湖北省蛋鸡J亚群禽白血病的血清学调查

Serological investigation of the prevalence of subgroup J avian leukosis in layers in Hubei Province

为了解湖北省蛋鸡J亚群白血病的感染情况,采用禽白血病病毒J亚群抗体检测试剂盒对10个疑似感染的商品代蛋鸡场和10个临床健康父母代种鸡场共721份样本进行了血清学调查。结果显示,J亚群禽白血病病毒血清抗体平均阳性率为5.8%,其中商品代蛋鸡为22.1%,父母代种鸡为1.9%,鸡场阳性率均达50.0%。4个品种蛋鸡的检测结果表明,海兰褐蛋鸡感染情况较为严重,其J亚群禽白血病病毒血清抗体的平均阳性率达9.0%,其次为罗曼褐蛋鸡,为1.0%;尼克粉蛋鸡为0.5%;而江汉本地土鸡阳性率均为0。调查结果表明,湖北省的蛋鸡群中存在J亚群禽白血病病毒感染,不同品种蛋鸡的感染程度存在明显差异。

721 serum samples collected from 10 commercial layer farms and 10 laying breeder hen farms were detected by using an antibody test kit for the subgroup J avian leukosis virus.The mean positive rate with subgroup J avian leukosis virus antibody was 5.8%,but the positive rate in the commercial layers and the parental breeding hens was 22.1% and 1.9%,respectively.The positive rates on the 2 kinds of farms were 50%.The detection results in 4 different breeds revealed that Hy-line Brown layers were severely infected,and the positive rates were 9.0%,1.0%,0.5% or 0 in Hy-line Brown layers,Roman Brown layers,Nicphone layers or the native Jianghan chickens,respectively.These results showed that the subgroup J avian leukosis virus infection existed in the layer populations in Hubei Province,but the infection rates were different among the 4 breeds.