132350
Opti-Mag 3 boluses aid in the maintenance of magnesium intake.Opti-Mag 3Magnesium Boli are moulded metal cylinders containing 100g of magnesium, weighted with iron shot. For use during the high risk periods associated with grazing of rapidly growing grass, by the provision of a slow release depot of magnesium. Two Opti-Mag 3 Boli should be given to each animal two or three days before the expected period of risk, e.g. before transfer from indoors to grass in the spring. If necessary repeat no later than four weeks. 1 bolus delivers 3g per day Only to be given to cattle of at least 300 kg bodyweight.