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Veterinary A-Z each issue we will be covering different aspects of equine ailments to build a comprehensive manual. Covering issues like when to call the vet, how to treat minor wounds, and what to do when it all goes wrong.
This issue we cover Azoturia.
Azoturia - Is a disease that has plagued horse owners for many years, also known as setfast or Monday morning sickness, Paralytic myoglobinuria, tying up.
A very painful condition which has symptoms of sweating, becoming stiff, unwilling to move, muscles showing spasm and the classic red coloured urine.
The fact is that Azoturia is not really a disease but the symptoms are all indications of damage to the muscles in the hind limbs and the name is given describe the syndrome of a horse with muscle damage.
Azoturia can occur when a horse is asked to do more than he has been prepared for IE. in spring after the horse has not worked much or been rested during the winter to take him out and exercise him strenuously. It can also commonly seen in horses that have had their training accelerated too quickly.
Causes can also come from respiratory diseases, trauma (such as a horse getting stuck in something and having to pull himself free.) toxic plants e.g. some types of evergreen shrubs, and occasionally reactions to certain drugs.
In most cases a period of rest will allow the muscles to heal and once recuperated the horse will be ready to return to normal activities.
In horses where tying up regularly reoccurs even light work can bring on attacks and diet can also be a factor. Sometimes there are not enough electrolytes and minerals in the diet, particularly if you have a performance horse, then a diet of hay and low energy feed is not enough. So adding salt and minerals to the horses daily diet will help.
Horses that get reoccurring Azoturia have been found to have high levels of glycogen in their muscles and therefore should be kept on a low grain diet with plenty of exercise.
What to do if your horse ties up:
Stop exercise immediately - walk the horse back to the stable if possible - DO NOT force the horse to move.
Call the vet!
Cover the horse with a rug or blanket especially if the weather is cold.
See if the horse is dehydrated (pinch test or saliva - wet not sticky)
Give the horse fluids electrolytes may be added to the water but have a normal supply available also. If the horse is dehydrated the vet may want to give the horse fluids intravenously.
Keep the horse calm. Drugs may be given by the vet to help.
Remove feeds and only give the horse hay until the symptoms subside
Walking the horse in hand or small paddock turnout is good once the horse has recovered from the initial attack (as soon as the horse can walk freely)
If the problem reoccurs have the horse tested for causes.
Consider changing the horses diet, making sure the mineral level is sufficient.
If in doubt consult your veterinary surgeon.
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