I am starting a dairy flock. I started with 10 katahdin ewes and 1 east friesen ram. They are lambing now. When I go to breed the lambs should I breed again to the ram or would it be better to keep one of the ram lambs to breed back to? Is there enough genetic difference between a ram and his son's genes that it would matter? I am going to keep one of the ram lambs regardless as a companion for the ram. It is just a question of if I breed him or wether him. Thanks.