| 摘要 |
<p>There is disclosed an insert (2) for the orifice (3) of a ruminal bolus (1). The insert (2) fits within the exit orifice (3) of the ruminal bolus (1) such that the medicated paste (8) being discharged passes through the insert (2) creating a back pressure within the paste compartment of the bolus (1) which improves the performance of the bolus. The insert (2) also prevents foreign objects from becoming lodged in the orifice (3). The insert (2) consists of a grid-like series of openings (21) with insert members (22) extending into the orifice (3) for a significant portion of the total length. Integral with the insert is a flange (13) which secures the insert within the orifice and prevents it from being removed from the orifice or from being driven into the orifice.</p> |
