MT4 - Haemorrhagic septicaemia of cattle (G) Flashcards
Haemorrhagic septicaemia of cattle is generally a chronic disease
F
Pasteurella multocida strains are causative agents of haemorrhagic septicaemia of cattle
T
P. multocida, M. haemolytica: can sometimes cause septicemia
Antibiotic treatment at the time of appearance of the clinical signs of haemorrhagic septicaemia of cattle is generally late.
T
Very frequent that the treatment is to late, only early is effective
Bleeding from the nose is a frequent clinical sign of haemorrhagic septicaemia of cattle.
F
- fever, depression,
- serous nasal discharge, profuse salivation
- oedema (larynx): neck, throat, brisket
Haemorrhagic septicaemia occurs most frequently among 2-3 month old calves in endemic areas
F
in endemic areas mainly in 1⁄2-2-year-old animals
The morbidity and mortality of Haemorrhagic septicaemia of cattle is low
F
high morbidity, high mortality
Oedema formation can be a clinical sign of haemorrhagic septicaemia of cattle
T
- fever, depression,
- serous nasal discharge, profuse salivation
- oedema (larynx): neck, throat, brisket
- dyspnoea, listlessness
- diarrhoea, pneumonia
Hemorrhagic septicemia mainly occurs in tropical and sub-tropical areas
T
Pasteurella multocida B:2 and E:2 strains are causative agents of Haemorrhagic septicaemia
T
P. multocida:
- B:2: Southeast-Asia
- E:2: Africa
Monsoon can predispose to haemorrhagic septicaemia
T
predisposing factors:
* monsoon, rainy season
* inanition, exhausting work
Haemorrhagic septicaemia is mainly seen in pigs and horse
F
mainly: buffalo, cattle, other ruminants, wild ruminants
sometimes other species (horse, donkey, pig)
Haemorrhagic septicaemia is mainly an acute disease.
T
After recovering from haemorrhagic septicaemia the animals do not shed the agent.
F
Exotoxins are responsible for haemorrhagic septicaemia
F
virulence factors:
* capsule
* LPS (endotoxin)
The agent of haemorrhagic septicaemia can be carried in the tonsils.
T
Haemorrhagic septicaemia cannot be prevented with vaccine
F
vaccine: inactivated, attenuated
Haemorrhages on the heart are important post mortem signs of haemorrhagic septicaemia.
T
*Pathology: *
peracute:
* haemorrhages,
* serous fluid in the body cavities
* oedema (yellow): sub cutaneous, muscular * enlarged lymph nodes
subacute:
* haemorrhagic gastroenteritis
* fibrinous pleuropneumonia (not extended!)
Haemorrhagic septicaemia is caused by Pasteurella multocida
T
P. multocida, M. haemolytica: can sometimes cause septicemia
Haemorrhagic septicaemia is mainly seen in pig
F
buffalo, cattle, other ruminants, wild ruminants
Oedema can be seen in the case of haemorrhagic septicaemia.
T
- fever, depression,
- serous nasal discharge, profuse salivation
- oedema (larynx): neck, throat, brisket
- dyspnoea, listlessness
- diarrhoea, pneumonia
Haemorrhagic septicaemia is endemic in several European countries
F
it is sporiadic in europe and america
endemic: africa, southern asia
Exhausting work can predispose to haemorrhagic septicaemia
T
predisposing factors:
* monsoon, rainy season
* inanition, exhausting work