Drinking water immunization is suitable for large groups of immunization of broilers, which has the advantages of labor saving and low stress. 1. It is necessary to pay attention to the vaccines produced by the state-approved regular manufacturers and must be used in accordance with the vaccine use method. Vaccines that are suitable for broiler immunization include attenuated vaccines such as Newcastle disease IV and cloned attenuated vaccines, and infectious bursal disease (IBD) attenuated lyophilized vaccines, which are commonly used to prevent Newcastle disease and Infectious Bursal Disease. 2. Diluted vaccines should be ready for use. The vaccine water should not be exposed to direct sunlight. Calculate the amount of chicken drinking water correctly. For 7-10 day-old chicks, each drinking water was approximately 5 ml, and for 14-day old chicks approximately 10 ml, each 21-day-old broiler had approximately 15 ml of water per bird. Before using the vaccine, it is best to stop water for 2-4 hours in the summer and 2-4 hours in the winter. The amount of drinking water is 40% of the drinking water throughout the day, and the chickens should drink the vaccine within half an hour. 3, do not use tap water containing chloride ions, so as not to affect the quality of the vaccine. Diluted vaccine is best to use distilled water or cold water, can also be used to clean deep well water; In addition, when diluting the vaccine, first add 0.5% -2% skimmed milk powder or a considerable amount of skim milk in the water, can also be used vaccine protection agent Etc. to prevent the harmful effects of water on the vaccine. 4, must be equipped with drinking fountains, and rinse with water, can not remain disinfectant or detergent. Drinking fountains are best made of plastic or enamel products, and the use of metal products containing more rust is strictly prohibited. 5. When drinking water is immunized, the dose of the vaccine should be 2-3 times larger than that of intramuscular injection or intranasal eyedrops, but it should be properly controlled according to the type of vaccine and the number of drinking times. 6. Within 24 to 48 hours before and after the vaccine is consumed, chickens must not drink water containing potassium permanganate or other disinfectants, and disinfection with chickens should not be carried out so as not to affect the immune effect. Bean Products,The Bean,Canned Broad Beans,Beans Fava ZHONGSHAN G.H.L. TRADING CO., LTD. , https://www.ghltrade.com