摘要
70日龄鸡在发生马立克氏病初期,紧急接种CVI988疫苗,收到较好效果。死亡率、高峰产蛋率、马立克氏病病死率均极显著(P<0.01)优于未接种疫苗的鸡群。
In early period of Marek's disease, 70-days old chickens were raccinatedCV1988 immediately for second immune. Mortality rate and death rate from Marek's diseaseof chickens with second immune were significantly lower (P<0. 01) than that of chickenswithout second immune, peak laying rate of chicken with second immune was significantlyhigher (P<0. 01) than that of chickens without second immune.
