Understanding Fall Laminitis in Horses

Newsdate: Fri 07 October 2016 – 6:20 am
Location: GUELPH, Ontario

In the fall, some horse owners and caretakers are faced with the onset of obvious foot pain in their horses for no apparent reason. What's going on?

Recognizing reasons for fall laminitis in horses

Recognizing reasons for fall laminitis in horses

According to Dr. Eleanor Kellon, the vast majority of laminitis cases have a hormonal/endocrine root with a peak in the spring, related to grazing young high sugar growths of grass and a second peak in the fall, but the cause is more complicated.

Dr. Eleanor Kellon, an established authority in equine Cushings and Insulin Resistance, says the vast majority of laminitis cases have a hormonal/endocrine root. “There is a peak in the spring, related to grazing young high sugar growths of grass. A second peak occurs in the fall, but the cause is more complicated.”

Grass undergoes a period of regrowth in the fall in some areas, but many cases of fall laminitis aren't even on pasture. There is a natural rise in the hormone ACTH from late summer through end November in all horses.  ACTH stimulates release of cortisol. 

In older horses and horses that are early cases of Cushing's Disease this rise can be very exaggerated and can cause or worsen insulin resistance, often pushing the horses into laminitis. Reversing this means attacking on the dietary end and also using medication, pergolide, to control exaggerated ACTH release.

Insulin resistance is managed with the same dietary adjustments no matter how it is caused. This can be adjusted up or down to maintain a lean body weight but do NOT starve the horse.

The horse should be fed primarily grass hay with a combined sugar (ESC) and starch level below 10%.  A good starting point is to feed 2% (20 pounds per 1000 lbs) of ideal body weight or 1.5% of current body weight, whichever is larger.

There are several vitamins and minerals that play key roles in insulin function.  Keep mineral intakes at correct levels and balance them based on the results of hay analysis or regional average analysis figures.  Across the board, these are fundamental adjustments that can be made:

Normal Magnesium status is important to maintaining cellular sensitivity to insulin.

  • Iron has been shown to worsen IR.  Avoid supplements with any added Iron in the ingredients list, including Ferric and Mono and Dicalcium Phosphate, which are heavily contaminated with iron.
  • Hays from many areas are also deficient in Copper and/or Zinc but with adequate to high Manganese.
  • Hooves recovering from laminitis need balanced minerals and adequate protein. Biotin supports hoof growth and Pyridoxine is needed for amino acid/protein metabolism.
  • Jiaogulan provides potent support for nitric oxide production in the vessels by counteracting hoof blood vessel constriction that can occur with IR and Cushing's.
  • Vitamin E is needed because it is always deficient in hay.  Feed 2 IU (international units) per pound of body weight daily.  Vitamin E requires fat for absorption so feed a liquid E in oil or mix a powdered E into oil.

About Uckele Health & Nutrition

Uckele Health & Nutrition, maker of CocoSoya®, is an innovation-driven health company committed to being on the leading edge of nutritional science and technology for over 50 years.  Uckele takes pride in formulating and manufacturing a full spectrum of quality nutritional supplements incorporating the latest nutritional advances for equine athletes and companion animals to help achieve optimal health.  www.uckele.com

Dr. Eleanor Kellon, staff veterinary specialist for Uckele Health & Nutrition, is an established authority in the field of equine nutrition for over 30 years, and a founding member and leader of the Equine Cushings and Insulin Resistance (ECIR) group, whose mission is to improve the welfare of horses with metabolic disorders via integration of research and real-life clinical experience.  Prevention of laminitis is the ultimate goal.

Article provided by: Uckele Health & Nutrition

About the Author

Flossie Sellers

Author picture

As an animal lover since childhood, Flossie was delighted when Mark, the CEO and developer of EquiMed asked her to join his team of contributors.

She enrolled in My Horse University at Michigan State and completed a number of courses in everything related to horse health, nutrition, diseases and conditions, medications, hoof and dental care, barn safety, and first aid.

Staying up-to-date on the latest developments in horse care and equine health is now a habit, and she enjoys sharing a wealth of information with horse owners everywhere.

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