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*''Eimeria tenella''
*''Eimeria tenella''
**Swollen caeca
**Swollen [[Caecum - Anatomy & Physiology|caeca]]
**Thickening of wall
**Thickening of wall
**Dark colouring containing a core of necrotic tissue and blood
**Dark colouring containing a core of necrotic tissue and blood
**2 important pathogenically
**2 important pathogenically
*''Eimeria'' in caeca causes petechial haemorrhages and caseous caecal cores
*''Eimeria'' in [[Caecum - Anatomy & Physiology|caeca]] causes petechial haemorrhages and caseous [[Caecum - Anatomy & Physiology|caecal]] cores
*''Eimeria'' in the anterior and mid-intestine causes necrotic enteritis and petechial haemorrhages
*''Eimeria'' in the anterior and mid-intestine causes necrotic enteritis and petechial haemorrhages
*3 ''Eimeria'' species
*3 ''Eimeria'' species
*2 intestinal species causing macroscopic lesions in kidney tubules
*2 intestinal species causing macroscopic lesions in [[Urinary System - Anatomy & PhysiologyThe Kidney|kidney tubules]]
**Oocysts carried in urine and pass out with faeces
**Oocysts carried in urine and pass out with faeces
*Causes severe enteritis and mortality in ducklings
*Causes severe enteritis and mortality in ducklings
**Haemorrhages and pale focal lesions in small intestine
**Haemorrhages and pale focal lesions in [[Small Intestine - Anatomy & Physiology|small intestine]]
===Coccidia of Game Birds===
===Coccidia of Game Birds===
*3 main species
*3 main species
*Caecal species most pathogenic causing white caecal cores
*[[Caecum - Anatomy & Physiology|Caecal]] species most pathogenic causing white [[Caecum - Anatomy & Physiology|caecal]] cores
==Coccidia of Cattle==
==Coccidia of Cattle==
*''Eimeria bovis''
*''Eimeria bovis''
**Endogenous stages in central lacteal of villi and epithelial cells of caecum and colon
**Endogenous stages in central lacteal of villi and epithelial cells of [[Caecum - Anatomy & Physiology|caecum]] and [[Colon - Anatomy & Physiology|colon]]
**Causes [[Intestine Diarrhoea - Pathology|diarrhoea]] and enteritis
**Causes [[Intestine Diarrhoea - Pathology|diarrhoea]] and enteritis
**Oocysts are 28x20μm
**Oocysts are 28x20μm
*''Eimeria zuernii''
*''Eimeria zuernii''
**Endogenous stages in connective tissue of lamina propria of the lower small intestine and in the epithelial cells of the caecum and colon
**Endogenous stages in connective tissue of lamina propria of the lower [[Small Intestine - Anatomy & Physiology|small intestine]] and in the epithelial cells of the [[Caecum - Anatomy & Physiology|caecum]] and [[Colon - Anatomy & Physiology|colon]]
**More pathogenic than ''Eimeria bovis''
**More pathogenic than ''Eimeria bovis''
**Causes blood stained dysentry, tenesmus and sloughed mucosa
**Causes blood stained dysentry, tenesmus and sloughed mucosa
*Post-mortem
*Post-mortem
**Diffuse inflammation and thickening of caecal mucosa (and sometimes ileal and colonic mucosa)
**Diffuse inflammation and thickening of [[Caecum - Anatomy & Physiology|caecal]] mucosa (and sometimes [[Ileum - Anatomy & Physiology|ileal]] and [[Colon - Anatomy & Physiology|colonic]] mucosa)
**Masses of gamonts and oocysts in scrapings
**Masses of gamonts and oocysts in scrapings
==Coccidia of Rabbits==
==Coccidia of Rabbits==
*3 pathogenic ''Eimeria'' species
*3 pathogenic ''Eimeria'' species
**2 in the caecum
**2 in the [[Caecum - Anatomy & Physiology|caecum]]
**1 in the bile duct
**1 in the bile duct
*''Eimeria steidae''
*''Eimeria steidae''
**Parasitises the bile duct epithelium
**Parasitises the bile duct epithelium
**Travels via the bile duct to the liver where it forms large white nodules
**Travels via the bile duct to the [[Liver - Anatomy & Physiology|liver]] where it forms large white nodules
**Oocysts travel in the bile and are passed out in the faeces
**Oocysts travel in the bile and are passed out in the faeces
**Causes ascites, [[Intestine Diarrhoea - Pathology|diarrhoea]], weight loss and polyuria
**Causes ascites, [[Intestine Diarrhoea - Pathology|diarrhoea]], weight loss and polyuria