"Hi, I'm Hannah the E-SQP at Supplement Solutions. This means I am qualified to prescribe and supply equine wormers as well as offering advice and worming programmes. Here's some information about Encysted Small Redworm, brought to you in conjunction with Zoetis (makers of Equest and Equest Pramox)." Hannah Wild, 3D Worming E-SQP of the Year.

What is Encysted Small Redworm?  Encysted Small Redworms (ESRW) are the most common and harmful worms found in horses with the larval stages of this parasite giving the greatest cause for concern. Small redworm larvae can encyst within the gut wall throughout the year - especially in Autumn and Winter. Without treatment, sudden mass emergence will occur in Spring and can cause diarrhoea and colic (with a 50% mortality rate).

Test Worm count tests are excellent tools to monitor roundworm and tapeworm burdens, however, ESRW's cannot be detected through a worm count kit as they are encysted in the gut wall. Hannah's tip:  "You can never be sure of a new horse's worm burden. If their history is unknown horse's should be treated for ESRW. They should be stabled for at least 48 hours to avoid bringing resistant worms onto your premises."

Plan It is important that you consider the seasonal worming threats when formulating your worm control plan. Every horse at risk should be treated for ESRW in late Autumn or Winter to prevent small redworm larvae from encysting.

Dose Horses should be dosed accurately, according to their weight. This is important because under-dosing can increase the risk of resistance. Hannah's tip: "A weigh bridge is more accurate but not necessarily accessible, so a weigh tape will do! Don't guess your horse's weight. Select the most appropriate wormer for the parasites you are targeting. Ask me for help!"

How should I treat for Encysted Small Redworm? Once a year in late Autumn or Winter using a single dose of Moxidectin (Equest or Equest Pramox) or a 5 day course of Fenbendazole (Panacur 5 Day Guard).