摘要
用研制的新城疫－肾型传染性支气管炎（肾传支）二联油乳剂灭活苗对１０日龄鸡皮下注射，０．４ｍｌ／只，同时用ＮＤⅣ系苗点眼，免疫后不同时间采血测ＮＤＨＩ抗体效价和肾型传支强毒攻击试验．结果表明：二联苗免疫后２２，４２，７５天新城疫抗体平均值分别为６．６，６．９，９．９，与新城疫灭活苗免疫的同期ＨＩ抗体值无统计学差异；肾传支强毒攻击的保护率均为１００％（５／５），非免疫对照肾传支死亡率分别为４３．３％（３９／９０）和８０％（８／１０）．
Abstract Bivalent inactivated oil emulsion vaccine was. assessed in 10￣old--day chickens. Injected subcutaneously 0. 4ml per chicken, as well as dropped i.ntraocularly with Newcastle Disease Virus(NDV) active vaccine(Strain La Sota). Immuned chickens were drwn blood for testing HI antibody titer against DNV, and attacked with kidney--tropic Infectious Bronchitis Virus(KIB)' The results show: HI antibody titers against NDV were respectively 6. 6, 6. gand 9. 9 after immuned 22, 42, 75day, no significant difference from ND control immuned chickens. The protected rate of immuned chickens for KJB were all 100%, the death rate of the control non--immuned chickens with KIB was 43. 3% (39/90)and 80y6 (8/10) respectively.
