Enzootic ulcer in the back of the tongue in cattle after ingestion of hay containing panicles of yellow bristle-grass.

Chronically recidivating enzootic ulcerations in the tongues of numerous mi lking cows in the Po river plain area in Italy. The animals were permanentl y kept indoors in cubicle houses and fed by hay containing high amounts of ripe yellow bristle grass (Setaria glauca (L.) BEAUV. [= S. pumila POIRET]) . The panicled parts of the culms were found to be the cause of the massive injuries.