White Muscle Disease or stiff kid disease is caused by a deficiency of selenium, vitamin E or both. Soils in Pennsylvania are selenium deficient, so livestock producers should supplement mineral mixes or rations with additional selenium or give does a selenium injection. It is helpful to also include vitamin E with the injection because selenium and vitamin E work together to prevent the disease. Be cautious when adding selenium to rations or giving an injection, as the window between the requirement and toxic levels is small. Characteristics of the disease include stiffness in the hind legs, an arched back and inability to stand. Low selenium levels during pregnancy may also produce kids who have not develop a sucking reflex. Kids who are not able to suck will starve to death very quickly.