Hi - thanks for the replies. They are in due to the fact that they started lambing when we were away on holiday 2 weeks ago, and my mother who was looking after the animals panicked, and called the local farmer, who then put them in the stables so he could help over the next week. It was our first experience of lambing, and he was often coming up in the evenings, so it was just easier to work. I want to get them out as soon as possible, but we are having to re-fence a paddock we want to put them in because of the lambs being so small. We are hoping they will be out next week, and then it will be problem solved!
It's just while they are in I have been worrying. We have only had the ewe's for about 3? months, so haven't really experienced having winter feeding. They have just been on the scrub in our marl pit up until lambing. (We didn't even know there was a possibility they could have been pregnant, as we were not told they had been running with a ram when they were purchased). The copper problem was probably caused by previous owners of our wether. He was a stray so nothing was known about his past, and also in the animal shelter he came from, he was rotated in a paddock there with a pig, for a short time. There is no slurry where they graze as it is not a paddock, it is a wilderness of an abandoned marl pit, so full of gorse, trees, bramble, with smatterings of grass. Impossible to spread anything on really.
So I will just stick with the hay and the tubron then. Thanks so much.