My daughter has raised sheep for a few years now and we band tails and testicles and give shots on the 2nd - 3rd day. We have found this to be the least traumatic to the lambs. The shots need to be given again in 2-3 weeks. If the lamb is to be shown (4-H or FFA) then the best place to give shots is under the arm as occasionally it will cause a lump and this way it is hidden, otherwise neck or hips work for us.(posted 9007 days ago)We give CD&T as it is required for showing and in our area it is just safer. We have old fences that are rusty and the sheep get their share of nicks, etc.
Now that my daughter is going to go to college, the sheep are going to pay her tuition and I don't mind taking care of them while she is away as they really aren't any trouble - except at lambing time.