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Spring Worming Guide

Updated: Oct 17, 2018

EFEC Guide to Spring Worming

Parasitic risk in early spring can result in health issues arising such as spring time diarrhoea or colic. These can be a direct result from the mass emerge of encysted cyathasomines (small redworm). Early spring worm egg counts (WEC) and Equisal tests are recommended, with correct treatment given if needed.




Maintaining a good pasture management is a vital part of a strategic worming programme. As we begin to understand the life cycle of these parasites in more detail, we are able to adapt our practices more efficiently.

Poo Picking is a chore that the majority of horse owners try to avoid at all costs, however it is still an effective practise. By removing the manure from the pasture, the larvae are unable to develop and re-infestation levels are decreased.

During the quarantine period of new horses, it is an ideal time to perform WEC and Equisal tests.

If treatment is required worming should be carried out according to the correct dosage rate for the weight of the horse. Under- dosing has been shown to be a high contributing factor to resistance development.

Avoid over stock and over grazing, co grazing with sheep an cattle is an effective parasitic management practise, however ensure they have been appropriately dosed for fluke.