First, observe carefully. The sick ducks are unwilling to move, slaughter late, get into the water slowly, and stand still. Individual tears, swollen eyes on one or both sides, a long time to become blind. There is undigested feed slag in the faeces and the egg production drops.
Second, the clever diagnosis. 1 Aseptically take liver, spleen, and Gram stain to eliminate bacterial infection. 2 Aseptically take thymus, lymph and spleen, add 5 times normal saline and 2,000 units of streptomycin, and then freeze in the freezer, and take the supernatant 0.1 ml to inoculate 9 to 10 days of chicken embryos for pathogen isolation and identification.
Third, early prevention. 1 Do a good job of vaccination before starting production. 2 do a good job of disinfection, disinfection can be used to kill 100 disinfection liquid. 3 Keep warm and cold. Cover plastic sheds at the event venues to increase the temperature of the event venues and properly arrange the pool area and stocking density.
Fourth, re-treatment. The individual ducks were found to have cold symptoms and were immediately given medication. The treatment method is: 1 per kilogram of material was added 0.6 grams of virus tablets, 1 gram of vitamin B powder, and fed for 5 days. 2 Each 50 kilograms of material plus Chinese herbal medicine Yanjingqing 1 bag, even feed 4 days, while drinking water, add Ribavirin, 2 times a day, even drink 4 days.
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