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'''Diagnosis'''
'''Diagnosis'''
*Post-mortem diagnosis of lesion severity
**Region of intestine affected
**Appearance of lesion
**Presence or adsence of haemorrhage
**Size of schizonts and oocysts found in mucosal scrapings
*''Eimeria acervulina''
**Proximal gut
**Thickening of walls
**'White ladder lesions' produced by dense foci of gamonts and oocysts
**Watery exudate
*''Eimeria maxima''
**Mid-gut
**Thickening of walls
**Pink exudate
*''Eimeria tenella''
**Swollen caeca
**Thickening of wall
**Dark colouring containing a core of necrotic tissue and blood
*Lesion scoring is the best method of diagnosing the severity of the lesions and therefore the causative ''Eimeria'' species
*''Eimeria necatrix''
**Mid-gut
**Ballooning of wall
**White spots and petechiae forming 'salt and pepper' lesions
**Haemorrhage into lumen
'''Immunity'''
'''Immunity'''