exam 2 bovine inferetility n abortion virsus Flashcards
what is the most frequently diagnosed casue of viral abortion in NA???****
*****IBR****
What are the 2forms of transmission
venereal form and systemic
how can IBR be transmitted venereally
by instruments of AI
in the systemic form how is IBR virus shed
in the aborted fetus n respiratory
what virus can cause abortion
MLV
what is the common abortion months seen in IBR
coomly abort between 4-8mo of gestation
for the veneral form what are some things u can see
u can pustules, nodules, ulcers, and erosiions on vulva n penis
what is this pix of?
the vereal form of IBD
what is the tx for the veneral form
lesions spontaneously resolve in 1-2wks
what are 2genotypes with BVD
BVD1, BVD2
what are two genotypes seen with BVD
cytopathic and noncytopathic
is it the cyotpathic or the noncyotpathic that has PI
noncytopathic
is hortizontal or vertical transmission the primary source of BVD spread
vertical
what are some congential defects seen with BVD
hydroencephalis
and loss of hair
why is PI most problemeatic
because the cells dont know the virus is growing within them
what are some outcomes of fetal infection in BVD
EED
and abortion
what day can the fetus fight off infectin
120days if before than PI
tell me some things about PI…. can they look normal or look pretty horrible?
can they show you chronic respiraotry dz?
They can look normal but really they are not
they can show respiratory signs
so which one is PI?
BOTH of them
which one has a more ecomically impact IBD or BVD
BVD
BVD can affect reproduction and production
yup! si!
if you do the virus isolation what is the problem with it
you have to wait until the cow is greater than 6mo so maternal abx dont get in the way
what dx is the gold standard for BVD
virus isolation
how can u control BVD
By having a closed herd
