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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| − | + | [[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]] | ||
| + | *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 | ||
| + | |||
| + | [[Category:Coccidia]][[Category:Poultry]] | ||
Revision as of 21:43, 8 April 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