Evaluation of an ear flushing technique as a postmortem measure of infestation of Raillietia auris (Leidy) (Acari) in cattle.

The effectiveness of recovery of Raillietia auris by flushing the ear canals of recently slaughtered cattle with 20 or 40 ml (two flushes of 20 ml) of water was evaluated. Flushing the ear canals with 40 ml is recommended as a measure of prevalence and density of infestation of Raillietia auris.