Table 1.
Composition of the VTM supplement1 provided to beef heifers prebreeding; company guaranteed analysis
| Item | Assurance levels | |
|---|---|---|
| Minerals1 | Min | Max |
| Calcium, g/kg of DM | 135.0 | 162.0 |
| Phosphorus, g/kg of DM | 75.0 | — |
| Sodium chloride, g/kg of DM | 180.0 | 216.0 |
| Magnesium, g/kg of DM | 10.0 | — |
| Potassium, g/kg of DM | 10.0 | — |
| Manganese, mg/kg of DM | 3,600.0 | — |
| Cobalt, mg/kg of DM | 12.0 | — |
| Copper, mg/kg of DM | 1,200.0 | — |
| Iodine, mg/kg of DM | 60.0 | — |
| Selenium, mg/kg of DM | 27.0 | — |
| Zinc, mg/kg of DM | 3,600.0 | — |
| Vitamins, IU/kg of DM | ||
| A | 661,500.0 | |
| D | 66,150.0 | |
| E | 661.5 |
1Purina Wind and Rain Storm All Season 7.5 Complete Mineral (Land O’Lakes, Inc., Arden Hills, MN); ingredients: dicalcium phosphate, monocalcium phosphate, processed grain by-products, plant protein products, calcium carbonate, molasses products, salt, mineral oil, potassium chloride, magnesium oxide, ferric oxide, vitamin E supplement, vitamin A supplement, lignin sulfonate, cobalt carbonate, manganese sulfate, ethylenediamine dihydroiodide, zinc sulfate, copper chloride, vitamin D3 supplement, natural and artificial flavors, and sodium selenite.
Postbreeding the VTM supplement was delivered as a pelleted product fed at a 0.45 kg/heifer/d (consisting of 113 g of a mineral and vitamin supplement, formulated to deliver similar levels of vitamins and minerals that were fed prebreeding, and 337 g of a carrier).