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Question 1

(Actinobacillus Suis and A. pleuropneumoniae)

1. are they normal flora?
2. opportunistic pathogen of what?

Answer 1

1. no
2. young pigs

Question 2

(Actinobacillus Suis)

1. many asymptomatic animals carry it - is it considered normal flora?
2. usually affects what age?

causing what?

3. In older pigs associated with what?
4. rare cause of what in horses?
5. vaccines?
6. sensitive to antibiotcs?

Answer 2

1. NO!

2. young pigs

septicemia and endocarditis

3. focal necrotizing pneumonia and with subcutaneous abcesses in the neck shoulder and flank
4. respiratory infections
5. yes - autogenous (used on same farm)
6. yes - many (ampicillin, amoxycillin, oxytetracycline)

Question 3

(Actinobacillus Pleuropneumoniae)

1. found where in pigs?

2. is it commensal?

3. causes contagious pleuronpneumonia in shwat age pigs?

4. can disesase be fatal?

5. exposure is via what?
6. what lesion is observed?

Answer 3

1. upper respiratory tract

2. NO - even though may have asympomatic carriers

3. young (<5 months)

4. yes

5. inhalation
6. fibrinous pluerisy

Question 4

(Actinobacillus Pleuropneumoniae)

1-3. what three forms + how serious each is?

4. diagnosis?
5. organism is sensitve to what?
6. can feed antibiotics be used?
7. vaccines act against what?
8. Vaccinated older pigs aren’t resistant - but what?
9. piglets are well protected at 4-6 weeks by what?

Answer 4

1. chronic - show resp distress
2. acute - difficulty swallowing, blood from nose/mouth - death can occur due to cardiac failure
3. peracute - very serious - bloody froth at mouth - death from cardiac failure
4. culture from blood/lung exudate

or ELISA

5. a variety of antimicrobials
6. no - not high enough conc + animals don’t eat
7. RTX toxins
8. severity decreased
9. maternal antibodies

Question 5

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