Two Horses Eating

Limiting pasture intake is recommended for obese horses and ponies and those at risk for laminitis.  This can be difficult to do if horses have access to pasture full-time or when, for example, stabling is not an option.  Grazing muzzles are a valuable tool to limit pasture intake in horses and ponies and, when properly used, can help to limit pasture intake in those that are obese or prone to obesity with access to pasture.
 

Here are some recommendations for proper fitting and use of grazing muzzles.
 

Grazing muzzles are a valuable tool to help limit pasture intake in animals that are obese or prone to obesity with access to pasture. Here are some recommendations for proper fitting and use of grazing muzzles. 
 

  • Select the most appropriate size for the horse or pony
  • The muzzle should fit comfortably around the muzzle leaving around 1/2-1 inch around the edge
  • Straps should be adjusted so that there is about a 1-inch space between the end of the horse's nose and the muzzle
  • Muzzles should not hang too loose or be positioned too tight, leaving little room for movement
  • It will help to watch the horse grazing while wearing a muzzle and adjust as needed
  • Try poking grass or treats through the hole in the bottom to help encourage eating with the muzzle


Grazing Muzzle do's and dont's for Horses and Ponies
 

  • DO adapt horses and ponies gradually to wearing a muzzle
  • DO initially supervise turnout with the muzzle to ensure proper eating and drinking
  • DO check the pasture and water source for anything that may get caught on the muzzle. Ensure use of a quick release muzzle for safety.
  • DO always follow specific instructions for use and check muzzle regularly for changes in size/shape of aperture
  • DO monitor group behavior to observe any effects on herd dynamics, like bullying, since they may not be able to use facial expressions to maintain their place 
  • DO consider using a muzzle during the day and leaving it off at night for non-obese horses and ponies prone to weight gain with unlimited pasture
  • DO consider daily muzzle use for 3-8 hours to allow for free exercise while limiting intake for obese horses and ponies requiring weight loss
  • DO have a dental exam performed regularly, about every 6 months
  • DONT use muzzles for 24-hour turnout. Horses and ponies require time of self-grooming, etc. We recommend a maximum use of 12 hours per day.
  • DONT use muzzles during times of little or no grass or when the grass is long. If necessary, monitor short-term turnout for exercise only
  • DONT use muzzles, especially for prolonged periods of time, if horses and ponies are not able to drink while wearing it


References:
 

Longland, Annette & Barfoot, Clare & Harris, Patricia. (2015). Effects of Grazing Muzzles on Intakes of Dry Matter and Water-Soluble Carbohydrates by Ponies Grazing Spring, Summer, and Autumn Swards, as well as Autumn Swards of Different Heights (opens in new window) . Journal of Equine Veterinary Science. 40. 10.1016/j.jevs.2015.09.009.
 

Longland, Annette & Barfoot, Clare & Harris, Patricia. (2016). Efficacy of Wearing Grazing Muzzles for 10 Hours per Day on Controlling Bodyweight in Pastured Ponies (opens in new window) . Journal of Equine Veterinary Science. 45. 10.1016/j.jevs.2016.04.015.
 

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