Poultry coccidiosis is a protozoal disease primarily caused by parasites of the genus Eimeria, which infects the intestinal tract of birds, particularly chickens. This condition is characterized by severe diarrhea, weight loss, and decreased production in affected flocks. In some cases, coccidiosis can be fatal if not managed properly.
Poultry coccidiosis is caused by protozoa from the phylum Apicomplexa, specifically the Eimeriidae family. The most common species affecting poultry belong to the genus Eimeria, which infect different parts of the intestinal tract The disease spreads when birds ingest sporulated oocysts, which are shed in the feces of infected birds and contaminate feed, water, litter, and soil. Oocysts can also be transmitted via equipment, clothing, insects and rodents. Fresh oocysts are not immediately infectious they require 1–2 days under optimal conditions (21°–32°C with adequate moisture and oxygen) to sporulate and become infective.
Young poultry, especially chicks between 3 to 6 weeks of age are most susceptible to coccidiosis. The worst cases tend to occur around 4 to 5 weeks. This disease can spread rapidly, particularly in crowded conditions where the pathogen thrives.
CLINICAL SIGNS
Poultry coccidiosis presents with several clinical signs, including: Bloody diarrhea or mucous-filled droppings, lethargy and weakness (infected birds often appear listless), loss of appetite and weight loss, pale combs and wattles(indicating anemia), ruffled feathers and a hunched posture, decreased egg production in laying hens and sudden death in severe cases.
DIAGNOSIS
Diagnosing poultry coccidiosis typically involves: Fecal flotation test to detect oocysts (coccidia eggs) in droppings, post-mortem examination, where lesions in the intestines and ceca indicate infection, microscopic analysis of intestinal tissue to identify Eimeria species, complete blood count (CBC), which may show anemia and low protein levels in affected birds.
TREATMENTS
Asampro 20%; Is the best anti coccidial drug that is composed of Amprolium 20%, it can effectively treat caecal and intestinal coccidiosis in poultry.
Astrisul; Is the strong antibiotic that is composed of a potentiated Sulphadiazine which is effective against coccidiosis that cause bloody diarrhea.
CONTROL
Antibiotics: Secondary bacterial infections can occur due to intestinal damage, so antibiotics like Ashtyl powder may be prescribed.
Supportive care: Ensuring birds stay hydrated and comfortable is crucial for recovery. Environmental management: Regularly cleaning and disinfecting the coop, keeping bedding dry and improving ventilation help reduce the spread of coccidian.
Vaccination: Some poultry farms use live vaccines to build immunity against coccidiosis.
CONCLUSION
Poultry are the primary source of animal protein, contributing significantly towards meat and egg production. The demand for this type of protein rises rapidly all over the world. Each of the seven Eimeria species inhabits different sites of the gastrointestinal tract and causes poultry diseases ranging from subclinical enteritis to subacute mortality. The severity of coccidiosis depends on Eimeria species, strain, infectious dose, host genetic makeup, flock density, environmental and stress conditions, and concomitant infections.