Adesiyun A A, Jagun A G, Kwaga J K, Tekdek L B
Int J Zoonoses. 1985 Mar;12(1):1-5.
Fresh milk from dairy cows kept at semi-intensive husbandry in governmental and institutional farms and dual purpose Fulani nomadic husbandry around Zaria, Nigeria were screened for Coxiella burnetii using the mouse inoculation test. Of the 20 herds from both management systems tested, 16(80.0%) contained dairy cows shedding C. burnetii in their milk. Of a total of 169 cows tested, 41(24.3%) were shedders. Eighteen (22.0%) of 82 cows kept under semi-intensive and 23(26.4%) of 87 cows kept under Fulani nomadic systems were shedding C. burnetii. The difference in frequency of shedding C. burnetii between both system was not statistically significant (P greater than 0.05, X2). Of the 88 dairy cows serologically tested for C. burnetii agglutinins by the capillary agglutination test (C.A.T), 48(54.5%) were sero-positive and 40(45.5%) were seronegative. Among Q-fever sero-positive cows, 11(22.9%) were shedders and 37(77.1%) were not shedding C. burnetii in their milk. Of the sero-negative cows, 6(15.0%) and 34(85.0%) were shedders and non-shedders, respectively. With milk from Fulani nomadic cows predominantly taken raw or made into unheated fermented milk products, the health risk to the consumers of such products cannot be over-emphasized.
采用小鼠接种试验，对尼日利亚扎里亚周边政府和机构农场半集约化饲养的奶牛以及富拉尼游牧两用饲养方式下奶牛所产的新鲜牛奶进行了伯氏考克斯体筛查。在接受检测的来自两种管理系统的20个牛群中，有16个（80.0%）牛群的奶牛所产牛奶中含有伯氏考克斯体。在总共检测的169头奶牛中，有41头（24.3%）为排菌者。半集约化饲养的82头奶牛中有18头（22.0%）、富拉尼游牧饲养系统的87头奶牛中有23头（26.4%）排伯氏考克斯体。两种系统之间伯氏考克斯体排菌频率的差异无统计学意义（P大于0.05，卡方检验）。通过毛细管凝集试验（C.A.T）对88头奶牛进行伯氏考克斯体凝集素血清学检测，其中48头（54.5%）为血清阳性，40头（45.5%）为血清阴性。在Q热血清阳性的奶牛中，有11头（22.9%）为排菌者，37头（77.1%）所产牛奶中不排伯氏考克斯体。在血清阴性的奶牛中，分别有6头（15.0%）为排菌者，34头（85.0%）为非排菌者。由于富拉尼游牧奶牛所产牛奶主要为生鲜奶或制成未经加热的发酵奶制品，此类产品对消费者的健康风险再怎么强调都不为过。
