We have blood tested our ewes and have came back with mega high levels of iodine and low levels of selenium vet has advised that we jag all lambs at birth with selenium/vit e ewes have been bolused with mayo 4 in 1! Any other suggestions to get Sel into them before lambing without to much iodine? Ewes had access to crystalyx and reading the label has high iodine content! Ewes are getting a good nut and due to start lambing outside mid march so not a lot of time anybody had any experience of this before? Any advise greatly appreciated