DEVICE FOR USE IN THE MASSETER/GALEA PART OF A RUMINANT'S GASTER

摘要

Drug-delivery device for controlably releasing a drug to a ruminant is comprised of a coated steel cylinder (2) open at both ends, of sufficient specific gravity to be retained in the reticulo-rumen portion of the ruminant stomach, and having a retaining means (3) therein to prevent premature expulsion of a formulated drug core.