For milk testing, many Nigerian does stay in milk for 305 days prior to drying off for kidding. And yes, I have seen some that can milk through, but usually they are dried off to give them a rest before kidding. For people who didn't want kids though, they just kept milking. A lot of that is from really strong genetics of heavy milkers who just don't want to dry off. I had a few like that.I've never seen a Nigerian that can milk though more than 8 months...