Worming

Chapelfield

Veterinary Partnership

Types of wormers available

Several types of wormers are available to horse owners. The drugs used in proprietary wormers can be divided into the following groups:

Benzimidazoles

• Fenbendazole - e.g. Panacur paste, Panacur Equine Guard.
• Mebendazole - e.g. Telmin paste.
• Oxibendazole - e.g. Equitac paste.

Tetrahydropyramidines

• Pyrantel - e.g. Strongid-P paste, Pyratape P Paste.

Avermectins and Milbemycins

• Ivermectin - e.g. Eqvalan paste, Furexel paste.
• Moxidectin - e.g. Equest paste.

When should we use wormers?

Everyone's situation and circumstances will vary. It is best to seek the advice of your veterinary surgeon for a worming regime which suits your requirements. A general regime which we commonly use when advising our clients is shown below:

Worming Key

Indicates the best time to double dose with either Pyratape P or Strongid-P for tapeworms.

Indicates the best time to worm for bots. Use either Eqvalan, Furexel or Equest.

This symbol indicates the main risk periods for cyathostomes (the encysted larvae of the small red worms). Worm in these periods with either Panacur Equine Guard or Equest.

Grazing

During the grazing season we advocate routine worming every 4-12 weeks, depending on the product used. We advise that you change the type of wormer (between the different drug groups) each time you worm in the grazing season.

There is a school of thought that the type of wormer (drug group) need only be changed from year to year.

Whichever advice is followed, it is very important that this rotation is carried out, to avoid resistance from developing!

Worm related topics

Pasture management

Faecal worm egg counts - WEC

Useful Books

The Complete Equine Veterinary Manual
Hardcover, by Tony Pavord, Marcy Pavord
Serving as a quick reference for veterinary surgeons and students, this work is also intended as an addition to the bookshelves of horse owners, both amateur and professional.
Click on the title if you are interested in purchasing the book.

Veterinary Notes for Horse Owners
M. Horace Hayes FRCVS, Peter D. Rossdale MA PhD FACVSc DESM FRCVS (Editor), Fiona Silver (Illustrator)
Paperback - 740 pages
Click on the title if you are interested in purchasing the book. A comprehensive manual of horse medicine and surgery, this book explains the symptoms and treatment of every disease or injury that the horse owner is likely to encounter. Written in a straightforward manner that will appeal to both novices and experts, the book contains detailed sections on the organ systems, the musculoskeletal system, the reproductive system, infectious diseases, medical and surgical advances, management and husbandry, exercise physiology, the purchase of horses, legal and medical certification, and on the veterinary service itself. There are sections, too, on nutrition, determination of age, proprietary medicines, prohibited substances and notifiable diseases, and this latest revised edition has entirely new illustrations and photographs.

Threshold Picture Guide

First Aid

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