Diagnosis and treatment of white dysentery of newborn partridges in breeding partridges

Diagnosis and prevention

According to the characteristics of a large number of young partridges, such as disease, death, gray, malodorous dysentery and so on, a preliminary diagnosis can be made. After isolation and identification of bacteria in the laboratory, partridge white dysentery was diagnosed. Immediately block the partridge farm, isolate 63 severe partridges from 584 mild and disease-free partridges, clean the partridge house, strengthen ventilation, adjust the breeding density, and disinfect the partridge house with 1: 300 100 poison with partridge spray, once a day for 3 days. The whole group was immediately mixed with 0.05% norfloxacin and 0.02% ciprofloxacin for drinking water. For 5 days, 63 critically ill partridges were injected with 2ml:0.5g (500000 units) kanamycin sulfate intramuscularly, 0.1ml/, twice a day for 3 days; clean up contaminated feathers, feces and disinfect them with 2%NaOH every day; dead partridges were soaked in 2%NaOH for half an hour and buried deeply. In the morning after taking the above measures, 5 mild partridges died, the rest of them got better, and their food intake increased; 22 severe partridges died, and the rest of them were getting better, and some of them were looking for food. On the third day, 4 severe partridges died, and the rest of the partridges had a normal mental appetite. On the return visit half a month later, the partridges fully recovered and grew normally.

Summary and discussion

The main results are as follows: 1. Partridge white dysentery mainly affects young partridges, and its transmission route can be transmitted not only through eggs, but also through digestive tract and respiratory tract, and transmission through infected eggs is the most common. General intra-egg infection, the emergence of dead embryos or weak embryos that can not get out of the shell, and there are also those who quickly died of sepsis and no symptoms before coming out of the shell. This case died at 2 days old, and the peak of death occurred on the 4th day (598 deaths) and 5th day (605 deaths) of infection, and there were typical symptoms and lesions, such as gray, malodorous dysentery, casein in the cecum, dilatation of ureter filled with uric acid salt, etc., indicating that this case was infected during incubation or after hatching. In addition, through on-the-spot observation, there are some bad inducements in the field, such as poor sanitary conditions, damp barn, poor ventilation, excessive feeding density and so on. Therefore, it led to an outbreak of partridge white dysentery.

2. After the partridge fell ill, positive treatment measures were taken in the field, that is, 0.02% oxytetracycline was used for internal administration. However, due to the small dose of oxytetracycline, the drug could not reach the effective concentration after entering the partridge, so it could not inhibit the growth and reproduction of Salmonella pullorum, resulting in ineffective treatment. For the treatment of partridge white dysentery, the dosage of oxytetracycline should be: 0.04% murine 0.08%, drinking water 0.02% Mel 0.04%. If the dose is not enough, the treatment will not be achieved. Partridge farms (households) should pay enough attention to this.

3. The principle of prevention and control of partridge white dysentery is to put an end to the introduction of pathogens, to eliminate carriers and chronic patients in partridges, and to strictly implement the system of hygiene, disinfection and isolation. The measures are to purify the partridge field, to establish a group of partridges without salmonellosis, to regularly use plate agglutination test and quarantine in healthy partridges, to eliminate positive partridges and suspicious partridges in time, and to strengthen breeding management and environmental hygiene. strengthen the cleaning and disinfection of eggs, hatchery, cages, appliances, etc.; buy partridges should be isolated, quarantine, confirm health.