The equine ergot
by Sarah Das Gupta
is mysterious and odd
someone blundered
Having had many horses in a long life, I can’t see the importance of the ‘ergot’ in 2023. For those unaware, the ergot is a small callosity on the underside of the fetlock of a horse. In horses, ergots can range from pea-sized to 3.8 cm in diameter and can be found on all four legs or absent on some or all of them.
The ergot has long been felt to be a vestige of the multi-toed foot of ancestral horses, and some horse owners trim them down to near skin level. However, the ergot’s redundancy may only be skin deep, as recent research suggests that the internal structure of the ergot beneath the visible external callus continues to have a function in modern horses.
Lusi and Davies (2017) studied the subcutaneous ergot tissue and found that “its overall connectivity, and the presence of nerve fibers and Ruffini endings strongly suggest that the ergot and its derived ligaments contribute to joint support, movement, and tension distribution in the distal limb.”
Further reading:
‘The Observer’s Book of Horses and Ponies’, R S Summerhays, Frederick Warne & Co. Ltd.
‘The Connectivity and Histological Structure of the Equine Ergot—A Preliminary Study’, Carla M. Lusi and Helen M.S. Davies, 2017, https://doi.org/10.1016/j.jevs.2017.01.003
Author bio:
Sarah Das Gupta is a young 81 year old. Loves writing haiku and most forms of poetry. Is learning to walk after an accident. Main outside interests include equine sports. Lives near Cambridge, UK. Read other sciku by Sarah here.