Department of Veterinary Medicine, United Arab Emirates University, United Arab Emirates.
Department of Data Analytics in the Digital Era, College of Business and Economics,United Arab Emirates University, P.O. Box 15551, Al Ain, United Arab Emirates.
Vet Ital. 2020 Dec 1;56(3):163-168. doi: 10.12834/VetIt.2257.12932.1.
The serostatus of five abortigenic agents and the association between abortion history and Coxiella burnetii seropositivity were assessed in 350 dairy cattle from Al Ain, UAE. The bovine sera were ELISA-screened for C. burnetii, Leptospira Hardjo, Neospora caninum, and Brucella abortus antibodies, plus bovine pestivirus (BVDV) antigen. The serology data were collated and the level of significance between the proportions of C. burnetii-seropositive cattle with and without abortion history assessed by the Z test of two proportions. Of the 350 cattle, 41.4%, 1.7%, 1.4%, 0.3%, and 0.0% were seropositive to the above pathogens, respectively. Besides, 61.9%, 2.9%, 1.0%, 0.0%, and 0.0% of the 105 cattle with history of abortion and 32.7%, 1.2%, 1.6%, 0.0% and 0.0% of the 245 seropositive cattle with no history of abortion were also seropositive for the above pathogens respectively. Moreover, the proportion of C. burnetii-seropositive cattle with history of abortion were significantly higher than the C. burnetii-seropositive ones without abortion history (p-value < 0.01). Apparent C. burnetii infections were relatively higher than the other four pathogens suggesting this bacterium contributed to abortion in the herd. Additional research on the public and bovine health implications of C. burnetii and Leptospira in the UAE are urgently needed.
在阿联酋艾因的 350 头奶牛中，评估了五种致流产病原体的血清学状态以及流产史与科氏立克次体血清阳性之间的关系。采用 ELISA 法对牛血清进行了检测，以检测科氏立克次体、钩端螺旋体 Hardjo、新孢子虫和布鲁氏菌流产抗体，以及牛病毒性腹泻病毒（BVDV）抗原。对血清学数据进行了整理，并通过两比例 Z 检验评估了具有和不具有流产史的科氏立克次体血清阳性牛的比例之间的显著性水平。在 350 头奶牛中，分别有 41.4%、1.7%、1.4%、0.3%和 0.0%对上述病原体呈血清阳性。此外，105 头有流产史的奶牛中，分别有 61.9%、2.9%、1.0%、0.0%和 0.0%对上述病原体呈血清阳性，而 245 头无流产史的血清阳性牛中，分别有 32.7%、1.2%、1.6%、0.0%和 0.0%对上述病原体呈血清阳性。此外，有流产史的科氏立克次体血清阳性牛的比例明显高于无流产史的科氏立克次体血清阳性牛（p 值<0.01）。明显的科氏立克次体感染率高于其他四种病原体，这表明该细菌是该牛群流产的原因之一。迫切需要对阿联酋科氏立克次体和钩端螺旋体对公共和牛健康的影响进行进一步研究。
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