porcine respiratory diseases Flashcards
what is the target cell for porcine reproductive and respiratory syndrome virus and where does it replicate
alveolar macrophage
replicates in mucosal, pulmonary or regional lymph nodes
how is this virus transmitted
inhalation ingestion sex skin damage contaminated needles transplacental
clinical disease caused by PRRS
Sow: abortion or premature farrowing. stillborn or weak pigs
neonate: pneumonia, dyspnoea, CNS signs, high mortality
growers: moderate mortality, failiure to thrive, vulnerable to secondary infections
finishers: fever and inappetance
Boar: fever, semen changes
what other disease enhances the effect of PRRSV?
mycoplasma
how would you treat/prevent PSSRV
standard penecillin course
vaccines to prevent
what virus is usually endemic within large herds
porcine influenza virus
what strains of influenza affect pigs and how long does the immunity accquired post infection lasts
H1N1, H1N2, H3N2
immunity for 6 months after
what strains affect pigs and how long does the immunity accquired post infection lasts
H1N1, H1N2, H3N2
immunity for 6 months after
what are the clinical signs in sows and piglets
sows=fever, widespread coughing, pneumonia (respiratory distress lasts 7-10 days)
piglets=coughing, pneumonia, fever
(unusual to see disease in piglets due to immunity by MDA’s
What disease does porcine circovirus 2 cause
Reproductive failiure and mummified/non viable piglets are born.
how is porcine circovirus 2 transmitted
all possible routes basically
transplacental or via coitus.
board shed low levels of virus in semen
(vaccine available)
what is the causative agent of enzootic pneumonia?
mycoplasma hyopneumoniae
is the incubation long for enzootic pneumonia?
yes!
2-8 weeks
what is the disease caused by enzootic pneumonia
rarely any. very unproblematic disease
bacterial disease of URT seen in pigs as well as cats and dogs
bordatella bronchiseptica
