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Egg Drop Syndrome 76 in a U.S. Broiler Breeder Flock.
Sabrina Hurst-Proctor1, R M Fulton2, T Gaydos3
1Gaydos Technical Services, LLC, Dallas, TX 75215, shurst@gaydosts.com.
Avian Diseases
|October 14, 2024
Summary
Egg drop syndrome (EDS
Area of Science:
- Avian Medicine
- Poultry Virology
Background:
- Egg drop syndrome (EDS'76) is a significant concern in poultry production.
- Previous outbreaks have primarily affected table egg layers.
Purpose of the Study:
- To report a case of EDS'76 in a broiler breeder flock.
- To document the clinical signs, diagnostic methods, and recovery pattern.
Main Methods:
- Diagnosis confirmed using Polymerase Chain Reaction (PCR) on shell-less eggs and Hemagglutination Inhibition (HI) testing on serum.
- Clinical signs, egg production, and mortality were monitored.
- Differential diagnoses were ruled out through appropriate sample submission.
Main Results:
- A broiler breeder flock experienced a significant egg production drop with shell-less, wrinkled, and pale eggs.
- EDS'76 was confirmed via PCR and HI testing.
- Production returned to near-normal levels within 4 weeks, with continued impact on hatching egg quality for an additional 2 weeks.
Conclusions:
- EDS'76 can affect broiler breeder flocks, causing distinct production and egg quality issues.
- Suspected role of early-life immunosuppression in flock susceptibility.
- Effective diagnostic methods confirmed the disease and guided recovery monitoring.
