Colic is, unfortunately, an increasingly common issue as the colder weather sets in, resulting in abdominal pain for the horse. There are many different causes and types, but each is as important to avoid as the other.
Colic is actually the leading cause of death in horses so as horse owners, is it not our prerogative to do all we can to prevent this horrible issue affecting our horses? While not all colic episodes can be prevented, avoiding situations which predispose the horse to colic will undoubtedly reduce the incidence so let’s look at how we can help protect our horses from colic this winter.
Most commonly related to the cold weather months are impaction-colics. An impaction is a blockage of the intestine with feed stuff. Although impactions can occur anywhere throughout the intestine, some sites are more common. The pelvic flexure portion of the large intestine is a common site of impaction due to the decreasing diameter at this point.
There are a number of reasons a horse may get impaction colic. They tend to drink a lot less in the winter months than they would in the Summer. This is worsened when colder weather means horses are stabled more giving them less access to fresh forage (grass) containing higher moisture levels than conserved forage (hay/haylage). In addition, freezing temperatures may hinder physical access to water for part of the day.
Dehydration impedes gut movement and when ingested feed stops moving through the horse’s gut efficiently, the material can accumulate and form a blockage. Feed and gas then back up behind the blockage, causing distention of the intestine and associated pain.
To avoid dehydration, you can add water to their bucket feed and steam the hay prior to feeding to help bring more water into the gut. There is an increase of almost 3 x the moisture content when hay has been steamed.
If water buckets/troughs ice over ensure the ice layer is broken regularly to ensure constant access to water. Research at the University of Pennsylvania reported horses would drink 40% more water when the water was heated when it was their only source of water so warming the water your horse has access to will encourage your horse to drink more.
Changes to feeding frequency, type, quantity or quality of feed can cause colic due to improper fermentation in the gut or an obstruction. Any changes in the type or quantity of feed (concentrate and forage) should be done gradually without sudden changes to the diet. The horse’s digestive system ideally needs about 10-14 days to adapt to different forages and feed types to reduce the risk of colic.
Feeding a predominantly forage based diet will help on many levels as forage will hold water in the hind gut and in comparison to concentrate feed, horses chew long stemmed forage more which in turn produces more saliva assisting the transit of the food through the digestive tract.
Poor forage hygiene caused by bacteria and mould has also been identified as a risk factor for colic (Kaya et al 2009). Forage hygiene quality can be improved using a Haygain steamer which steams at a high enough temperature to kill bacteria and mould thereby improving the hygiene quality of the forage.
The following stable management practices can help to minimise the risk of winter colic:
◦ Provide clean, fresh water at all times
◦ Have a daily feeding regime with a regular schedule – be extra vigilant for signs of colic if weather conditions force a change in the management and feeding regime.
◦ Turn out as much as possible
◦ Feed plenty of clean, long-stemmed forage – the use of a Haygain hay steamer and slow feeding system will assist with providing near-continuous access to clean forage
◦ Regularly check stables and field for foreign objects the horse could ingest.
For more information please visit https://haygain.co.uk.
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