180. Bovine anaplasmosis. Flashcards

1
Q

Anaplasmosis of cattle Occurence?

A

Anaplasmosis of cattle

Occurrence:

  • worldwide,
  • more frequent on tropics
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2
Q

Aetiology of Anasplasmosis?

A

Aetiology:

  • A. marginale
  • A. centrale
  • A. ovis
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3
Q

Epidemiology of Anasplasmosis?

A

Epidemiology

  • Transmission: ticks, blood sucking arthropods, iatrogenic
  • Natural focal infection
  • Susceptibility: ruminants
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4
Q

Pathogenesis?

A

Pathogenesis

  • RBCs are infected
  • Macrophages phagocyte the infected RBCs
  • Anaemia (no haematuria)
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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)
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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!!
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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
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8
Q

Treatment of Anasplasmosis?

A

Treatment:

  • oxytetracycline
  • repeated treatment can result eradication
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9
Q

Prevention of anasplasmosis?

A

Prevention

  • control of ticks;
  • isolated keeping;
  • isolation of diseased animals
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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
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