Multiple animal intoxications associated with Carolina jessamine (Gelsemium sempervirens) ingestions

Neurological signs characterized by marked progressive weakness and convulsions culminating in death were observed in 3 goats over a 24-h period. Affected animals were in a group of 5 goats confined toa fenced paddock: a domestic goose within the paddock was also found dead. Present in the same paddock, but unaffected, were 2 other goats and an adult cow. Five days prior to the animals' deaths, the owner had trimmed the surrounding brush and had thrown the cuttings into the enclosure. Post mortem examination of 2 of the dead goats and the goose revealed reduced muscle mass and fat stores, serous atrophy of adipose tissue, and reduced gastrointestinal contents, which included numerous leaves identified as Carolina jessamine (Gelsemium sempervirens). Histologic lesions included mild diffuse neuronal degeneration and cerebellar Purkinje cell loss in all animals with mild multifocal vacuolation of brainstem and cerebral white matter in 1 goat, and myofiber atrophy with perimyseal fibrosis in the goose. Preexisting malnutrition and lack of adequate alternative forages likely resulted in ingestion of Carolina jessamine and subsequent toxicosis. To our knowledge, this is the first reported case of Carolina jessamine toxicosis in goats and geese.