I calve in May and June. What are the basic minerals my cows need before calving if they are on rye and triticale?
Need to focus on magnesium mineral supplementation to prevent grass tetany. It would be good to begin supplementating Mg about 30 to 40 days before you turn out to grazing cool-season pastures. Once the early, high grass growth phase and the weather stablizes, then tetany concerns should decrease.