232 First Street
Fort Lupton, CO 80621
Our clinic provides large animal ambulatory service to Fort Lupton, Hudson, Platteville, Brighton, Keenesburg, Dacono, Frederick and Firestone.
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Case of the Month:
In December of 2017 a 22 year old gelding with history of weight loss, topline muscle atrophy and attitude change over previous 3 months was seen. Hair coat appear longer than previous years especially on limbs. What disease could cause these symptoms? What further testing could be done to diagnose this condition?
The horse had blood drawn for TRH test. A blood sample was drawn and 1ml of TRH was administered intravenously. 10 minutes later another blood sample was drawn. The test was submitted to Cornell Veterinary Diagnostic Laboratory. The test results came back as initial ACTH was 5.78 pg/ml normal range is 9-35 pg/ml and 10 minute ACTH was 246pg/ml normal range was 9-110 pg/ml. This would be considered a positive test for pituitary pars intermedia dysfunction or PPID.
After 90 days on medication 1mg pergolide orally once daily a repeat TRH test was performed and the initial ACTH was 5.54pg/ml and 10 minute ACTH was 28.6pg/ml. These means he is receiving a therapeutic dose of Pergolide.
We recommend annual blood testing for ACTH and/or TRH testing for our patients with PPID.
Horses that have been diagnosed with PPID should be fed a low starch diet less than 12%.
We recommend that you have your hay tested and also monitor the starch content in any grain.
If weight gain is needed we recommend a fat supplement in addition to low starch senior pellet.
Also recommend having an annual dental exam as horses with PPID or more prone to dental problems
In addition regular hoof trimming or shoeing is also very important, and should be done every 6 to 8 weeks. This is important because horses with PPID have an increased risk of developing laminitis(founder).