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sod disease

British  

noun

  1. vet science a disease of poultry characterized by blisters and scabs on the feet and legs

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of sod disease

from prairie sods that the birds walked on in the US when the disease was first reported in 1920