There are three coloured circles on the disc, one to mark the time over the course of 12 hours, the second to record how many piglets were born alive at the time they were last checked and the third to mark how many piglets were born dead.

Three movable arrows are used to show the sow’s progress.

There is also a space at the bottom of the disc to write additional notes, such as use and timing of inducement, interventions or treatments.

To request farrowing discs and a guide to using them contact Clancy Smith at kt@bpex.org.uk or 0247 647 8792.