贵州奶牛传染病检测和预防的研究

2006—2008年对贵州省内610份奶牛血清进行检测,其中有116份血清为乙型肝炎表面抗原(HBsAg)阳性,平均阳性率19%;534份牛血清样品中,检出奶牛传染性鼻气管炎阳性血清29份,阳性率为5.4%,而运用血清补体结合反应(CFT)检测奶牛传染性胸膜肺炎,均为阴性。将HBsAg、HBeAg双阳性奶牛肝组织做电镜观察,发现肝组织中有密集的HBV颗粒。结果表明,贵州省奶牛可能存在乙型肝炎、传染性鼻气管炎的感染,应当引起奶牛养殖者的高度重视。

Prevention and Detection on Infectious Diseases of Dairy Cow in Guizhou Province

From 2006 to 2008,116 hepatitis B positive serums were detected in 610 dairy cow serums in Guizhou province, the mean positive ratio of HBsAg was 19%(116/610). 29 infectious bovine rhinotracheitis positive serums were detected by neutralization test in 534 dairy cow serums, the positive ratio was 5.4%(29/534). The antibody of dairy cow contagious pleuropneumonia were negative in 534 dairy cow serums by CFT. HBV particles were observed by electron microscopic observation. The results indicated that dairy cow type B hepatitis and infectious rhinotracheitis existed probably in Guizhou province. The breeding cow industry should pay close attention to dairy cow type B hepatitis and infectious rhinotracheitis.