Topic 119 - Respiratory pasteurellosis of cattle (WHITE)

Question 1

How many pasteurellosis diseases can we find in cattle?

Answer 1

2

1. Haemorrhagic septicaemia
2. Respiratory pasteurellosis

Question 2

Occurrence of Respiratory pasteurellosis in cattle

Answer 2

Worldwide, there is no geographical correlation

Question 3

Causative agent for Respiratory pasteurellosis in cattle:

Answer 3

Pasteurella multocida and Mannheimia haemolytica

Question 4

Is Respiratory pasteurellosis in cattle a facultative or obligate pathogen?

Answer 4

Facultative

Question 5

Name predisposing factors for Respiratory pasteurellosis in cattle:

Answer 5

Transportation
Management: nutrition, stress, overcrowding
Starvation
Mixing animals of different origin
Virus infections: Parainfluenza, adeonvirus, IBR
Mycplasma, chlamydia

Question 6

How is Respiratory pasteurellosis in cattle spread?

Answer 6

Airborne infection ⭢ Close contact between animals are needed

The bacteria is inhaled

Question 7

How is Respiratory pasteurellosis in cattle shed?

Answer 7

Shed in tracheal discharge ⭢ the source of infection

Question 8

Age mostly affected by Respiratory pasteurellosis in cattle:

Answer 8

Calves between 1-3 months
With predisposing factors sporadically older animals

Question 9

Pathogenesis of Respiratory pasteurellosis in cattle:

Answer 9

1. Bacteria is inhaled
2. Bacteria colonises on upper respiratory tract and tonsils ⭢ asymptomatic carriage
3. With predisposing factors: The bacteria propagates and the bacteria spread towards the lungs
4. Causing pneumonia

Question 10

Clinical signs of Respiratory pasteurellosis in cattle:

Answer 10

1. In beginning: Fever
2. Cough
3. Nasal discharge: In beginning its mild and in final stage is is purulent
4. Ocular discharge
5. Dyspnoea, which becomes more and more severe

Question 11

Pathological lesions in case of Respiratory pasteurellosis in cattle:

Answer 11

Mainly limited to the lungs

1. Tracheitis
2. Bronchitis
3. Fibrinous pneumonia, mainly in the anterior lobes
4. Fibrinous pleuritis ⭢ Quite common
5. Fibrinous pericarditis ⭢ Sometimes seen

Question 12

How to diagnose Respiratory pasteurellosis in cattle:

Answer 12

1. Isolation, from nasal discharge ⭢ Simplest and most reliable
2. Serology is not used in diagnostic work

Question 13

How to treat Respiratory pasteurellosis in cattle:

Answer 13

1. Isolate the ill animals !!
2. We treat with wide range AB - penicillin can be used
3.AB treatment supported with elimination of predisposing factors

Question 14

Which type of AB is recommened to use in case of Respiratory pasteurellosis in cattle?

Answer 14

Macrolides

Question 15

How to prevent Respiratory pasteurellosis in cattle:

Answer 15

1. Prevention of predisposing factors: Keep individual cages for calves
2. Vaccines

Question 16

Type of vaccine used for Respiratory pasteurellosis in cattle:

Answer 16

1. Killed vaccine ⭢Mainly used
2. Toxoid vaccine ⭢ Not only serotype specific protection, but it is active against all types of M. haemolytica as well