Topic 121 - Pasteurellosis of sheep and goats (WHITE)

Question 1

There are different clinical forms of pasteurellosis of sheep and goats, name them:

Answer 1

1. Respiratory pasteurellosis
2. Septicaemia
3. Mastitis
4. Acute systemic pasteurellosis

Question 2

Occurrence of pasteurellosis of sheep and goats:

Answer 2

Widespread, quite common

Question 3

Causative agent of pasteurellosis of sheep and goats

Answer 3

P.multocida and M.haemolytica
Biberstenia trehalosi causes acute systemic pasteurellosis

Question 4

Predisposing factors for pasteurellosis of sheep and goats:

Answer 4

1. Cold, humid stables
2. Transportation
3. Long movement
4. Overcrowding
5. Poor quality of the nutrition
6. SE deficiency
7. Mycotoxins

Question 5

Age of when the respiratory pasteurellosis of sheep and goats

Answer 5

Lambs between 1-5 months of age

Question 6

Age of when the septicaemia pasteurellosis of sheep and goats

Answer 6

Below 3 months of age

Question 7

Age of when the mastitis pasteurellosis of sheep and goats

Answer 7

Ewes

Question 8

Age of when the acute systemic pasteurellosis of sheep and goats

Answer 8

3 - 12 months of age

Question 9

How is respiratory pasteurellosis infected in sheep and goats?

Answer 9

Airborne infection

Question 10

How is septicamie pasteurellosis infected in sheep and goats?

Answer 10

Airborne infection

Question 11

How is mastitis pasteurellosis infected in sheep and goats?

Answer 11

Infection from lambs carrying the bacteria

Question 12

How is acute systemic pasteurellosis infected in sheep and goats?

Answer 12

Airborne infection

Question 13

Pathogenesis of respiratory pasteurellosis infected in sheep and goats:

Answer 13

Same as in cattle.

Question 14

Pathogenesis of septicaemic pasteurellosis infected in sheep and goats:

Answer 14

1. Inhalation of the agent
2. Bacteria replicates in upper respiratory tract and the tonsils
3. Bacteria reaches the blood and the parenchymal organs
4. Bacteria reaches the joints, causing arthritis
5. Bacteria reaches the menings and we see meningitis

Question 15

Pathogenesis of mastitis form of pasteurellosis infected in sheep and goats:

Answer 15

1. Source of infection through the lamb, with several helping factors: wounds, viral infections, trauma
2. Bacteria gets into the udder, where it colonises and replicates ⭢ Gangrenous mastitis and the tissue is damaged = no regeneration
3. Toxin responsible mastitis: inflammation and no tissue damage.
4. There is agalactia =no milk, causing the lambs to search for milk with other ewes and this way spreading the disease.
5. Toxin masitis = the udder can recover and there is no continuous problem

Question 16

Pathogenesis of acute systemic form of pasteurellosis infected in sheep and goats:

Answer 16

1. Bacteria is inhaled
2. Bacteria colonise in upper respiratory tract
3. The bacteria is carried asymptomatically, and suddenly appears
4. Bacteria replicates ⭢ The bacterium emboli reaches the blood
5. The emboli blocks the small blood vessels resulting in necrosis

Question 17

Clinical signs of respiratory form of pasteurellosis infected in sheep and goats

Answer 17

Fever
Nasal discharge
Laboured breathing in severe cases
Cough

Chronic = arthritis, middle ear infection, ataxia

Question 18

Clinical signs of septicaemic form of pasteurellosis infected in sheep and goats

Answer 18

Fever
Arthritis
Death, very fast

Question 19

Clinical signs of mastitis form of pasteurellosis infected in sheep and goats

Answer 19

Generally unilateral
Enlarged
Congested
Agalactia = no milk
Ewes generally do not die

Question 20

Clinical signs of acute systemic form of pasteurellosis infected in sheep and goats

Answer 20

Very sudden onset

Recumbency
Extreme depression
Salivation
Sudden death

Question 21

PM lesions of respiratory form of pasteurellosis infected in sheep and goats

Answer 21

Pneumonia, mainly in anterior lobes
Pleuritis
Pericarditis

Question 22

PM lesions of septicaemic form of pasteurellosis infected in sheep and goats

Answer 22

Haemorrhages
Enlarged parenchymal organs
Enlarged lymph nodes

Question 23

PM lesions of mastitis form of pasteurellosis infected in sheep and goats

Answer 23

Generally none, because no death

Question 24

PM lesions of acute systemic form of pasteurellosis infected in sheep and goats

Answer 24

Quite typical !!

Necrosis is the main lesions

Question 25

How to diagnose pasteurellosis of sheep and goats

Answer 25

Bacterial isolation
PCR
Examination of predisposing factors

Question 26

How to treat pasteurellosis of sheep and goats

Answer 26

1. Isolation of ill animals
2. AB treatment
3. Elimination of predisposing factors

Question 27

How to prevent pasteurellosis of sheep and goats

Answer 27

1. Elimination of predisposing factors
2. Vaccines

Question 28

Type of vaccines used for pasteurellosis of sheep and goats

Answer 28

1. Inactivated vaccines
2. Inactivated toxin vaccines