A water soluble nutritional supplement for ruminants is provided that comprises a highly soluble calcium component, a phosphorous component, a potassium component, a copper component, a vitamin C component, and a complete vitamin B complex. The spindle motor also has a ferrofluid seal to prevent any incidental oil emissions from the bearing from entering the drive. Multilayered materials including operational material which is sensitive to bend strain can be constructed, in which the bend strain in the region in which such operational material is located is minimized. The viscosity of the preparation is in a range of 30 to 300 mpa\xb7s and the pH value is in a range of 2.