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A presumed inherited spongiform leucoencephalomyelopathy of Romney lambs in New Zealand.

This paper records a unique ovine encephalomyelopathy seen on several farms in the Otago Region of New Zealand. It occurred in 2-3 month-old Romney lambs as a rapidly progressive posterior paresis leading to flaccid paralysis. Pathologically, it was characterised by severe spongy vacuolation of white matter in both brain and spinal cord. It is suspected that the condition is inherited.