Mai Hassan M, Irons Peter C, Kabir Junaidu, Thompson Peter N
Acta Vet Scand. 2013 Aug 9;55(1):56. doi: 10.1186/1751-0147-55-56.
A survey was conducted to determine the prevalence of campylobacteriosis and trichomonosis, and their concurrence with brucellosis, in cattle in three states of northern Nigeria.
A total of 602 preputial samples was collected from bulls in 250 herds and tested using culture and identification. Various indigenous and exotic breeds were studied and four major management systems were encountered. Age of the cattle was estimated using dentition, farm records or cornual rings.
The estimated true animal-level prevalence of Campylobacter fetus infection was 16.4% (95% CI: 13.0-20.7), of which 18.5% was C. f. fetus and 81.5% was C. f. venerealis. Of the latter, 92% were C. f. venerealis biovar intermedius strains. Animal-level prevalences in Adamawa, Kano and Kaduna states were 31.8%, 11.6% and 8.3% respectively, and were highest in bulls>7 years old (33.4%) and in the Gudali breed (28.8%). Of the 250 herds, 78 (25.5%, 95% CI: 19.4-32.7) had at least one infected bull, and herd prevalence was highest in the pastoral management system (43.5%). After adjustment for confounding using multivariable analysis, the odds of C. fetus infection were highest in Adamawa state (P<0.01), in the pastoral management system (P<0.01), and in bulls>7 years old (P=0.01), and tended to be higher in Bos taurus breeds (P=0.06). There was a strong positive association between the presence of campylobacteriosis and brucellosis (P<0.01), both within bulls (OR=8.3) and within herds (OR=16.0). Trichomonosis was not detected in any herds.
Bovine genital campylobacteriosis is prevalent particularly in the pastoral management system in northern Nigeria, with C. f. venerealis biovar intermedius as the major aetiology. There was a strong positive correlation between the occurrence of campylobacteriosis and brucellosis. No evidence of trichomonosis was found in herds in this study.
开展了一项调查，以确定尼日利亚北部三个州牛群中弯曲杆菌病和毛滴虫病的流行情况，以及它们与布鲁氏菌病的并发情况。
从250个牛群的公牛身上采集了总共602份包皮样本，并采用培养和鉴定方法进行检测。研究了各种本地和外来品种，遇到了四种主要的饲养管理系统。利用牙齿、农场记录或角环来估计牛的年龄。
胎儿弯曲杆菌感染的估计真实动物水平患病率为16.4%（95%置信区间：13.0 - 20.7），其中胎儿亚种占18.5%，性病亚种占81.5%。在性病亚种中，92%为中间生物变种菌株。阿达马瓦州、卡诺州和卡杜纳州的动物水平患病率分别为31.8%、11.6%和8.3%，在7岁以上的公牛中患病率最高（33.4%），在古达利品种中患病率最高（28.8%）。在250个牛群中，78个（25.5%，95%置信区间：19.4 - 32.7）至少有一头感染公牛，在放牧饲养管理系统中牛群患病率最高（43.5%）。在使用多变量分析对混杂因素进行调整后，胎儿弯曲杆菌感染的几率在阿达马瓦州最高（P<0.01），在放牧饲养管理系统中最高（P<0.01），在7岁以上的公牛中最高（P = 0.01），在肉牛品种中感染几率往往更高（P = 0.06）。弯曲杆菌病和布鲁氏菌病之间存在很强的正相关（P<0.01），在公牛个体内（比值比=8.3）和牛群内（比值比=16.0）均如此。在任何牛群中均未检测到毛滴虫病。
牛生殖器官弯曲杆菌病在尼日利亚北部尤其是放牧饲养管理系统中普遍存在，中间生物变种性病亚种是主要病因。弯曲杆菌病和布鲁氏菌病的发生之间存在很强的正相关性。在本研究的牛群中未发现毛滴虫病的证据。
