention if it is done correctly. Could be wrong, let's discuss.

Simplified, you have 5 separate lines free of each other, you take a male from one of these and breed it to all 5.

Have you reduced or increased genetic diversity over all 5 in total going forward?

 

Now what if that one dog carried recessive, have you reduced or increased future progeny from all 5 lines getting two recessives in the future?

Maybe punnet squares would help working it out.

https://www.hobart.k12.in.us/jkousen/Biology/psquare.htm

You're just spreading his genetics amongst many at the end of the day.

Let's say you have an organism that has a gene that enables it to survive in a hostile environment. To ensure survival of that species in that environment you want that to spread to as many offspring as possible thus ensuring the species survival.

Now replace that with a recessive unwanted gene that would have the organism dead in that environment.

Over generations your either going to ensure the species survival and it will flourish or with the unwanted gene ensure it's death.

 

I heard a couple of showline breeders say once it's hard to get good dark eye colour back once you've lost it.

Evolution has nothing to do with domestic dog breeding, actually dog breeding generally goes in the opposite direction to evolution.

Can you answer my simple questions?
 

I used evolution as an example of passing on genetics.

That's what you are talking about genetics. Doesn't matter if it's domesticated or not.

OK.

I was going to write more and show an example but I'm on my phone atm. Constant inbreeding is going to weaken your diversity and if your going to be constantly inbreeding you'd want to know what genes you're carrying recessive and dominant, and probably do a shitload of culling/neutering of anything that shows recessive. Just a quick muck around with punnet squares in my head had more dogs carrying unwanted recessives than not and even more duds you'd not touch.

I would say VK is 100% right here, you want genetic diversity available in the breed, but not in the individual dog, the only way to do that is to keep different lines available ,only way to keep different lines available is to line/inbreed, also if you keep different lines available you will have the option to do an outcross when needit

Crumbs doesn't get it so I will try one last time.

Starting with a small closed population like the gsd if you continue to outcross by simple obvious math every dog eventually in the successive progeny becomes more and more inbred by simple math.

Fast forward and there ends up just one family of dogs that can only increase in line breeding coefficient and never be reversed.

Only show dog breeders don't get this.

Farmers get it, pit bull breeders got it, houndsmen get it, herding dog breeders get it....

 

No two line bred dogs can ever be clones, diversity will never be exhausted if you breed in line and you have the option if crossing pure line bred lines.

 

Yes, vk's theory is logically correct.

Problem is, when you create 5 distinct lines through continuous linebreeding, you eventually create 5 different breeds.