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Egg egg duck egg production anomaly treatment
E. coli, Proteus, Salmonella, Influenza virus, and Herpes virus are common pathogens associated with this disease.
This condition can occur throughout the year, but it tends to be more prevalent during cold seasons such as winter and spring, as well as in wet and humid weather conditions.
Clinically, affected ducks—especially laying hens—exhibit a reduced appetite, or even complete loss of appetite. Egg production becomes abnormal, with eggs appearing soft-shelled, thick-shelled, thin-shelled, shellless, or misshapen. There may also be a failure to reach the usual peak egg production or a sudden drop in egg output.
Necropsy findings typically include the following:
1. **Respiratory system**: Congestion or hemorrhage in the throat, trachea, bronchi, and lungs. Some cases show yellow or white necrotic nodules in the lung tissue.
2. **Inflammatory lesions**: Pericarditis, airsacculitis, peritonitis, and yolk sac inflammation may be observed, with dark red or blackish peritoneal fluid.
3. **Reproductive system**: Congestion or hemorrhage of the yolk membrane, follicle rupture, and edema of the oviduct mucosa. The posterior part of the oviduct may appear thickened or rough, with excessive mucus or a white, curd-like substance. In some cases, eggs may still be present in the fallopian tube.
For diagnosis, clinical signs such as a sharp decline in egg production or abnormal egg characteristics can provide initial clues. Laboratory testing is essential to identify the specific pathogen involved. It's also important to differentiate this condition from other issues like feed-related problems or nutritional deficiencies, which can cause similar symptoms. A combination of feed analysis and pathogen testing helps ensure an accurate diagnosis.
Control measures should focus on prevention and timely intervention. Prevention involves avoiding the introduction of birds from infected areas, maintaining good hygiene, keeping the environment dry, using high-quality feed, and regular disinfection. Vaccination is crucial, especially when sick or dead ducks show unusual egg production. Prompt testing and targeted vaccination can significantly reduce the impact of the disease.
Once symptoms are detected, early diagnosis and treatment are critical. Immediate action can help prevent further spread and minimize economic losses.
Prevention programs often include combinations such as Gold Fluoride + Antivirus 1 + Zengmianbao, or Plasma Sausage + Gao Li Bao + Increase Free Treasure. These treatments are commonly used in practice to support the immune system and improve overall flock health.