Kaaboub El Aid, Ouchene Nassim, Ouchene-Khelifi Nadjet Amina, Khelef Djamel
Institute of Veterinary Sciences, University of Saad Dahlab Blida1, 09000, Blida, Algeria.
National High Veterinary School of Algiers, 16000, Algeria.
Vet World. 2019 May;12(5):713-718. doi: 10.14202/vetworld.2019.713-718. Epub 2019 May 28.
This study was performed to determine the prevalence of bovine brucellosis in Medea region, Northern Algeria.
The study was carried out on 495 non-vaccinated cattle, of which 280 (30 males and 250 females) belonged to 57 cattle farms and 215 cows were sampled at abattoirs of Medea. Sera collected from the cattle were tested using the Rose Bengal test and confirmed by histopathological analysis.
Serological examination revealed that 7/57 farms (12.28%) were infected, of which 7/280 (2.5%) cattle were seropositive. The prevalence in females and males was 2.4% (6/250) and 3.33% (1/30), respectively. No significant difference has been observed between females and males. Older animals (≥8 years) were infected more. The prevalence of infection was 9.1%. Seroprevalence of infection in cows that have already had abortion was higher compared with non-aborted cows (4.34% and 2.20%, respectively). In abattoirs, a total of 25 (11.62%) seropositive cows were detected, and the histopathological analysis was positive in all these cows.
The study indicates that brucellosis indeed exists in cattle in Medea and shows that the meat of slaughtered cattle tested positive for brucellosis may constitute a real risk of transmission to both butchery personnel and consumers, which requires that the meat of infected animals should be analyzed before being marketed.
本研究旨在确定阿尔及利亚北部美迪亚地区牛布鲁氏菌病的流行情况。
本研究对495头未接种疫苗的牛进行，其中280头（30头雄性和250头雌性）来自57个养牛场，215头母牛在美迪亚的屠宰场采样。采集的牛血清采用玫瑰红试验检测，并通过组织病理学分析进行确认。
血清学检查显示，57个农场中有7个（12.28%）受到感染，其中280头牛中有7头（2.5%）血清呈阳性。雌性和雄性的患病率分别为2.4%（6/250）和3.33%（1/30）。未观察到雌性和雄性之间有显著差异。年龄较大的动物（≥8岁）感染率更高。感染率为9.1%。已流产母牛的感染血清阳性率高于未流产母牛（分别为4.34%和2.20%）。在屠宰场，共检测到25头（11.62%）血清阳性母牛，所有这些母牛的组织病理学分析均为阳性。
该研究表明美迪亚地区的牛确实存在布鲁氏菌病，并且表明屠宰的牛布鲁氏菌病检测呈阳性的肉可能对屠宰人员和消费者构成真正的传播风险，这就要求对感染动物的肉在上市前进行分析。
