摘要
The prevalence of trypanosomiasis in sheep is of worldwide concern. It is a hemoparasitic disease caused by the protozoan Trypanosoma (T) spp., andthe biological cycle of transmission involves susceptible hosts and certain hematophagous flies, such as Tabanids and Stomoxys. The objective of this study was to determine the presence of Trypanosomasp. in sheep (Ovisaries). Through an applied, descriptive-prospective-cross-sectional qualitative study conducted between October 1, 2018, and January 29, 2019, blood samples extracted from the jugular vein were analyzed by the blood smear method using 2 Romanowsky staining techniques (Giemsa and Diff-Quick). Animals studied were between ages of 3 and 10 years, coming from 3 farms in the city of Colimes (Ecuador). Of 100 sampled and processed animals, 2 (2%) were positive for Trypanosoma sp., constituting the first report of this hemoparasite in sheep in Ecuador, and 1 case of Babesia spp. (1%) and 4 cases of Anaplasma marginale (4%) were also identified. However, none of these cases presented symptomatology of any hemotropic-parasitic disease. Subsequently, the positive animals were dewormed.The presence of these parasites wasconfirmedat the study site and,thus, could become a serious animal health problem.
摘要译文
绵羊锥虫病的流行是全世界关注的问题。它是由原生动物锥虫（T）属引起的一种血液寄生虫病，其传播的生物周期涉及易感宿主和某些嗜血的苍蝇，例如Tabanis和Stomoxys。这项研究的目的是确定锥虫的存在。在绵羊（卵巢）中。通过在2018年10月1日至2019年1月29日进行的应用性，描述性，前瞻性横断面定性研究，使用2种Romanowsky染色技术（Giemsa和Diff-快）。研究的动物年龄在3至10岁之间，它们来自厄瓜多尔科莱姆斯市的3个农场。在100只经过取样和加工的动物中，有2（2％）的锥虫属阳性，构成了厄瓜多尔绵羊中这种血寄生虫的首次报道，还有1例巴贝斯氏菌。还鉴定出了1例（1％）和边缘性无浆膜（4％）。但是，这些病例均未出现任何嗜血性-寄生虫病的症状。随后，对阳性动物进行了驱虫。研究现场确认了这些寄生虫的存在，因此可能成为严重的动物健康问题。
COELLO-PERALTA; Roberto Darwin et al.. First report of sheep naturally infected with Trypanosoma sp. in Ecuador.[J]. Ciencia Rural, 2021,51(1)