Foal with Overo lethal white syndrome born to a registered quarter horse mare.
A 16-hour-old white foal, born to a registered quarter horse mare, was examined for signs of colic. The foal had Overo lethal white syndrome, which causes ileocolonic agangliosis. This was confirmed by DNA testing. Since there is no treatment for Overo lethal white syndrome, the foal was euthanized.
Lightbody
Tamara
T
Ontario Veterinary College, University of Guelph, Guelph, Ontario N1G 2W1.
D000818:Animals; D000831:Animals, Newborn / Q000002:abnormalities*; D003106:Colon / Q000002:abnormalities; D017809:Fatal Outcome; D005260:Female; D005804:Genes, Lethal; D006200:Hair Color; D006627:Hirschsprung Disease / Q000235:genetics / Q000662:veterinary*; D006734:Horse Diseases / Q000235:genetics*; D006736:Horses / Q000002:abnormalities*; D007082:Ileum / Q000002:abnormalities; D013577:Syndrome