Choke is termed by vets as a minor veterinary emergency, but if your horse has ever had ‘choke’ you might have found it quite an alarming experience. In this article we will look at what choke is, how to prevent this from occurring and what to do if your horse suffers from choke.
Choke is correctly termed ‘oesphagual obstruction’, and most commonly this is caused by dry feed, or a treat such as a carrot, becoming lodged in the oesphagus. Unlike when a human chokes the horse can still breath, as the oesphagus is blocked, not the trachea, so breathing is not restricted.
In an effort to clear the blockage the horse will cough and splutter, and saliva and food materials will pass out of the nostrils. This can be rather distressing for both horse and owner. It is important to keep your horse calm, and try to encourage the horse to lower its head to help clear the blockage. Choke generally resolves quite quickly on its own, but it is advisable to call your vet as some cases may require clearing by a vet.
Choke is generally caused by feed, or treats. Sometimes this is due to a feed, such as sugar beet, not being soaked sufficiently, or a dry chaff not being sufficiently watered down. If sugar beet, or any other feed designed to be soaked, is inadvertantly fed dry this can expand in the oesphagus and cause an impaction. Carrots are also a common culprit in cases of choke, especially if they are not sliced lengthwise. A circular disc of carrot is just the ideal size and shape to block the oesphagus.
Choke can be caused by the horse eating too quickly. Some horses are greedy, and will come into the stable and virtually ‘inhale’ some hay or feed, without chewing this sufficiently, and a case of choke can occur as a result. Other horses might bolt their feed due to competition if they are fed in a group out in a field.
Poor dentition can also contribute towards the occurrence of choke, as feed is not being chewed sufficiently before being swallowed. Inadequate water intake can also lead to choke, and there is a risk of choke occurring after a horse has been sedated if they are allowed access to hay before the sedative has fully worn off.
It is easy to panic when your horse appears distressed with food and saliva pouring out of their nostrils. Don’t forget choke is classed by vets as a minor emergency, and that your horse can still breathe. Do give your vet a call, it might be necessary for your vet to visit in case the choke does not resolve on its own.
It is unlikely that your horse will try and eat but you don’t want to add to the impaction any further.
To help relax horse and owner you can gently walk the horse and encourage their head down which will help clear the blockage.
It might be necessary for your vet to sedate the horse, give a muscle relaxant, and pain killers may also be necessary. In some cases a nasogastric tube may be passed to clear the choke and antibiotics may be given as well. There is a risk of secondary pneumonia occurring after a case of choke, so it is sensible to consult with your vet.
Choke can often be prevented but it is a ‘horsey emergency’ that owners need to be aware of. Calling your vet and remaining calm is important, and of course don’t forget that your horse can still breath. You can learn more about choke and other horsey emergencies such as nosebleeds, colic and cast on our next Live Horse First Aid Course. This is six hours of vet led training, delivered online via Zoom in three sessions. All the details can be found here.