Also see Nutritional Myodegeneration Nutritional Myodegeneration Young Boer goat kid with white muscle disease. The patient can move its legs normally but is too weak to stand. CK and AST concentrations were elevated on serum biochemical evaluation. The goat... read more . Most kids affected by white muscle disease have been in good condition and are 2–3 mo old (range, 1 wk to 4 mo). Commonly, sudden death is associated with cardiac muscle damage. Other kids are depressed, reluctant to move, and appear stiff, with a “sawhorse” stance, or become recumbent. Muscles, especially of the hindlimbs, are firm and painful to the touch. Treatment is with selenium and vitamin E injection in acute cases.