Dr. Beth Johnson, DVM, Director of Animal Health, Kentucky Department of Agriculture
(Previously published online with Hoof Print – The Small Ruminant Blog, Kentucky Sheep and Goat Development Office: November 17, 2023)
Corynebacterium pseudotuberculosis infection, also known as caseous lymphadenitis (CL) is a bacterial disease which infects sheep and goats. The bacteria prefers to set up shop in the lymph nodes of sheep and goats, resulting in a walled off abscess of caseous material within the lymph node. As we all know, lymph nodes are present throughout the body; therefore, this bacteria can infect both external and internal lymph nodes resulting in unthriftiness, loss of milk and meat production, premature culling and is responsible for many sudden deaths. When the abscesses are present within internal lymph nodes, the kidney, liver, gastrointestinal tract, lungs and even brain tissue may be affected. Animals become infected by exposure to infectious exudate from a draining abscess or contact with a contaminated inanimate object, i.e. feed troughs, in the environment which have been contaminated by the exudate from a draining abscess. Continue reading Should I be Concerned about Contagious Abscesses in my Small Ruminant Operation?