pig resp diseases Flashcards
what are 4 factors involved with pig respiratory disease?
environment
managements
breed and age
exposure to pathogens
what are some common pathogens in neonates?
actinobacillus suis
bordatella bronchiseptica
atrophic rhinitis
what are some common pathogens in pre-weaned pigs?
atrophic rhinitis bordatella inclusion body rhinitis enzootic pneumonia PRRS glassers disease
what are some common pathogens in weaners, growers and finishers?
bordatella glassers disease actinobacillus pasturella mycoplasma PRRS PCV aujeszkyjs influenza
what pathogens can cause disease in non-immune adults?
glassers disease actinobacillus pasteurellosis enzootic pneumonia PRRS influenza
what parasites can infect pigs resp system?
metastrongylus
ascaris suum
what is the pathogen responsible for enzootic pneumonia?
mycoplasma hyopnumoniae
how is enzootic pneumonia spread and who can it infect?
- spread by aerosol and direct contact
- infect weaned pigs and sows can be carriers
what are some clinical signs of mycoplasma hyopneumoniae?
coughing low food conversion growth variance secondary infection cranioventral consolidation and red/grey consolidation
where in the lung will lesions have the least impact?
cranially as less gas exchange happens there
how can you diagnose enzootic pneumonia?
- lung lesions at slaughter
- histology
- paired serology
- ELISA
what is seen in the herd with actinobacillus pleuropneumoniae?
explosive outbreaks with high morbidity and mortality
what are signs associated with actinobacillus pleuropneumoniae?
acute fatal resp disease
fibrinous pleuritis
firm lung infarcts
pleural adhesions
how can you diagnose actinobacillus pleuropneumoniae?
culture
PCR
gun shot lung lesions
serology
what 2 pathogens cause atrophic rhinitis?
pasteurella multocida
bordetella bronchiseptica
what pathogen causes glassiers disease?
haemophilus parasuis
what are the signs of glassiers disease?
polyserositis
pericarditis
fibrin deposition
suppurative bronchopneumonia
what pathogen causes aujeszkys disease?
swine herpesvirus 1
what are some signs of aujeszkys disease?
neurological signs pneumonia abortion / mummies cough weight loss fever
what are some signs of swine influenza virus?
pyrexia lethargy skin erythema anorexia conjunctivitis abortion interstitial pneumonia cough resp distress bronchiolitis
how do you diagnose swine influenza virus?
serology
viral isolation
lesions in cranial and middle lobes on pm
where does PRRS replicate?
macrophages
what are some signs of PRRS?
tachypnoea thumping eyelid oedema conjuctivits can be asymptomatic
how do you diagnose PRRS?
moderate - severe interstitial pneumonia
viral isolation
serology
