Table 1.
Composition of mineral supplement consumed by cow–calf pairs grazing native range; company guaranteed analysisa
| Item | Min | Max |
|---|---|---|
| Minerals | ||
| Ca, % | 13.5 | 16.2 |
| P, % | 7.5 | – |
| NaCl, % | 18.0 | 21.6 |
| Mg, % | 1.0 | – |
| K, % | 1.0 | – |
| Mn, mg/kg | 3,600 | – |
| Co, mg/kg | 12 | – |
| Cu, mg/kg | 1,200 | – |
| I, mg/kg | 60 | – |
| Se, mg/kg | 27 | – |
| Zn, mg/kg | 3,600 | – |
| Vitamins, IU/kg | ||
| Vitamin A | 661,500 | – |
| Vitamin D | 66,150 | – |
| Vitamin E | 661.5 | – |
aPurina Wind and Rain Storm Mineral (Land O’Lakes, Inc., Arden Hills, MN). Ingredients: dicalcium phosphate, monocalcium phosphate, calcium carbonate, salt, processed grain byproducts, vegetable fat, plant protein products, potassium chloride, magnesium oxide, natural and artificial flavors, calcium lignin sulfonate, ethoxyquin (a preservative), manganese sulfate, zinc sulfate, basic copper chloride, ethylenediamine dihydroiodide, cobalt carbonate, vitamin A supplement (proprietary), vitamin E supplement (proprietary), and vitamin D3 supplement (proprietary).