Here you will find all things worming.


Cyathostomin Poster

This is a project I had to do for part of my Master’s course.  It is a very detailed Cyathostomin (small strongyle) lifecycle all based around an image of my very woolly horse, Sunny.  It contains a lot of science-speak, but if you are curious to look at the lifecycle of this worm and its implications at a deeper level, then this is the poster for you.


NSW DPI Guide to Horse Wormers

The NSW Department of Primary Industries is happy for their resources to be made available free of charge as long as they are acknowledged for it.  I love their poster and I refer to it ALL the time as it is impossible to remember all the different brand names, active ingredients, what product is good for what horse parasite, etc.  Print it out as an A3 poster, laminate it and stick it on the wall of your tack room so you can easily refer to it and leave out all the guess work.



Information Sheets

Nematodes Affecting Horses – Cyathostomins

Best Practice in Horse Worm Management

This booklet reveals the future of parasitic worm management in our horses until a bettert strategy comes along in the future.  It discusses the hows and whys of moving from routine deworming every 6 or 12 weeks, to deworming based on the evidence of faecal egg counts.  Clicking the above link with take you out of this website and onto the booklet’s secure host website.  We hope you will share the booklet amongst your horse-owning friends and feel free to download a PDF version to read when you have time.  We hope you like it!

BioWorma – is this really the future of parasite control in horses?

BioWorma is a new biological control for parasitic nematodes of horses and livestock that relies upon a fungus that naturally occurs in the faeces of herbivores.  It has been under development for almost 20 years and is ready for commercial release by International Animal Health Products.  Evidence Based Worming has looked at the science behind the fungus, Duddingtonia flagrans, and evaluates its potential efficacy against the currently recommended practice of selective therapy, or evidence-based worming.  Hopefully, the information will help you be well informed before you decide to go down the line of biological control.  Read the full article.

Dead worms after treating despite No/Low FEC test results.  What’s going on?

Yes, it does seem odd – or does it?  This Info-sheet explains why worms can ‘hide’ inside our horses at certain times.  Read the full article.

Agistors’ Guide to Transitioning to Evidence-based Worming

Momentum towards evidence-based worming is gathering speed, if our increasing contact with horse agistors is any guide.  So we have put together a two page Infosheet which we hope will provide an easy-to-understand (and execute) strategy for undertaking the first faecal egg count (FEC) benchmark exercise for the property.  We also include a paragraph on current best practice for introducing new horses to agistment properties as a way of preventing  accidental introduction of resistant strongyles to the property.  Read more..

Do’s and Dont’s for Agistors and Managers of Small and Large Horse Herds

In this Infosheet we have put together a few dot-points in managing horse herds in a way that can not only prevent the accidental introduction of resistant parasitic strongyle worms, but how to keep worm resistance to anthelmintics at bay.  We hope that readers will find this to be a useful tool to add to their current integrated pasture management regime on their properties.  Read more…


Tools & Forms

Microscope Essentials for FEC-sters

It’s easy to be tempted to purchase a cheap microscope, but when it arrives you might find you can’t move the slide around the stage to count the eggs!  This one-pager will help you choose the right microscope from the beginning.

Faecal Flotation Solutions – make your own!

A tried and true ‘recipe’ that we use here at Evidence Based Worming.

FECs:  4 easy steps for posting your horse’s poo to EBW

Avoid an unnecessary incident at Australia Post.  Packing the sample correctly to send away for FEC testing will ensure that your horse poo sample will not escape and end up on Australia Post’s sorting tables with the staff heading for the hills!  This tool shows how to do it in just 4 simple steps.

FECs:  Horse Data Sheet

Please complete one of these for each horse for which you are sending a sample.  It helps us to look out for specific egg types (eg, if the horse is a youngster we will be on the hunt for roundworm eggs).  We also use the sheets as a confidential record so, if you lose your records we are here to back you up.

FEC or Deworm?  A seasonal guide for horse managers

Moving away from routine deworming towards deworming based on evidence can result in total confusion.  We recognise this and have prepared a one page poster that hopefully clarifies what to do and when on a season by season basis, and when out-of-season warm, wet conditions help the grass to grow.  Worms can’t get around very easily unless the conditions are right!.  You might want to print it as an A3 poster, laminate it and stick it on your tack room wall for easy reference.



Other Resources

Do I Call the Vet?

Do I Call the Vet?

Dr Richard H. Chapman, BVSc, has published his long-awaited book – Do I Call the Vet? and what to do in the meantime.  In his book Dr Chapman provides a treasury of information, tips, first aid techniques and – perhaps most importantly – reassurance.  Dr Chapman can himself perhaps be reassured his many valued clients will now be able to stop reminding him about it!  Click here to go to Dr Chapman’s website where you can purchase your very own copy.