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Clinical Symptoms The disease occurs frequently in chickens at the peak of egg production. The incidence of chickens after peak egg production is low. The main clinical manifestations are: Early onset chickens have mild respiratory symptoms, and individual chickens are green or yellow-green, yellow-white. Dilute feces, birds, mental status and feed intake are normal. As the disease progresses, there is a continuous decrease in feed intake and mental euphemism. The egg production first shows a slight deterioration of the egg shell, the eggshell color becomes lighter, and soft shell eggs and misshapen eggs appear. As the disease progresses, the egg production rate begins to decline slowly or rapidly, and the egg production rate can be within 3 days to 5 days. Declined by 10% to 30%, or even more, part of the chicken around the anus fecal contamination, and the emergence of purple crown, sputum and sporadic death. After the disease, the egg production rate of the chickens recovered slowly.
Preventive measures After the chickens are put into production, every other month, use clear toads to disperse and mix spices, kidney Ganshu drinking water, and use them for 3 days. In particular, enter the winter season with high incidence of viral diseases.
The treatment plan controls the principle of influenza control: anti-virus, anti-inflammatory, and prevention of secondary infection. Medication program: Jinfu Tamiflu drinking water, Jinju Shuan spices, used for 4 days, for secondary E. coli chickens, when treated with Bacterial Wei water.
Improve the egg production rate of treatment principles: eliminate inflammation, Shugan Jianpi, warm house blood, beneficial egg, promote follicle, fallopian tube development.
Medication program: the tube through drinking water, cod liver oil Vitamin E mix for 5 days, and then use Liver and egg whitening mix for 10 days to 15 days.
Special reminder: When it is found that there are respiratory symptoms, fecal abnormalities, and egg quality decline in the flock, promptly take the appropriate drug so as not to miss the best opportunity for treatment.
During the use of the above treatment programs for severely ill chickens, individual chickens may experience a decrease in feed intake and egg production, but adherence to medication for 4 days to 6 days can be effectively controlled.
The occurrence of this disease is closely related to the feeding and management of chickens and the establishment of a good preventive health care program. The other is to do a good job of environmental disinfection.
Autumn and winter chicken flu can cause egg production to decline
In autumn and winter, as the weather turns colder, the temperature drops, and the number of diseases increases. Especially, the drop in egg production of laying hens is more common, causing large economic losses to farmers. According to the author's survey in recent years, it has been found that influenza in autumn and winter is the culprit in the decline of chicken eggs.