Polioencephalomalacia (PEM) is a common
metabolic disorder characterized by neuromuscular
alterations of goats that are thiamine
deficient. This disorder may be acute or subacute
in nature. Adults and young animals are
equally at high risk for developing the disorder.
Goat polio is usually seen in animals that are
under a high nutritional management condition
such as feedlots, or animals on lush pasturage
fed with highly concentrated rations.