Bolus for supplying biologically beneficial substances to ruminant animals

摘要

A wax bolus for ruminant animals having its melting point controlled so that the bolus is solid and stable at room temperatures but surface soft when present in the reticulo-rumen, whereby in use a beneficial substance is released from the bolus as the surface soft bolus rubs against or repetitively attaches to and detaches itself from the stomach lining or solid material present in the reticula-rumen.