I know I'm coming in a little late, but I wanted to throw in my two cents. Right now I am feeding 2 bummer lambs and I have fed a few others over the years. As far as getting mom to accept a twin that she rejected, I 've never been successful. I usually can get at least one feeding of colostrum from mom, but I have a Jersey milk cow so I always have colostrum on hand in the freezer which I use on the lambs for the first 24 hours. From there, I start them on lamb milk replacer until they are "over the hump" at which time I start replacing half with raw Jersey milk. Eventually, I switch over to all Jersey milk (high fat!) until weaning. I've often read that you should not feed cow's milk to lambs, but I think I have been quite successful using it because of the high milk fat in Jersey milk.