I know with Pygmy's (don't know about nigi's) the problem is that even with normal sized pygmy bred to pygmy births they baby can get caught in the mother's pelvis. Mini's are notorious for birthing problems. We have taken the African Pygmy as it was in the wild and bred it to standard so that it now has trouble birthing babies without assistance.
You at the very least need to start assembling your birthing kit.
1)Number of your Vet (have it on the fridge, in your cell phone, in the birthing kit, you'll be nervous so all three places is best)
2)Lube, a lot of it, you'll probably need it.
3)Long gloves, the kind that go up to your shoulder, just in case you have to get in there go move anything around, grab a hoof etc.
4)Betadine, or iodine for dipping the cord
5)Old towels for rubbing the baby dry
6)a source for milk in case you need to bottle feed
7)appropriately sized nipples and bottles
8)colostrum replacement, a source for it or be prepared to milk it.
9)kid paste - for weak or hypothermic kids
10)calcium drench - for weak moms this will help muscle tone, help with pushing, and help them push out the placenta after birth.
11)a kid puller (it's a loop that will help you grab the legs of the kid en utero and pull the baby out)
Ok, that's your basic kit
I would still recommend aborting. Breeding a small breed buck to a large breed doe is done all the time, but to breed a large breed buck to a mini is dangerous not just to the babies but to the mother. The birth may be impossible without surgical intervention if the babies take after their father in build, or frame even if they don't gain size en utero. If any part of them is too large to pass through the pelvis it's game over, c-section or put the doe down.
Laney
