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Feeding Forage and Avoiding Colic
By Kim Miller | Equestrian Writer
Make No Sudden Changes
Most risk factors for colic are centred around management and feeding practices. Dietary change tends to be the most commonly reported risk factor which would include changes in batch or type of forage (or concentrate) and management changes, such as time spent stabled vs in the field.
It’s important to note the risk of colic is significantly higher two weeks after a change in forage (or concentrate feed), with multiple changes throughout the year, increasing the risk further.
This emphasizes the need to make any dietary changes slowly to allow the hind gut microflora to adapt. Introduce changes over at least 14 days and think of feeding the bugs of the digestive tract rather than the horse!!
Feed Plenty of Fibre
Horses evolved as trickle feeders so their digestive tract relies on a steady flow of fibre. Along with fresh, clean water, fibre is a fundamental part of every horse’s diet. Grass and conserved forages such as hay and haylage contribute the largest proportion of fibre to the daily diet and is required at a minimum of 1.5 % live weight to keep the horse physically and mentally healthy and the digestive system working properly. Fibre helps maintain a healthy microbial population and pushes out any excess gas which sits in the gut helping prevent tympanitic colic. Fibre also retains water which will reduce incidence of dehydration, a risk factor of impaction colic.
Feed Good Quality, Clean Forage
Consistently feeding plenty of clean, palatable forage can play a pivotal role in helping to prevent colic. Poor quality hay tends to be less digestible which can predispose to impaction colic. The hygienic quality is also important. While it is recognised poor hygienic quality forage adversely affects the health of the respiratory tract in horses, research by Kaya et al showed horses fed poor hygienic quality hay are significantly more susceptible to colic than those fed clean hay. Results from Hudson et al suggest that feeding hay from round bales increase the risk of colic in horses which may be because round bale hay is generally of poorer quality.
Steaming Hay will Improve the Hygienic Quality
Kaya G, Sommerfeld-Stur I, Iben C. Risk factors of colic in horses in Austria. J Anim Physiol Anim Nutr (Berl). 2009 Jun;93(3):339-49.
Jason M. Hudson, Noah D. Cohen, Pete G. Gibbs, and James A.Thompson, Feeding practices associated with colic in horses Journal of the American Veterinary Medical Association 2001 219:10, 1419-1425
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