292
edits
Changes
Jump to navigation
Jump to search
no edit summary
*All species are host specific
*All species are host specific
*Sporulated oocyst conatins 2 sporocysts each with 4 sporozoites
*Sporulated oocyst contains 2 sporocysts each with 4 sporozoites
**Oocyst measures 20-50μm
**Oocyst measures 20-50μm
*After oocysts are ingested, sporozoites are released which penetrate the intestinal epithelium
*After oocysts are ingested, sporozoites are released which penetrate the intestinal epithelium
*2 asexual phases of multiplication called schizongony occur followed by a phases of sexual multiplication called gametogeny
*2 asexual phases of multiplication called schizogony occur followed by a phase of sexual multiplication called gametogony
*Zygote develops an oocyst which is shed in the faeces
*Zygote develops into an oocyst which is then shed in the faeces
**Oocyst measures 20-30μm
**Oocyst measures 20-30μm
**''Eimeria brunetti''
**''Eimeria brunetti''
**All highly pathogenic
**All highly pathogenic
**Form large sub-epithelial second generation schizontsat the base of intestinal crypts
**Form large sub-epithelial second generation schizonts at the base of intestinal crypts
**Deep eruptions form when cells rupture to release merozoites
**Deep eruptions form when cells rupture to release merozoites
**Destruction of crypt stem cells and marked haemorrhage
**Destruction of crypt stem cells and marked haemorrhage
**Region of intestine affected
**Region of intestine affected
**Appearance of lesion
**Appearance of lesion
**Presence or adsence of haemorrhage
**Presence or absence of haemorrhage
**Size of schizonts and oocysts found in mucosal scrapings
**Size of schizonts and oocysts found in mucosal scrapings
*[[Vaccines - WikiBlood|Vaccines]]
*[[Vaccines - WikiBlood|Vaccines]]
**Paracox
**Paracox
***Multivalent attenuated [[Vaccines - WikiBlood#What antigen(s) do we use in the vaccine?|live vaccine]] for replcement layers and broilers
***Multivalent attenuated [[Vaccines - WikiBlood#What antigen(s) do we use in the vaccine?|live vaccine]] for replacement layers and broilers
***Contains 7 live strains of ''Eimeria''
***Contains 7 live strains of ''Eimeria''
***Lack the most pathogenic life cycle stage making the prepatent period shorter
***Lack the most pathogenic life cycle stage making the prepatent period shorter
*Several ''Eimeria'' species
*Several ''Eimeria'' species
*Another coccidia species which produces 8 sporozoites which are not enclosed in a sporocyst
*Another coccidia species which produces 8 sporozoites but these are not enclosed in a sporocyst
*Causes severe enteritis and mortality in ducklings
*Causes severe enteritis and mortality in ducklings
**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]]
**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 dysentery, tenesmus and sloughed mucosa
**Oocysts are spherical and measure 16μm
**Oocysts are spherical and measure 16μm
*Mainly occurs in calves in poor conditions and brought-in calves
*Mainly occurs in calves in poor conditions and bought-in calves
**Also occurs in suckler calves turned out in spring
**Also occurs in suckler calves turned out in spring
**Improve sanitation
**Improve sanitation
**Increase bedding
**Increase bedding
**Raise faecal and water troughs to avoid faecal contamination
**Raise food and water troughs to avoid faecal contamination
*Preventative in-feed medication
*Preventative in-feed medication
**E.g. Decoquinate
**E.g. Decoquinate
*Injectible antiprotozoals may limit oocyst production but animals should still be moved to a clean environment
*Injectable antiprotozoals may limit oocyst production but animals should still be moved to a clean environment
**E.g. Sulphamethoxypyridazine
**E.g. Sulphamethoxypyridazine
==Coccidia of Horses==
==Coccidia of Horses==
*Only one atypical ''Eiemria''
*Only one atypical ''Eimeria''
*Forms large subepithelial gametocytes in villi
*Forms large subepithelial gametocytes in villi