Plant nutrient content and animal health issues

The list of mineral elements necessary for livestock growth is similar to that for plants. It includes K, Ca, Mg, P, S, Cl in relatively large concentrations, as well as the trace minerals Co, Cu, Fe, Mn and Zn. Animals, but not plants, also require Na, Se, and I. Several interactions important to animal health exist. High concentrations of K will reduce Mg and Ca uptake by plants and animals increasing the risk of grass tetany in animals. Interactions of Cu, Mo, and S reduce bioavailability of Cu to animals. High concentrations of S reduce bioavailability of Se to animals