| 摘要 |
An oestrus detector (100) includes a reservoir portion (135) which contains a coloured liquid. The detector (100) further includes a generally planar portion (110) that is attached to and sealed from the reservoir portion (135), except for an open or closed passage (111) in a seal line separating the reservoir portion (135) and the generally planar portion 110. In use the liquid is squeezed from the reservoir portion (135), through the passage (111), and into the generally planar portion (110), when the reservoir portion (135) receives pressure. |
