This section is from "The Domestic Encyclopaedia Vol3", by A. F. M. Willich. Amazon: The Domestic Encyclopaedia.
Felt-Rot, a disorder incident to sheep, in which the hair or wool falls off spontaneously—It arises from various causes, but more especially in consequence of a sudden change from scanty or bad provender to full feeding; also from a local weakness in the skin, which parts with the wool; and, lastly, from the Scab, .loosening the hair at its roots.—This malady may be prevented by proper attention to the animals; by giving them wholesome food, and in regular propoitions, particularly during the winter. Should it, however, originate from the scab, the removal-of that distemper will also cure the pelt-rot.
 
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