【摘要】 对F0、F1、F2亲本经继代No.614血型基因选择后繁殖的F2、F3雏鸡，10日龄以马立克氏病强毒（MDV）攻击至60日龄的死亡率，其父母亲对No.614抗血清呈阳性反应的试验组显著低于其父母亲对此抗血清呈阴性反应的对照组。试验组25个家系中，有14个家系的F2雏鸡死亡率显著低于对照组；F3雏鸡有21个家系的死亡率低于对照组，其中8个家系具有统计意义。肿瘤发生率，以肾脏和腺胃最高，肺脏和神经组织最低。综合血型抗原检测和MDV攻毒结果，从试验组25个家系中选留强MDV抗性家系留种繁殖，继代选育。更多还原

【Abstract】 In the attack test by using of Marek’s disease virus (MDV) in F2, F3 chicks, the mortality of chick its parent have positive reactions by N14 blood group reagent inspect (experimental group) was lower than the mortality of chick its parent have negative reactions (contrastalgroup) (F2 P<0.01, F3 P<0.05 ). On the family analysis, the mortalities of chick of 14 family lines(F2) or 8 family lines(F3) from 25 family lines of the experimental group were lower than the contrastal group (P<0.01 or P <0. 05 ). It showed that the result of the attack test hy using of MDV in chick may be applicable to select parent resisted Marek’s disease.更多还原