最近,浙江一养鸡户介绍一种能使鸡终生不患鸡瘟的新方法,即当种蛋孵化到8—10日时,用一根极细的注射针在蛋的尖顶部戳一个小孔,将稀释1000倍的新城疫Ⅰ系疫苗0.1ml(约两小滴)缓缓注入蛋内,不碰蛋内鸡体,注射后用胶布封住针口,继续让其孵化。这样,孵化 Recently, a chicken farmer in Zhejiang introduced a new method that can make chickens free from chicken plague for a long time. When the egg hatched from 8th to 10th, a tiny needle was used to mark a small hole in the top of the egg, 0.1 ml (about two drops) of Newcastle disease strain I vaccine diluted 1000-fold is slowly injected into the egg without touching the chicken body. After injection, the needles are sealed with adhesive tape to continue hatching. In this way, hatch