Research evaluating risk factors for the development of pasture associated laminitis.

We all know ponies that are “prone” to laminitis and others, which despite being overweight and stuffed full of grass, never get laminitis. A study into the reasons behind this may hold some answers.

A study was carried to look at any factors that may affect the pre-disposition of a horse or pony getting laminitis. The study looked at 446 equines, mainly Welsh, Shetlands and Cobs, who had never previously had laminitis. Of these 72% were overweight.

They were tested using the dexamethasone suppression test (DST) which illustrates the behaviour of insulin dysregulation, without testing for it intravenously. The results for serum adiponectin and insulin post-dexamethasone, amongst others, were recorded. Results were recorded from the owners over the next three years.

After 1 year, 18 cases of laminitis were reported. After 2 years, 30 cases and after 3 years, 44. The study concluded that low levels of plasma adiponectin, and high levels of serum basal and insulin post-dexamethasone were significantly associated with the development of laminitis.

Obviously how we care for our horses and ponies that are likely to be prone to laminitis is very important. Speak to your vet if you have any concerns or would like more help managing your horse or pony’s health. But it is worth bearing in mind that some horses and ponies are simply pre-disposed to laminitis and it is not always a reflection of the level of care.

Menzies-Gow, N., Harris, P. and Elliott, J. (2016). Prospective cohort study evaluating risk factors for the development of pasture-associated laminitis in the United Kingdom. Equine Vet J.