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== Introduction ==

== Introduction ==

[[Image:Coccidia ruminant.jpg|thumb|right|150px|<i>Eimeria</i> sp. of ruminants - Joaquim Castellà Veterinary Parasitology Universitat Autònoma de Barcelona]] [[Image:Coccidia oocyst ruminant.jpg|thumb|right|150px|Coccidia oocyst from ruminant faeces - Joaquim Castellà Veterinary Parasitology Universitat Autònoma de Barcelona]]  

[[Image:Coccidia ruminant.jpg|thumb|right|150px|<i>Eimeria</i> sp. of ruminants - Joaquim Castellà Veterinary Parasitology Universitat Autònoma de Barcelona]] [[Image:Coccidia oocyst ruminant.jpg|thumb|right|150px|Coccidia oocyst from ruminant faeces - Joaquim Castellà Veterinary Parasitology Universitat Autònoma de Barcelona]]  

Infection is usually sporadic, but once immunity has developed it is likely not to recur. During the neonatal period, passive immunity is sufficient, only after this wanes are clinical signs of the disease apparent.

Infection is usually sporadic, but once immunity has developed it is likely not to recur. During the neonatal period, passive immunity is sufficient, only after this wanes are clinical signs of the disease apparent.

There are many species of coccidia that affect cattle, but ''[[Eimeria spp.|Eimeria]] zuernii, E. bovis'' and ''E. alabamensis'' are by far the most common. ''E. zuernii'' is the most pathogenic of these species.

There are many species of [[:Category:Coccidia|coccidia]] that affect cattle, but ''[[Eimeria spp.|Eimeria]] zuernii, E. bovis'' and ''E. alabamensis'' are by far the most common. ''E. zuernii'' is the most pathogenic of these species.

 

== Clinical Signs ==

== Clinical Signs ==

All species of coccidia produce diarrhoea or dysentry with notable tenesmus.

All species of coccidia produce diarrhoea or dysentry with notable tenesmus.

== Diagnosis ==

== Diagnosis ==

Post mortem examination will reveal diffuse inflammation and thickening of caecal mucosa (and sometimes ileal and colonic mucosa). Scrapings of the mucosa should be taken and viewed microscopically. In an infected animal, masses of gamonts and oocysts will be present in these scrapings.

Post mortem examination will reveal diffuse inflammation and thickening of caecal mucosa (and sometimes ileal and colonic mucosa). Scrapings of the mucosa should be taken and viewed microscopically. In an infected animal, masses of gamonts and oocysts will be present in these scrapings.

== Treatment and Control ==

== Treatment and Control ==

Preventative in-feed medication can be supplied such as decoquinate.  

Preventative in-feed medication can be supplied such as decoquinate.  

Andrews, A.H, Blowey, R.W, Boyd, H and Eddy, R.G. (2004) Bovine Medicine (Second edition), Blackwell Publishing <br>Fox, M and Jacobs, D. (2007) Parasitology Study Guide Part 1: Ectoparasites Royal Veterinary College <br>Radostits, O.M, Arundel, J.H, and Gay, C.C. (2000) Veterinary Medicine: a textbook of the diseases of cattle, sheep, pigs, goats and horses Elsevier Health Sciences <br>

Radostits, O.M, Arundel, J.H, and Gay, C.C. (2000) '''Veterinary Medicine: a textbook of the diseases of cattle, sheep, pigs, goats and horses''''' Elsevier Health Sciences''

[[Category:Coccidia]] [[Category:Intestinal_Diseases_-_Cattle]] [[Category:Expert_Review - Farm Animal]]

[[Category:Intestinal_Diseases_-_Cattle]] [[Category:Expert_Review - Farm Animal]]