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ResourcesUpdated 21 days ago

Links to relevant research papers and articles can be found in many of our Help Center articles. Prefer to browse on your own? We've also listed them here with a brief overview for your convenience.


Interaction of Grazing Muzzle Use and Grass Species on Forage Intake of Horses

The use of a grazing muzzle reduced adult horse's pasture intake by approximately 30%, regardless of cool-season grass species grazed. 

Glunk EC , Sheaffer CC , Hathaway MR , Martinson KL . Interaction of grazing muzzle use and grass species on forage intake of horses. J Equine Vet Sci 2014;34:930–3


The effect of wearing a grazing muzzle vs not wearing a grazing muzzle on pasture dry matter intake by ponies

Pasture intakes were significantly reduced when ponies were fitted with a muzzle such that pasture dry matter intake was reduced by an average of 83% (range 75-88 percent) compared to when the ponies were grazing without their muzzles.

A.C. Longland et al. The effect of wearing a grazing muzzle vs not wearing a grazing muzzle on pasture dry matter intake in ponies. J Equine Vet Sci (2011).


Grass length can affect muzzled grazing behaviour in ponies  

Grazing muzzles can be an effective tool to help with equine weight management, according to new research, but longer grass can be more difficult for muzzled ponies to graze. This can cause frustration-related behaviour in some individuals. 


Obesity and Weight Management

Monitoring and managing your horse’s weight is an important part of horse ownership, particularly if you own a “good doer”. Ensuring that your horse does not become overweight means that your horse is at less risk of developing Equine Metabolic Syndrome (EMS), laminitis, arthritis, and other chronic health conditions. 

National Equine Welfare Council. Obesity and Weight Management. newc.co.uk,


NEWC Grazing Muzzle Guidance

Grazing muzzles are used to restrict grass intake, not to prevent a horse from eating. Restricting grass intake is important for horses with a tendency to gain weight or that are susceptible to laminitis.

National Equine Welfare Council. Grazing Muzzle Guidance. thelaminitissite.org,


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