In most areas, spring calving is well under way, so now is a good time to be very aware of how much mastitis is occurring at calving time, and to be ready to act if necessary.
Countdown has given us a set of "triggers" to indicate when there could be a significant problem which is likely to be worth looking into.
The trigger point for clinical cases of mastitis at calving is 5%.
For this purpose, the calving period for each cow (or heifer) is defined as two weeks before calving until two weeks after calving.
For every 100 cows that calve, if you have 5 or more cows that develop a clinical case in the first 2 weeks after they have calved, it is likely that there is a problem.
For an earlier indication, you can think of the trigger as 3 cases in every 50 cows that calve.
What if you find that you are exceeding that trigger? What should you do?