Suspected Se-vitamin E deficiency in heifers.

A group of grain-fed heifers became stiff, and some sternally recumbent, upon exercising after winter confinement. All but 2 affected heifers gradually recovered after IM injections of Se-vitamin E and IV infusion of Ca-Mg solution. Though serum assays failed to detect low Se levels, the presumptive diagnosis was based upon clinical signs and a good response to Se-vitamin E treatment.