Hello Jackie, you were early this morning!! Personally, I would not put a ewe to the ram until its at least a year old. earlier than this is, I think, too young, although I do know farmers who do put ewe lambs in with the ram and they do produce lambs, as young as they are. Another issue is size. If they are still quite small it could be detrimental to their development, not to mention the damage which could be done by a large heavy ram. It will be interesting to see what the others on this site do in these circumstance. Cheers.