Ovine foot diseases Flashcards
what are the main differences bw CODD and BDD
CODD:
shouldnt foot trim
more severe
lose entire hoof capsule
how do you tx ovine foot diseases
footbathing - cu sulphate or formalin
trimming - NOT CODD
vaccine if pos
pen, OTC (systemic or topical), macrolides
what is the prevalence of CODD in UK
50% of UK flock; with 2-50% prevalence of dz
how is CODD transmitted?
dairy cows
biosec
ruminant GI organism - poo
fomites - trimmers etc
desc the dz progression of ovine footrot
begins as scald
hoof wall separated from tissue
removed
what agents is assoc with ovine foot rot
dichelobacter nodosus
what are the features of d. nodosus
gram - rod anaerobe fimbriae (very antigenic) produces proteases to digest skin etc likes wet and mild weather, easily dessicated
what other agent other than d. nodosus may be implicated in ovine footrot?
f. necrophorum
what is unusual about the vaccine for ovine footrot
can be used as a tx not just preventative
what is another name for ovine digital dermatitis?
scald
what is the prevalence of ovine foot rot
90% flock have it with dz prev of 4%
what is the prevalence of ovine scald
96% flock with dz prev of 7%
desc the dz of scald?
no underrunning of hoof wall
no smell
red inflamed skin bw claw
grey scum above it
what is the agent to cause scald?
dichelobacter nodosus, partic if wet underfoot
