Your data on MRCVSonline
The nature of the services provided by Vision Media means that we might obtain certain information about you.
Please read our Data Protection and Privacy Policy for details.

In addition, (with your consent) some parts of our website may store a 'cookie' in your browser for the purposes of
functionality or performance monitoring.
Click here to manage your settings.
If you would like to forward this story on to a friend, simply fill in the form below and click send.

Your friend's email:
Your email:
Your name:
 
 
Send Cancel

Sycamore warning after pony death
horse
Atypical myopathy has been linked to toxins found in sycamore tree seeds.
Rehomed Blue Cross pony dies from atypical myopathy

A warning has been issued of the dangers of sycamore following the death of a pony rehomed by the Blue Cross.

According to the charity, the pony tragically died from atypical myopathy (AM), which is thought to be caused by toxins from the seeds of sycamore trees.

There were no sycamore trees in or nearby the pony's field. It is thought the seeds ingested were brought in by floodwater.

Gemma Taylor, education officer at Blue Cross, said: "One of our horses in an experienced loan home unfortunately lost his battle with this fatal disease last week…

"This tragic incident has brought home how horrific this disease can be and how all horse owners have to stay alert to the dangers to try to minimise this dreadful disease."

AM is a fatal muscle disease seen in the UK and Northern Europe. Research indicates it is caused by the ingestion of hypoglycin A - a toxin contained in sycamore tree seeds.

An equivalent disease in the USA, known as seasonal pasture myopathy, has also been linked to hypoglycin A toxins from box elder trees.

According to Blue Cross, there has been an "alarming rise" in the number of new AM cases this spring. Young horses and those being grazed on parched land appear to be more vulnerable.

Symptoms include muscle weakness, depression, recumbency, dark red urine, choke or colic-type symptoms.

Blue Cross has joined forces with vets at Bourton Vale Equine Clinic to put together some top tips for owners:
  • Feed forage such as hay in parched fields - off the floor in hay-nets or feed racks
  • Do not over stock
  • Limit turnout.  Ideally stable horses over night
  • Section off areas around poisonous trees and collect and dispose of leaves safely away from horses
  • Remove young sapling plants
  • Be careful of streams running through paddocks as this is thought to be more prevalent in moist places
  • Be vigilant of the potential signs of this disease and act quickly if your horse becomes poorly
  • Ensure you check your horse regularly at least twice daily
  • Check your vet insurance is up to date

Image courtesy of Blue Cross

 

Become a member or log in to add this story to your CPD history

FIVP launches CMA remedies survey

News Story 1
 FIVP has shared a survey, inviting those working in independent practice to share their views on the CMA's proposed remedies.

The Impact Assessment will help inform the group's response to the CMA, as it prepares to submit further evidence to the Inquiry Group. FIVP will also be attending a hearing in November.

Data will be anonymised and used solely for FIVP's response to the CMA. The survey will close on Friday, 31 October 2025. 

Click here for more...
News Shorts
CMA to host webinar exploring provisional decisions

The Competition and Markets Authority (CMA) is to host a webinar for veterinary professionals to explain the details of its provisional decisions, released on 15 October 2025.

The webinar will take place on Wednesday, 29 October 2025 from 1.00pm to 2.00pm.

Officials will discuss the changes which those in practice may need to make if the provisional remedies go ahead. They will also share what happens next with the investigation.

The CMA will be answering questions from the main parties of the investigation, as well as other questions submitted ahead of the webinar.

Attendees can register here before Wednesday, 29 October at 11am. Questions must be submitted before 10am on 27 October.

A recording of the webinar will be accessible after the event.