Asmare Kassahun, Sheferaw Desie, Aragaw Kassaye, Abera Mesele, Sibhat Berhanu, Haile Aynalem, Kiara Henry, Szonyi Barbara, Skjerve Eystein, Wieland Barbara
School of Veterinary Medicine, Hawassa University, P.O. Box 005, Hawassa, Ethiopia.
School of Veterinary Medicine, Hawassa University, P.O. Box 005, Hawassa, Ethiopia.
Acta Trop. 2016 Aug;160:68-77. doi: 10.1016/j.actatropica.2016.04.016. Epub 2016 May 3.
Gastrointestinal (GI) nematode infections are a major health challenge affecting productive and reproductive performance of sheep and goats in Ethiopia. However, there is no comprehensive summary on the occurrence and distribution of the infection at national level. This systematic review provides pooled prevalence estimates and assesses potential predictors of the nematode infections in small ruminants, i.e. helpful in planning interventions or control strategies. The review used 50 animal level datasets retrieved from 24 manuscripts. The studies used data collected from 9407 sheep and 3478 goats. A meta-analytical approach was employed to analyze Effect size (ES). The reported GI nematodes represented eleven genera affecting sheep and goats including: Haemonchus, Trichostrongylus, Teladorsagia/Ostertagia, Strongyloides, Bunostomum, Nematodirus, Chabertia, Trichuris, Cooperia, Skrjabinema and Oesophagostomum. The GI nematodes pooled prevalence estimate in the random effect model was 75.8% (95% CI: 69.6, 80.8). The subgroup analysis revealed significant (p<0.05) differences in the prevalence between different regions and type of diagnostic methods used. 'Postmortem technique' and 'eastern part of the country' were associated with higher GI nematode prevalence and accounted for 68.1% of the between studies heterogeneity. In light of the high parasitic prevalence in all agro-ecologies, the need for strategic intervention is recommended. Meanwhile, data need to be generated for some of the regions where dependable survey reports are lacking.
胃肠道线虫感染是影响埃塞俄比亚绵羊和山羊生产性能及繁殖性能的一项重大健康挑战。然而，目前尚无关于该国线虫感染发生情况和分布的全面综述。本系统评价提供了合并患病率估计值，并评估了小型反刍动物线虫感染的潜在预测因素，这有助于规划干预措施或控制策略。该评价使用了从24篇手稿中检索到的50个动物层面数据集。这些研究使用了从9407只绵羊和3478只山羊收集的数据。采用荟萃分析方法分析效应量（ES）。报告的胃肠道线虫有11个属，影响绵羊和山羊，包括：血矛线虫属、毛圆线虫属、细颈线虫属/奥斯特线虫属、类圆线虫属、仰口线虫属、细粒棘球绦虫属、夏伯特线虫属、毛首线虫属、古柏线虫属、斯克里亚宾线虫属和食道口线虫属。随机效应模型中胃肠道线虫的合并患病率估计值为75.8%（95%CI：69.6，80.8）。亚组分析显示，不同地区和所用诊断方法类型之间的患病率存在显著（p<0.05）差异。“尸检技术”和“该国东部地区”与较高的胃肠道线虫患病率相关，占研究间异质性的68.1%。鉴于所有农业生态区的寄生虫感染率都很高，建议进行战略干预。同时，对于一些缺乏可靠调查报告的地区，需要收集数据。
