Worming Mares

Suitability of the worming brands with regard to Foals, Pregnant and Lactating Mares

A quick guide to ease your worries when worming your Foals, Pregnant and Lactating Mares.
More info on worming foals here

  Equest Pramox Equest Eraquell Paste, Eqvalan, Noromectin, Bimectin Pyratape P, Strongid P, Embotape
Suitable for Pregnant Mares Yes Yes  Yes Yes
Suitable for  Lactating Mares  Yes Yes  Yes Yes
Suitable for Foals From Six & Half Months of age From Four Months of age Yes From Four Weeks of age
  Panacur Paste Panacur Granules Eqvalan Duo Equitape
Suitable for Pregnant Mares Yes  Yes Yes (SUBJECT TO ASKING FOR ADVICE FROM YOUR SQP OR VET)
Suitable for  Lactating Mares (It is recommended that mares are not wormed until 2 weeks after giving birth) Yes Yes Yes (SUBJECT TO ASKING ADVICE FROM YOUR SQP OR VET)
Suitable for Foals Foals weighing more than 101kg (SUBJECT TO ASKING FOR ADVICE FROM YOUR SQP OR VET) From Two Months of age (SUBJECT TO ASKING ADVICE FROM YOUR SQP OR VET)
From 2 weeks of age From 2 weeks of age
  Panacur Equine  Guard Vectin Paste Equimax, Noropraz, Eraquell and Equimax Tablets
Suitable for  Lactating Mares  Yes (SUBJECT TO ASKING FOR ADVICE FROM YOUR SQP OR VET) Yes
Suitable for Foals From two weeks of age From eight weeks of age  From two weeks of age 

As a general recommendation mares should be wormed thought out the gestation period with a final treatment being given 2-4weeks prior to foaling.Take extra caution particularly with dosages when worming young stock for the first time if you are not certain about any previous treatments given or if the treatment you are considering is the first one administered to the horse. As a general guide foals should be wormed as soon as they start to graze pastures or pick at the mares droppings with reference being made to the suitability for foals with regard to each product used. Again the worming intervals for foal worming depend on which product is selected but with foals the manufacture recommended interval will act as good guide.As a guide to dosages a 4 month old thoroughbred will weigh about 180kg whereas a new born will be about 50kg. At 6 months the weight will be between 200 and 230kg. Tapeworm infestation is unlikely in foals under two months of age.

Youngsters and foals are prone to Ascarids (Large Redworm) for the early part of their life usually developing an immunity at 18 months but recently this Large Redworm burden has been seen in horses over 5 years old. This is a very dangerous parasite in youngsters with adult worms being up to 40cm long.
One of the roundworms that can affect foals from an earlier age are Intestinal Threadworms (Strongyloides westeri)  In foals this can cause diarrhoea, weakness, weight loss and poor growth. Infected mares pass the worm in their milk onto their young foals. If this infection is suspected there are wormers that can be used from 2 weeks of age. 

If possible try to graze young horses separately from older horses as the young horses are likely to have the highest worm burden and therefore will cause the majority of pasture contamination. Younger horses need to be wormed more regularly than their older stable mates. Tapeworm burden generally is worse in young horses between the ages of 6 months to 2 years with the years of 3 to 15 having much lower infestations and levels rising again in veteran horses. This situation is very much the same with regard to roundworms and recent studies have shown that where there is a roundworm infestation then there is a strong likely hood of a a tapeworm infestation too. If possible it is a good idea to avoid putting youngstock on the pastures that have been grazed by last years foals.

More info on worming foals here