Get to grips with some of the common terms used to explain worms and worm control with our HorseDialog jargon buster
25 September 2020Read More
Responsible and sustainable worm control is crucial to help keep your horse healthy and performing at his best. While faecal worm egg counts (FWECs) can help you keep control of worms during the grazing season some pesky parasites need special attention during the autumn and winter, particularly encysted small redworm.
During the autumn, the larval stages of the small redworm can stop developing inside the horse’s gut and enter a type of hibernating state known as encysted small redworm (ESRW). Large numbers of encysted small redworm larvae can be present and because larval stages do not produce eggs they cannot be tested for using faecal worm egg counts. 1
Large burdens of encysted small redworm can cause a condition known as larval cyathostominosis when they emerge from their hibernating state. The resulting diarrhoea, colic, and severe weight loss can be fatal, especially in young horses.
All horses of more than six months of age should be tested or dosed with a wormer that will treat for encysted small redworm in autumn/winter time regardless of their FWEC. 1,2
Always talk to your vet or RAMA
Make sure you choose the right worming methods and products for your horse’s circumstances by discussing your worming programme with your prescriber.