Diagnosis and treatment of retropharyngeal injuries in lambs associated with the administration of intraruminal boluses.

Describes the clinical signs, diagnosis, treatment and outcome of retropharyngeal injuries associated with the oral administration of an intraruminal bolus to young adult lambs. Observation that the administration of a larger bolus did not result to pharyngeal damage; Factors influencing the occurrence of pharyngeal damage; Prognosis after the surgical removal of the bolus.