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Using pH To Diagnose Hindgut Ulcers

You can perform a quick manure pH test at home to identify signs of hindgut acidosis. 

  • Purchase a pH strip pack (you can get these on eBay for less than $10)
  • When your horse passes manure collect 3-4 ‘balls’ and place them in a ziplock bag. This is to get a ‘cross-section’ of the manure.
  • Knead the ziplock bag to combine the manure.
  • Open the bag and gently place the strip on the mixed manure. Allow enough time for the strip to soak up moisture and for the colour to develop. 
  • Compare this colour to the pH chart on your kit. 
  • The normal pH for horse manure is 6.8. Anything lower than 6.5 indicates an acidic digestive tract and likely points to hindgut acidosis.


The content of this article should not be considered, or used as a substitute for, veterinary medical advice, diagnosis or treatment.

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