Home › Animalia › Animal health › Animal diseases › Coccidiosis
Coccidiosis
Coccidiosis is a common intestinal parasitic disease affecting rabbits, chickens, sheep and goats, caused by tiny microscopic parasites called coccidia. It mainly affects young animals and can cause significant diarrhea impacting growth. Th...
What is it?
Coccidiosis is a common intestinal parasitic disease affecting rabbits, chickens, sheep and goats, caused by tiny microscopic parasites called coccidia. It mainly affects young animals and can cause significant diarrhea impacting growth. This disease is well known in Tunisia in poultry farms and small ruminant breeding operations.
The disease is caused by protozoa of the genus Eimeria, single-celled parasites that invade the intestinal wall. Each animal species is generally infected by specific coccidia species. These parasites multiply rapidly in the intestine, damaging digestive tissues.
Young age, overcrowding, insufficient hygiene and stress related to weaning or transport increase the risk of developing the disease. Damp bedding, hot and humid weather conditions, and a weakened immune system also favor its onset. Sudden dietary changes can also play a role.
Commonly observed signs
These signs are neither exhaustive nor specific. Only a veterinarian can establish a diagnosis.
Signs include diarrhea sometimes with blood, lethargy, loss of appetite and progressive weight loss. Young animals may show dull coat or feathers, dehydration and growth delay. In severe cases, death can occur quickly, especially in the most fragile individuals.
When to consult without delay
This list does not replace veterinary advice. It gathers situations that justify a prompt consultation.
Transmission
Transmission occurs orally, when the animal ingests oocysts present in an environment soiled by contaminated feces. Damp bedding and dirty feeders and waterers promote spread between animals. Young animals in group housing, such as in intensive farms, are particularly exposed.
Diagnosis and care
Diagnosis is the veterinarian's responsibility, based on clinical examination and laboratory tests. Care is decided case by case.
If you observe signs suggesting coccidiosis in your animals, it is important to quickly consult a veterinarian who can confirm the diagnosis and propose appropriate care. Never attempt to administer treatment without professional advice. Early intervention improves the chances of recovery, especially in young animals.
Prevention
Good farm hygiene, with regular cleaning of bedding, feeders and waterers, greatly reduces the risk of coccidiosis. Avoiding overcrowding and ensuring good ventilation also help limit parasite spread. Regular veterinary follow-up allows preventive measures to be adapted to the type of farm.
References
Content reviewed by the TunisieVet editorial team · Updated 08 August 2026
AT A GLANCE
Need a veterinarian?
Find a practitioner near you on TunisieVet, with their specialities, hours and contact details.
Find a veterinarianAffected species
This information is provided for educational purposes only and is not a substitute for a veterinary consultation. If you have any concerns about your animal's health, consult a veterinarian.
To discover
Related diseases and linked Animalia content.
Ringworm (dermatophytosis)
Fungal
Sarcoptic mange
Parasitic
Myxomatosis
Viral · Vaccine available
Rabbit hemorrhagic disease
Viral · Vaccine available