Difference between revisions of "Coccidia - Poultry"

From WikiVet English
Jump to navigation Jump to search
(Redirected page to Coccidiosis - Poultry)
(4 intermediate revisions by 2 users not shown)
Line 1: Line 1:
#redirect[[Coccidiosis - 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]]
 +
 
 +
Domestic poultry and birds are affected by coccidia called Eimeria. Different species of Eimeria that effect poultry are host-specific – meaning that a species that infects chickens does not infect turkeys and vice versa.
 +
 
 +
Nine species of Eimeria infect chickens. The species important in broiler production include Eimeria tenella (90%), E. maxima, E. acervulina, and E. mivati; the species important in breeder and egg- layers are E. burnetti and E. necatrix. Seven species infect turkeys – the big three of concern are Eimeria meleagrimitis, E. adenoeides, and E. gallapovonis.
 +
 
 +
*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
 +
 
 +
[[Coccidiosis - Poultry]]
 +
 
 +
==Test yourself with the Coccidia Flashcards==
 +
 
 +
[[Coccidia_Flashcards|Coccidia Flashcards]]
 +
 
 +
[[Category:Coccidia]][[Category:Poultry]]
 +
[[Category:To_Do_-_Clinical]][[Category:To Do - Parasites]]

Revision as of 23:54, 7 November 2010

Buff orpington - nabrown RVC
Sporulated Eimeria - Joaquim Castellà Veterinary Parasitology Universitat Autònoma de Barcelona

Domestic poultry and birds are affected by coccidia called Eimeria. Different species of Eimeria that effect poultry are host-specific – meaning that a species that infects chickens does not infect turkeys and vice versa.

Nine species of Eimeria infect chickens. The species important in broiler production include Eimeria tenella (90%), E. maxima, E. acervulina, and E. mivati; the species important in breeder and egg- layers are E. burnetti and E. necatrix. Seven species infect turkeys – the big three of concern are Eimeria meleagrimitis, E. adenoeides, and E. gallapovonis.

  • 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

Coccidiosis - Poultry

Test yourself with the Coccidia Flashcards

Coccidia Flashcards