Eimeria and Isospora Flashcards
What two genera of Coccidia cause enteric coccidiosis?
Eimeria and Isospora
Species affected by Eimeria
poultry and ruminants
Species affected by Isospora
swine, cats, dogs
Are coccidia species host-specific?
yes
of Sporocysts and Sporozoites in Eimeria
4 sporocysts with 2 sporozoites each
of Sporocysts and Sporozoites in Isospora
2 sporocysts with 4 sporozoites each
Transmission of Eimeria/Isospora?
fecal-oral
What stage of the coccidia is shed in the environment?
oocysts
Diagnosis of Eimeria and Isospora
fecal float (but clinical signs appear before eggs are shed), also intestinal lesions
2 Eimeria Species in poultry
- Eimeria acervulina
- Eimeria tenella
Which is more common - Eimeria acervulina
or Eimeria tenella?
Eimeria acervulina
Which is more pathogenic - Eimeria acervulina
or Eimeria tenella?
Eimeria tenella
Clinical Signs of Chicken Coccidiosis
bloody droppings, emaciation, pallor, inappetence, acute death; intestinal lesions
Control and Tx of Chicken Coccidiosis
isolate sick birds (they gon die), treat the healthy birds with anti-coccidials
What three species of Eimeria are pathogenic in turkeys?
- Eimeria adenoeides
- Eimeria gallopavonis
- Eimeria meleagrimittis
Age of Bovine Coccidiosis? Why?
2-6 months
up to 3 weeks, still have protection from colostrum
What two species of Eimeria are most pathogenic in bovine?
- Eimeria zuernii
- Eimeria bovis
Common preventative med for Eimeria?
ionophores
Eimeria stiedai
infect the bile duct epithelium in rabbits, therefore diarrhea is secondary
Isospora suis
swine coccidiosis
Age of swine coccidiosis?
suckling piglets (7-14 days old)
Clinical signs of Isospora suis?
severe yellow-gray pasty diarrhea with a sour milk smell, depressed weight gains
Can you treat swine coccidiosis?
anti-coccidials are not effective - best solution is to eliminate crowding and improve sanitation
Isospora canis
largest oocysts of the isosporas which infect canines; causes diarrhea d/t [weaning] stress
