damns

Hi all, One of my weathers is copper deficit, actually I think they both are. I have 2 wethers one is 40lbs, 50lbs and 45lbs. The 45 and 40lb are a year old. And the 50 lbs stud is 3 years old. I keep them in the same pen, however, I'm worried about the copper deficiency. Any suggestions on...