| 摘要 |
<p>The invention concerns a catheter for artificial insemination of birds, in particular of turkey-hens, consisting of a plastic tube obtained by extrusion: each of the tube (10) ends (11) is shaped such that the tube (10) external diameter (24) at its ends (11) is reduced to a value ranging between two-thirds and three-quarters of the tube (10) internal diameter (23), said reduction being obtainable by cold forming at the extruder outlet.</p> |
