I don't know about that iddee....
We expect our goats to have alot of natural anti-bodies....the majority of my herd has never had anti-biotics and we show, therefore are hauling our animals around and exposing them to various germs/diseases. Our 6 yr old doe has never had anti-biotics in her life and she's going strong.
We rarely have kidding problems...we've had one bad kidding in the last 6/7 years. We've only ever lost one kid after birth, 3 months of age(suspected genetic problem). We've had one kid born dead (the one bad kidding we've had).
We generally worm 3 or 4 times a year.
I'm not the only herd out there with a similar situation/results.
Michael some breeds are naturally more resistant to worms (Tennessee Fainting Goats are a good example)...does your neighbor milk his Nigerians?
I don't agree with waiting till they are half dead to worm them...first off if you wait till they are that overloaded with worms...the actual worming process can kill them. Just my .02!