by Home Farm Equine
•
6 October 2021
As the temperatures begin to rise and the sun starts to shine, regrettably so does the risk presented to the horses caused by Sycamore seedlings and seeds. Eating these can cause Seasonal Pasture Myopathy (previously known as Aytypical Myopathy / Sycamore poisoning). This condition has a very sudden in onset, with clinical signs consisting of: stiffness, reluctance to move, muscle tremors, sweating, weakness, lethargy, difficulty in breathing, reluctance to work, red or brown urine, choke, colic, low head carriage, fast or irregular heartbeat and sudden collapse. The time from the onset of symptoms to collapse can be as short as 24 hours. The helicopter shaped seeds are now springing up as seedlings, which are also poisonous. We would advise pulling up all seedlings before allowing horses to graze any affected pasture. Seeds can travel up to 200metres from the tree, especially in the winds we have been experiencing lately, so please be vigilant. Seedlings, seeds and leaves of Sycamore trees can be tested for the toxin Hypoglycin A, which causes SPM. The Royal Veterinary College, London is carrying out this testing. http://www.rvc.ac.uk/research/laboratories/comparative-neuromuscular-diseases-laboratory/diagnostic-services#panel-n-e-w-atypical-myopathy-testing If your horse shows any of these signs, or you are worried after grazing near sycamore trees, please call us immediately on 0115 9899411 .