05/09/2026
Lambs can look perfectly healthy while worm burdens are already beginning to affect growth.
That’s why FEC results, liveweight gain, grazing history, and what you’re seeing on farm can all help build a clearer picture of your flock’s worm challenge.
If monitoring shows treatment is needed in the last third of the grazing season, this could be a useful point to consider giving a break dose with a newer wormer active.
A strategic dose at this time of year can help remove worms, including any worms resistant to previous treatments, helping lamb performance.
Speak to your Wynnstay animal health adviser for more information.