Bovine Flash Notes - Listeriosis Flashcards
what is another name for listeriosis?
circling disease
what is the classic presentation of a cow with listeriosis?
silage fed adult cow with a head tilt/circling due to sensory & motor dysfunction of the trigeminal nerve
what clinical signs are associated with listeriosis?
asymmetric sensory loss on the face, weak jaw closure, head tilt to one side, & circling
what are the tests of choice for diagnosing listeriosis?
clinical signs & CSF analysis (mononuclear pleocytosis & increased protein)
how is listeriosis treated in cattle?
penicillin, sulfonamides, tetracyclines, & ampicillin for 2-4 weeks woth supportive care of iv fluids & dietary maintenance
what is the prognosis for listeriosis?
guarded to poor - poor if recumbent & can’t swallow, 50% is standing & can swallow
how is listeriosis prevented?
complete anaerobic rendering of silage!!!
what agent that causes listeriosis is of zoonotic concern?
listeria monocytogenes
what is the most common encephalitis seen in dairy cows?
listeriosis
T/F: there are no forebrain signs seen in listeriosis such as seizures, aggression, & blindness
TRUE
what is the main source of listeriosis in cattle?
poor silage!!!
what are the typical clinical signs of listeriosis in young birds vs older birds?
younger birds: chronic form with torticulosis, paresis/paralysis, vs in older birds: septicemia with depression, lethargy, & sudden death
