Coccidiosis in Poultry: Testing and Symptoms

Written by Assurecloud - AssureCloud Team
19 Sep 2025

Coccidiosis in poultry is a common yet costly disease caused by protozoan parasites of the Eimeria genus. It affects the intestinal lining of chickens, leading to poor nutrient absorption, impaired growth, and even death in severe cases.

Early identification and accurate diagnosis are essential for managing outbreaks and maintaining productivity.

Coccidiosis in Poultry: Impact on Production and Performance

Coccidiosis disrupts the intestinal health of poultry, which directly affects feed conversion, weight gain, and overall performance. In broiler operations, even mild cases can reduce profit margins due to increased feed costs and lower final weights.

More serious outbreaks of coccidiosis in poultry can lead to:

  • Increased mortality
  • Higher veterinary costs
  • Delayed time to market
  • Secondary infections due to weakened immunity

Coccidiosis is especially common in warm, humid environments or in overcrowded housing conditions where oocysts (the infectious stage) can multiply rapidly.

Coccidiosis in Chickens: What Poultry Producers Need to Know

All poultry producers – whether small-scale or commercial – should understand how coccidiosis in chickens spreads. It is transmitted through contaminated litter, water, and equipment, and can quickly infect entire flocks if not contained.

There are several Eimeria species that affect different parts of the digestive tract. Because clinical signs and lesions can vary, lab testing is necessary to determine the specific species involved, which can impact treatment options.

Routine monitoring and biosecurity practices can significantly reduce the risk of widespread outbreaks.

How Lab Results Support Coccidiosis Management Decisions

Accurate diagnosis through poultry diagnostic testing for coccidiosis helps confirm infection and guides targeted interventions.

Lab testing typically includes:

  • Microscopic examination of faecal samples to detect oocysts
  • Oocyst counting (OPG tests) to assess the severity of infection

Test results help vets and producers determine whether to treat, cull, or monitor flocks – and how to rotate medications to avoid resistance.

Need Support with Coccidiosis Testing and Confirmation?

At AssureCloud, our veterinary diagnostics team supports poultry farmers with fast, reliable, and accurate coccidiosis in poultry testing.

Contact us to learn more or book your test today.
Accurate testing means stronger flocks and better outcomes – trust our team for expert diagnostics.

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