Difference between revisions of "Coccidia - Poultry"
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(Created page with 'thumb|right|150px|Buff orpington - nabrown RVC [[Image:Eimeria Sporulated.jpg|thumb|right|150px|Sporulated ''Eimeria'' - Joaquim Castellà Veterinary…') |
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Revision as of 22:09, 26 June 2010
- Direct life cycle
- 1 week prepatent period
- After oocysts are ingested, sporozoites are released which penetrate the intestinal epithelium
- 2 asexual phases of multiplication called schizogony occur followed by a phase of sexual multiplication called gametogony
- Zygote develops into an oocyst which is then shed in the faeces
- Oocyst measures 20-30μm
- For each oocyst ingested, thousands are shed
- Life cycle is self-limiting
- Organisms from a single infection go through the sequence of developmental stages synchronously
- Organisms leave the body simultaneously as oocysts
- Oocysts are only infective once they have sporulated
- Sporulation requires warmth, moisture and oxygen
- Takes 2-3 days in broiler houses
- Oocysts contain 4 sporocysts each with 2 sporozoites