Equine atypical myopathy - please read

Bert&Maud

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I have had this message emailed to my this evening from a member of our hunt, via a friend. I forwarded it on to all of my horsey friends. One replied that they had a donkey who died a couple of weeks ago with very similar symptoms. I googled EAM and it sounds like a horrible condition with a high mortality rate so thought I would forward this to HHO in the hope that it might help. The information that I read does not suggest that it is only young horses who are at risk.

"I had a horse die this week of EAM equine atypical Myopathy. I had not even heard of it.
In this mild weather a bacteria has been growing on grass particularly on wet ground and under trees. Mostly young (but not always hence atypical) horses up to 3 can get it that are out on grass 24/7. If you bring them in at night and feed hay, the toxins don't build up and they are safe.
The symptons are a horse ties up at the back end and is usually found on the ground immobile but oddly still wanting to eat. Laboured breathing, sweating and inability to pass urine but when a cathetar is placed it comes out dark muddy blood coloured. There is only a 12% chance of survival and even then muscle damage and liver/kidney . Having been through the whole disaster I would reccommend that a horse found with it is best shot as it really is hopeless. Mine was 18months Irish colt massive lad and strong and healthy and I thought he would make it. He lasted two days on a drip!

I have asked Blackmore vale to put a thing in the paper but it wont make this week. My ground isn't wet, there are a few leaves but not many but Berwick is a damp place. I have to say I am really gutted, as it is so easily prevented, I just didnt know."
 
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Hi received this post today via facebook link from the following vets.
Whatever the cause its still sad.

McGonnell & Gillatt Equine Veterinary Practice
There appear to be some unfounded rumours regarding the recent illness of some horses at Hall Place Equestrian Centre, Tilehurst. With their permission, we would like to release the following information in order to dispel the hysteria: There have been two ponies afflicted with a severe illness which resulted in their rapid death, and one more pony is critically ill in hospital. There are also several others mildly affected by what appears to be the same thing. These ponies are all in the same field, and the blood results indicate that the illness appears to be due to a toxin somehow taken in from the pasture. It is not believed to be infectious or contagious. There are over 30 other horses at Hall Place who are in contact with the affected horses whose blood results and health are completely normal. We are awaiting the results of further tests, and have veterinary experts from across the country involved to try to find the cause of this illness. Although there was initially a question over whether the first death was due to Atypical Myopathy, subsequent information from the blood samples and similarity to the others affected has ruled this out.
 
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