1st immunization: 5 to 10 days of age, use 100 pairs of Newcastle disease II strains of chickens against 100 ml of cold water or physiological saline, dissolve and shake, and mix minced rice or corn flour or chicken granules with 150 grams. Feed them once in the morning. It is immune to 70-100 feathers.

2nd immunization: 25 to 30 days of age, use 100 ml of Newcastle disease II strains for 150 ml of cold boiled water, dissolve and shake well, mix well with 200 g of feed, and feed once in the morning to immunize 50-70 pigeons. .

The third immunization: 60 to 90 days of age, using 100 pairs of Newcastle Disease I strains, 250 to 300 ml of cold boiled water, dissolve and mix well, stir in 350 to 400 grams of feed, and feed once in the morning to be immunized. ~ 70 feathers.

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