Incidence
In early July this year, a 14-day-old duck in a duck farm in Boluo County, Huizhou City, Guangdong Province, suffered from infectious serositis due to its high density and lack of air circulation. Within 3 days of infection, the infection rate reached 80%, and the mortality rate was about 35%, resulting in greater economic losses.
Clinical features
It was observed that the diseased duck was initially depressed in spirit, drowsiness and drowsiness, loss of appetite, tears and runny nose, mild coughing and sneezing, yellowish or pale green diarrhea, swelling of some orbital sinuses, conjunctival hyperemia. Feet or feet joints or toes joints are swollen, touched with a sense of volatility, do not want to walk or action can not keep up with the group, with the development of neurological symptoms: head and neck tremors, ataxia, opisthotonus, twitching coma to dead.
Anatomical lesions
Examination of 10 ducklings that had just died showed that there were visible fibrinous pericarditis, turbid cysts, pale yellow fibrin exudates, epicardial edema, and pale yellow exudates; liver surface With a layer of white cellulose exudate, easy to peel, hepatosplenomegaly; balloon thickening and turbidity; open joint swelling found joint fluid increased milky white thick; cerebrospinal fluid increased, and some showed cellulose meningitis.
diagnosis
According to the clinical symptoms and necropsy lesions can be initially diagnosed, the batch of ducklings infected with infectious serositis, for the identification of other similar diseases, we must further do bacteriological examination: aseptically take sick duck liver tissue smears The flame was fixed and stained with a specific fluorescent antibody. Examination under a fluorescence microscope revealed that most of the yellow-green ring structures were those of duck infectious serositis, R. anatipestifer, and other bacteria were not stained. Have been identified.
Treatment and results
Duck contagious serositis, also known as Riemerella anatipestifer disease, is a chronic or acute septic communicable disease that affects ducks, geese, turkeys, and other birds. The disease spreads quickly and has a high mortality rate. We must pay close attention to treatment time. After confirming that it is duck contagious serositis, first reduce the ducklings' breeding density, change the litter excrement, increase ventilation, keep the duck house clean and dry, and use sensitive drugs for treatment. This time, the magical (Qingjie Mixture) 100ml produced by Hengfengqiang Animal Pharmaceutical Co., Ltd. was mixed with amoxicillin 10g to 100kg of water. The diseased ducklings were allowed to drink freely and they could drink for 3 days while adding in drinking water. Amount of electrolysis multidimensional to improve the disease resistance of diseased ducks and promote recovery. After the third day of treatment, the treatment effect was good. The patient's mental state improved, the appetite returned to normal, and no duckling died.
In addition, pay attention to the hygienic condition of the duck house and provide high-quality full-priced feed and clean drinking water. In order to reduce the recurrence of the disease, the batch of ducklings were all in and out, and the duck houses were regularly sterilized. The conditional duck farm can be used as a duck infective serotonitis in its own seedlings, or a subcutaneous injection of inactivated strains of R. anatipestifer in a young duckling at 1 week of age can produce protection after 1 week.
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Mixed Colorants
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