黄羽、栗羽及其杂种鹌鹑对新城疫病毒的易感性试验

Susceptibility of the Yellow, Maroon-feather Quails and Their Hybrids to New Castle Disease Virus

用鸡新城疫强毒F48E9分别对3,5,10,15,20,30,40,50和70日龄的未免疫鹌鹑进行攻毒。结果表明:3日龄发病率较低,为10%～20%,5日龄发病率达20%～30%,且发病者全部死亡,10～40日龄所有供试鹌鹑均可感染发病,50日龄以后发病率有所下降;30日龄以后有一定的耐过只数。所有感染鹌鹑均出现和自然发病同样的症状和死亡情况。从病死鹌鹑中可重新收回到新城疫病毒,发病耐过鹌鹑可产生特异性抗体。经统计检验,黄羽、栗羽及其杂种对新城疫病毒的易感性无显著性差异。

The unimmunological yellow-maroon-feather quails and their hybrids respectively at the age of 3, 5, 10, 15, 20, 30, 40, 50, 70 days were inoculated with new castle disease virus （F48Eg）. The results showed that the incidences and mortality rates of all quails of any ages but 3day age were high, and the morbidity of 5day-age quails reached to 20% to 30%, moreover, all of the infected were died. All the tested quails at 10 to 40 days of age could infect, the.morbidity of quails over 50days declined A few of quails over 30 days of age could survive from the disease. The infected quails appeared the same symptoms as that of naturally infected ones. NDV can be isolated from the dead and the recovered ones can produce the antibody.