Table 1 Pathogenicity, type of disease caused and region of development of the seven recognised species of Eimeria that cause coccidiosis in chickens (Blake and Tomley 2014; Cisman et al. 2020; Horton-Smith and Long 1965; Joyner 1958; Joyner and Davies 1960; Long, 1967; 1968; Reid et al. 2014; Williams 1998)
Eimeria Species | Gross pathological lesions | Haemorrhagic disease | Malabsorptive disease | Region of development |
|---|---|---|---|---|
E. brunetti | ✓ | ✓ | ✕ | Lower intestine |
E. necatrix | ✓ | ✓ | ✕ | Mid-intestine and caeca |
E. tenella | ✓ | ✓ | ✕ | Caeca |
E. acervulina | ✓ | ✕ | ✓ | Duodenum |
E. maxima | ✓ | ✕ | ✓ | Mid-intestine |
E. mitis | ✕ | ✕ | ✓ | Mid-intestine |
E. praecox | ✕ | ✕ | ✓ | Duodenum |