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| | [[Coccidiosis]] | | [[Coccidiosis]] |
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| | [[Image:Coccidia.jpg|thumb|right|150px|Coccidia - Joel Mills]] | | [[Image:Coccidia.jpg|thumb|right|150px|Coccidia - Joel Mills]] |
| − | ''The following refers specifically to the life cycle of Coccidia spp.''
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| | *The '''oocyst''' is the resistant stage in the environment | | *The '''oocyst''' is the resistant stage in the environment |
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| − | ==Coccidia of Poultry==
| + | [[Coccidia - Poultry]] |
| − | [[Image:Buff orpington.jpg|thumb|right|150px|Buff orpington - nabrown RVC]] | |
| − | [[Image:Eimeria Sporulated.jpg|thumb|right|150px|Sporulated ''Eimeria'' - Joaquim Castellà Veterinary Parasitology Universitat Autònoma de Barcelona]]
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| − | *Direct life cycle
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| − | *1 week prepatent period
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| − | *After oocysts are ingested, sporozoites are released which penetrate the intestinal epithelium
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| − | *2 asexual phases of multiplication called schizogony occur followed by a phase of sexual multiplication called gametogony
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| − | *Zygote develops into an oocyst which is then shed in the faeces
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| − | **Oocyst measures 20-30μm
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| − | *For each oocyst ingested, thousands are shed
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| − | *Life cycle is '''self-limiting'''
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| − | **Organisms from a single infection go through the sequence of developmental stages synchronously
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| − | **Organisms leave the body simultaneously as oocysts
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| − | *Oocysts are only infective once they have sporulated
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| − | **Sporulation requires warmth, moisture and oxygen
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| − | **Takes 2-3 days in broiler houses
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| − | *Oocysts contain 4 sporocysts each with 2 sporozoites
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| | + | [[Coccidiosis - Poultry]] |
| | '''Pathogenesis''' | | '''Pathogenesis''' |
| | *7 important ''Eimeria'' species | | *7 important ''Eimeria'' species |