180. Bovine anaplasmosis. Flashcards
1
Q
Anaplasmosis of cattle Occurence?
A
Anaplasmosis of cattle
Occurrence:
- worldwide,
- more frequent on tropics
2
Q
Aetiology of Anasplasmosis?
A
Aetiology:
- A. marginale
- A. centrale
- A. ovis
3
Q
Epidemiology of Anasplasmosis?
A
Epidemiology
- Transmission: ticks, blood sucking arthropods, iatrogenic
- Natural focal infection
- Susceptibility: ruminants
4
Q
Pathogenesis?
A
Pathogenesis
- RBCs are infected
- Macrophages phagocyte the infected RBCs
- Anaemia (no haematuria)
5
Q
Clinical signs Anasplasmosis?
A
Clinical signs
- In young animals milder, in older animals more severe signs
- Fever, anorexia, anaemia (not haemolytic – no haematuria),
- jaundice (incr rate of Hb decomposition),
- hypoxia,
- abortion (consequence of anoxia)
6
Q
PM lesions?
A
PM lesions
- Haemorrhages, oedema, anaemia, jaundice; splenomegaly, enlargement of LNs
- Gall sickness (increased amount of bile)
- Urine is normal! – no haematuria!!
7
Q
Diagnosis of Anasplasmosis?
A
Diagnosis
- Epidemiology – clinical signs – PM lesions
- Detection of the agent: Giemsa (edge RBC), IF, PCR
- Serology: CFT, micro agglutination, precipitation, ELISA
8
Q
Treatment of Anasplasmosis?
A
Treatment:
- oxytetracycline
- repeated treatment can result eradication
9
Q
Prevention of anasplasmosis?
A
Prevention
- control of ticks;
- isolated keeping;
- isolation of diseased animals
10
Q
Disease of cattle caused by A.bovis?
A
Disease of cattle caused by A. bovis
- Africa, Middle East, India, America
- Replication in monocytes
- Clinical signs resemble heartwater