Coccidiosis Caecal E. tenella Infe ...

Coccidiosis Caecal E. tenella Infection in Laying Hens

Eimeria tenella is the best known poultry coccidia, because of the recognizable lesions and often spectacular losses it causes in commercial broilers or layer pullets

Eimeria tenella is the only species which causes caecal coccidiosis, one of the most easily recognized form of coccidiosis. Infection can be acute and spread rapidly, resulting in mortality in a susceptible flock or coccidiosis control program failure for replacement birds. Eimeria tenella causes bloody droppings and onset of mortality in a flock.

Causing Agents
Protozoal infection by Eimeria tenella
Affected Systems/Organs
Digestive Track.Caeca
Mainly Affects
Mortality Performance
Adequate coccidiosis control program for replacement pullets. Coccidial drugs. Vaccines.
Suggested Actions
  • Can be confirmed with clinical signs and gross lesions
  • Technical assistance recommended
  • Can be managed with feed additives, off-the-shelf medications
  • Diagnosis should be confirmed with rapid assays and/or a certified laboratory
  • Veterinary intervention is recommended

Impact on Egg quality


Impact on Liveability


Impact on Production


Overall Economic Impact


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Steven Leeson, John D. Summers. 2008. Commercial Poultry Nutrition. Third Edition.

Donald D. Bell, Williams D. Weaver. 2009.  Commercial Chicken Meat and Egg Production. Fifth Edition.

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