Topic 122 - Pasteurellosis of swine and rabbits (WHITE)

Question 1

Name the different pasteurellosis of swine:

Answer 1

1. Acute haemorrhagic septicaemia
2. Pneumonia
3. Atrophic rhinitis

Question 2

Occurrence of acute haemorrhagic septicaemia of swine

Answer 2

Sporadic, rare in Europe.

Appears mainly in tropical countries

Question 3

Causative agent of acute haemorrhagic septicaemia of swine:

Answer 3

Pasteurella multocida

Question 4

Clinical signs of acute haemorrhagic septicaemia of swine:

Answer 4

Fever
Anorexia
Recumbency
Oedema on the neck
Cyanotic skin, generally seen on neck and brisket
Skin necrosis, seen above the oedema

Question 5

PM lesions in case of acute haemorrhagic septicaemia of swine:

Answer 5

Haemorrhages
Enlarged lymph nodes
Haemorrhagic gastroenteritis

Question 6

How to diagnose acute haemorrhagic septicaemia of swine:

Answer 6

Isolation of the agent from the lesions

Question 7

Treatment for acute haemorrhagic septicaemia of swine:

Answer 7

AB, but due to the fast onset, the probability of recover is quite low

Question 8

Prevention methods for acute haemorrhagic septicaemia of swine:

Answer 8

No effective preventing methods, because the predisposing factors are not known

Vaccination is not done because the disease is sporadic

Question 9

Occurence of pneumonic form of pasteurellosis in swine

Answer 9

Worldwide, quite common

Question 10

Causative agent for pneumonic form of pasteurellosis in swine:

Answer 10

P. multocida A - sometimes D

!! They are non toxin producing strains !!

Question 11

Age most susceptible to pneumonic form of pasteurellosis in swine

Answer 11

Growers and fattening pigs

Question 12

How is pneumonic form of pasteurellosis in swine infected?

Answer 12

By inhalation

Question 13

Predisposing factors of pneumonic form of pasteurellosis in swine:

Answer 13

Management
Nutrition
Stress
Overcrowding

Mycplasma
Circovirus
CSF
ASF

Question 14

Pathogenesis of pneumonic form of pasteurellosis in swine

Answer 14

1. Infection by inhalation
2. Colonisation on the upper respiratory tract and tonsils
3. Asymptomatic carriage
4. With predisposing factors: the bacteria replicates, reaching high cell count and reaches the lungs
5. Sometimes the bacteria can enter the blood stream, but mainly limited to the lungs

Question 15

Clinical sign of pneumonic form of pasteurellosis in swine

Answer 15

Fever
Cough
Nasal discharge
Dyspnoea
Severe cases: decreased weight

Question 16

PM lesions of pneumonic form of pasteurellosis in swine

Answer 16

Pneumonia, first serous later fibrinous
Fibrinous pleuritis

Question 17

How to diagnose pneumonic form of pasteurellosis in swine:

Answer 17

Bacterium isolation

Question 18

Treatment of pneumonic form of pasteurellosis in swine:

Answer 18

AB, both individual and herd treatmen

Question 19

Prevention methods for pneumonic form of pasteurellosis in swine

Answer 19

Prevention of predisposing factors, especiallt the viral ones

!! NO vaccine !!

Question 20

Another name for pasteurellosis in rabbit

Answer 20

Snuffles

Question 21

Occurrence of pasteurellosis in rabbit

Answer 21

Worldwide, mainly seen in large scale farms

Question 22

Causative agent of pasteurellosis in rabbit

Answer 22

P. multocida A

Question 23

Predisposing factors for pasteurellosis in rabbit

Answer 23

Generally suboptimal environmental conditions

1. Humid, cold environment
2. Ammonia, dust, ventilation problems
3. Mixing and overcrowding

Question 24

Age susceptible to pasteurellosis in rabbit

Answer 24

The disease begins around weaning, at 4-5 weeks of age.

BUT, mainly seen in 2-3 month old animals

Question 25

How is pasteurellosis in rabbit spread/infected?

Answer 25

By inhalation

Question 26

Pathogenesis of pasteurellosis in rabbit

Answer 26

1. Infection
2. Asymptomatic carriage
3. With predisposing factors: Bacteria replicates on mucus membrane and reaches the lungs
4. There is a bronchopneumonia and conjunctivitis
5. The bacteria reaches the blood = septicaemia
6. The bacteria reaches the parenchymal organs, middle/inner ear and the subcutaneous tisse and we see purulent inflammation

Question 27

Clinical signs of pasteurellosis in rabbit

Answer 27

1. Nasal discharge - Mucoid and sticky, causing laboured breathing
2. Conjunctivitis, very frequent
3. Septicaemia

Question 28

PM lesions of pasteurellosis in rabbit:

Answer 28

1. Purulent bronchopneumonia
2. Abscesses
3. Pyometra
4. inflammation of organs
5. Otitis media or otitis interna

Question 29

How to diagnose pasteurellosis in rabbit:

Answer 29

Bacterium isolation

Question 30

Differential diagnosis of pasteurellosis in rabbit

Answer 30

Staphylococcus aureus
Bordetella bronchoseptica

They can also cause a mixed infection

Question 31

Treament of pasteurellosis in rabbit

Answer 31

1. AB, can teoretically be used. The lesions will still remain and they will be the reason for the mortality
2. Elimination of predisposing factors and vaccination

Animals remain carries

Question 32

Prevention methods for pasteurellosis in rabbit

Answer 32

1.Elimination of predisposing factors
2. Vaccination with serospecific protection

Question 33

Vaccination types used for pasteurellosis in rabbit

Answer 33

Inacivated vaccines