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Year 3 respiratory > pig resp diseases > Flashcards

pig resp diseases Flashcards

1
Q

what are 4 factors involved with pig respiratory disease?

A

environment
managements
breed and age
exposure to pathogens

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2
Q

what are some common pathogens in neonates?

A

actinobacillus suis
bordatella bronchiseptica
atrophic rhinitis

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3
Q

what are some common pathogens in pre-weaned pigs?

A 
atrophic rhinitis
bordatella
inclusion body rhinitis
enzootic pneumonia
PRRS
glassers disease
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4
Q

what are some common pathogens in weaners, growers and finishers?

A 
bordatella
glassers disease
actinobacillus
pasturella
mycoplasma
PRRS
PCV
aujeszkyjs
influenza
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5
Q

what pathogens can cause disease in non-immune adults?

A 
glassers disease
actinobacillus
pasteurellosis
enzootic pneumonia
PRRS
influenza
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6
Q

what parasites can infect pigs resp system?

A

metastrongylus

ascaris suum

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7
Q

what is the pathogen responsible for enzootic pneumonia?

A

mycoplasma hyopnumoniae

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8
Q

how is enzootic pneumonia spread and who can it infect?

A
  • spread by aerosol and direct contact

- infect weaned pigs and sows can be carriers

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9
Q

what are some clinical signs of mycoplasma hyopneumoniae?

A 
coughing
low food conversion
growth variance
secondary infection
cranioventral consolidation and red/grey consolidation
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10
Q

where in the lung will lesions have the least impact?

A

cranially as less gas exchange happens there

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11
Q

how can you diagnose enzootic pneumonia?

A
  • lung lesions at slaughter
  • histology
  • paired serology
  • ELISA
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12
Q

what is seen in the herd with actinobacillus pleuropneumoniae?

A

explosive outbreaks with high morbidity and mortality

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13
Q

what are signs associated with actinobacillus pleuropneumoniae?

A

acute fatal resp disease
fibrinous pleuritis
firm lung infarcts
pleural adhesions

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14
Q

how can you diagnose actinobacillus pleuropneumoniae?

A

culture
PCR
gun shot lung lesions
serology

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15
Q

what 2 pathogens cause atrophic rhinitis?

A

pasteurella multocida

bordetella bronchiseptica

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16
Q

what pathogen causes glassiers disease?

A

haemophilus parasuis

17
Q

what are the signs of glassiers disease?

A

polyserositis
pericarditis
fibrin deposition
suppurative bronchopneumonia

18
Q

what pathogen causes aujeszkys disease?

A

swine herpesvirus 1

19
Q

what are some signs of aujeszkys disease?

A 
neurological signs
pneumonia
abortion / mummies
cough
weight loss
fever
20
Q

what are some signs of swine influenza virus?

A 
pyrexia
lethargy
skin erythema
anorexia
conjunctivitis
abortion
interstitial pneumonia
cough
resp distress
bronchiolitis
21
Q

how do you diagnose swine influenza virus?

A

serology
viral isolation
lesions in cranial and middle lobes on pm

22
Q

where does PRRS replicate?

A

macrophages

23
Q

what are some signs of PRRS?

A 
tachypnoea
thumping
eyelid oedema
conjuctivits
can be asymptomatic
24
Q

how do you diagnose PRRS?

A

moderate - severe interstitial pneumonia
viral isolation
serology

25
Q

how do you prevent PRRS?

A

vax

26
Q

what virus are most pigs seropositive to?

A

porcine respiratory coronavirus

27
Q

what are the roles of the two pathogens in atrophic rhinitis?

A

Brodetella - damages osteoblastes

pasteurella - stimulates osteoclasts

28
Q

How is actinobacillus pleuropneumoniae virulent?

A

Apx toxins - kill neutrophils, cytolytic, haemolytis
mass cytokine release - pulmonary infl, haemorrhages, oedema
-takes iron from transferrin

29
Q

what is often seen in the herd with glassers disease?

A

high mortality in the young

30
Q

what can predispose to glassers disease?

A

stress

31
Q

What is another name for aujeszkys disease?

A

pseudorabies

32
Q

who can be infected by aujezkys disease?

A

pigs
dogs
zoontic

33
Q

what are the signs of porcine circovirus?

A

immune suppression
multisystemic wasting post weaning
dermatitis
nephropathy

Year 3 respiratory (11 decks)

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