The Harm and Prevention Techniques of Organic Breeding Goose "Egg Plague" Disease

Organic breeding goose “egg plague” is also called infectious yolk peritonitis, and in some regions it is also called goose Escherichia coli reproductive organ disease. Its characteristics are: it specifically attacks female and male geese during the laying period, usually starting at the early or middle stage of laying and stopping when laying ends, and sick geese also lose their breeding value after recovery. Below is an introduction to the harm and prevention techniques of organic breeding goose “egg plague” disease:

Consequences: Organic breeding geese lose mating ability. Sick female geese mainly show depression, reduced or absent appetite, staying alone or floating on the water surface, abdominal enlargement, laying soft-shelled or deformed eggs, and a straight-line decline in laying rate. Around the anus there is moist, foul-smelling excrement, resembling egg flower soup, and the excrement is mixed with egg white and yolk; the coagulated protein or yolk blocks mostly look like boiled egg soup. Sick geese have difficulty walking, but their body temperature is normal, though sick geese show elevated body temperature. At the same time, sick geese also show sunken eyes and dehydration, dry and cyanotic beak and webbed feet, and ruffled feathers. The main symptoms in affected male geese are severe congestion of the penis, swelling 2 to 3 times larger, the spiral seminal groove difficult to see clearly, and yellow purulent or caseous nodules ranging from sesame to soybean size at different locations; in some cases the penis is exposed outside the body and cannot retract. After removing the scabs, there is a bleeding ulcer surface, and they lose mating ability, but death is rarely observed. Treatment: Timely disinfection and vaccination. If the goose flock is infected with “egg plague” disease, what should farmers do? It is recommended to isolate and raise all sick geese and suspected sick geese. “Through the above prevention and control measures, the condition was gradually brought under control; apart from deaths among the severely ill, the others basically recovered.” In addition, goose houses should be disinfected, the produced feces should be piled and fermented, and all dead geese should be subjected to harmless treatment. “Injecting goose egg plague aluminum hydroxide inactivated vaccine 15 days before breeding geese lay eggs can effectively prevent the occurrence of this disease. For flocks that have already developed the disease, emergency vaccination should be carried out; 7 days after injection of this vaccine, the epidemic can be effectively controlled.” Management: Improve the goose house environment and raise the quality of the goose flock. At present, due to the lack of large-scale goose-raising technology, coupled with insufficient research and experience in goose disease prevention and control, there are commonly phenomena such as simple and crude goose houses, high rearing density, poor ventilation, damp goose houses, emphasis on raising but not management, emphasis on treatment but not prevention, and lax disinfection measures, causing the occurrence and spread of this disease. “Choosing a good site is the key to raising breeding geese well.” An organic breeding goose farm should choose a place that is sheltered from the wind and faces the sun, close to rivers or reservoirs, and with abundant water plants. The water surface should have a certain width and depth; preferably it should be flowing river water. If the water surface cannot flow, its depth should be more than 1.5 m, and polluted water must be prevented from flowing in. If no suitable natural water surface can be found, a pond can be built artificially. Generally, the pond is 3 m wide and 0.6 m deep, and the length can be flexibly determined according to the site conditions. It is recommended that the pond not be built underground; the bottom of the pond should be higher than the ground level, with water outlets left on both sides, able to fill and drain. After emptying, it is convenient for disinfection, always keeping the water clean and unpolluted. From the results of epidemiological investigations, this disease mainly occurs during the laying period, that is, it occurs from sexual maturity when mating begins, indicating that the route of infection of this disease is mainly through mating. Therefore, half a month before the geese lay eggs, while injecting the egg plague vaccine, the reproductive organs of male geese should be checked, and any with red, swollen penis or scabs should be culled immediately. Female geese with moist surroundings of the anus and sticky feces should also be culled. Farmers should improve the quality of the goose flock, eliminate all potential factors causing this disease in the bud, and ensure that organic breeding geese produce healthy, sterile, high-quality breeding eggs. It is hoped that the above introduction to the harm and prevention techniques of organic breeding goose “egg plague” disease can be helpful to everyone.