How do I find info on these nubians??

[SheepGirl]

I have had my ram breed his mother, his maternal half sister, and his twin sister. (And he bred his mother again this year - read my thread.) No deformities, though I did lose three of the four lambs to an (at the time) unknown cause. I later consulted the vets at Pipestone and they told me that inbreeding does not cause any problems, and so the possible cause would probably be a selenium deficiency (white muscle disease) based on the symptoms I described. First time (and only time) we've had white muscle disease.

So I think a half sibling breeding would be okay.

 

[DKRabbitry]

inbreeding does not cause any problems

That is kind of a broad statement... it really doesn't cause any immediate problems. If done TOO heavily, the genes start doing funky things and you start ending up with smaller litters, unhealthier stock, weird recessive genetic things, or genetic mutations. 1/2 Brother to 1/2 sister won't do any of that, worse you will probably get is say their sire has a problem with bad pasterns in his genes and a kid gets a double dose of that and whammo, you got crappy pasterns. But you just have to cull for those things to keep the breed better. Most breeds were created, saved or vastly improved with heavy inbreeding. Then you get some (mostly in the dog world) where they are inbreeding so willy nilly and not culling that it creates HUGE genetic health & temperament problems. On that same note, you can breed genetic health problems without inbreeding too... but there are a million and three sides to every coin. I am gonna just stop there

ETA: From my understanding 7-8 months should be okay to be bred, as long as she was healthy and big enough.