A Pocket Guide to
By Paul McMullin
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Caused by Leucocytozoon species, protozoan parasites of turkeys, ducks, guinea fowl, rarely chickens. The disease has a short course and morbidity and mortality are high. Simulid flies or culicoid midges are intermediate hosts. Survivors may carry infection. Different species of this parasite have been reported from North America, Asia and Africa.
- Sudden onset of depression.
- Loss of equilibrium.
- Rapid breathing.
- Microscopically - megaschizonts in brains of birds with nervous signs, schizonts in liver, gametes in erythrocytes.
Lesions, histology and blood smears.
Separation from intermediate hosts, disposal of recovered birds.