Egg production suddenly drops during peak periods and eggshells are not smooth. The feed was still the original feed. No abnormalities were found in the excrement and breathing. There was no change in feeding and management. May I ask an expert if the chicken is ill?
According to what you said, your egg breeder may have chicken egg drop syndrome. This disease is a viral infection. Its main features are a sudden drop in egg production, abnormal eggshells, malformed eggs, and poor egg quality. This virus has different susceptibility to chickens of different strains, but chickens of all strains from 26 to 35 weeks old can infect, especially the breeder chickens and breeding hens producing brown shell eggs, which are most susceptible to white shell production. Egg hens have a lower prevalence. It is usually 26 to 36 weeks old laying hens have a sudden decline in group production, egg production rate than the normal decline of 20% to 30%, or even 50%. At the same time, soft shelled eggs, thin-shelled eggs, shellless eggs, and small eggs are produced. Eggs are deformed. The surface of the eggshell is rough, such as white ash and ash-yellow powder. The color of the brown shell egg disappears, and the color becomes lighter. In this case, the egg yellow is light, or the protein is mixed with blood and foreign matter. Abnormal eggs can account for 15% or more of the egg production and the egg breakage rate increases. The necropsy often lacks obvious pathological changes. The characteristic lesions are inflammation, edema, and atrophy of the mucosa of each segment of the fallopian tube. The diseased chicken's ovarian atrophy becomes smaller, or there is bleeding, inflammation of the uterine mucosa, and catarrhal inflammation in the intestine. The initial inoculation of egg-inflammation syndrome oil inactivated vaccine 4 to 10 weeks before the start of production, and the second inoculation 3 to 4 weeks before birth, is the main prevention and control measures to prevent this disease. At present, there is no effective disease. treatment method.
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