Drinking water immunity has the following operational points and precautions:

(1) Do not use any disinfectant drugs within 24 hours before and after drinking water.

(2) In order to drink the water containing the vaccine within 1 hour to 2 hours, depending on the season and temperature, the water should be stopped for 2 hours to 4 hours before immunization. In summer, it is best to stop water at night and to drink water in the morning.

(3) It is best to use cold boiled water or distilled water to dilute the vaccine. It is not advisable to use water containing bleaching powder. Because the chlorine in the bleaching powder will affect the immune effect in the vaccine, the water with high salinity content should be boiled, cooled and precipitated. After application.

(4) It is not advisable to use metal water dispensers in poultry cage equipment. Plastic or ceramic drinking fountains can be used. They should be thoroughly cleaned before use. Do not have residual soap or disinfectant. The number of drinking fountains must be sufficient to allow each chicken to be in a short time. Drink enough aqueous solution of the vaccine; drink water containing vaccine should avoid direct sunlight.

(5) The amount of water used for dilution of the vaccine is longer in the summer or before the immunization, and the amount of drinking water can be appropriately increased.