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Occurrence and molecular characterization of Giardia duodenalis and Cryptosporidium spp. in sheep and goats reared under dairy husbandry systems in Greece

机译：贾第鞭毛虫和隐孢子虫的发生和分子表征。希腊的奶牛饲养系统饲养的绵羊和山羊

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摘要

Giardia duodenalis and Cryptosporidium spp. are gastro-intestinal protozoa known to infect small ruminants. Both protozoa are also considered as a potential public health concern. The objective of this study was to determine their prevalence in lambs and goat kids kept under common Mediterranean dairy husbandry systems and to identify the species and genotypes infecting these small ruminants. In total, 684 faecal samples (429 from lambs and 255 from goat kids) were collected on 21 farms in Greece and examined using a quantitative immunofluorescence assay. G. duodenalis was detected in 37.3% of the lambs and 40.4% of the goat kids. On all but one of the farms G. duodenalis was detected. Most samples were typed as a mono-infection with G. duodenalis assemblage E, both on the β-giardin gene and the triose phosphate isomerase gene. Only 10% of samples were typed as mixed assemblage A and E infections. The prevalence of Cryptosporidium spp. was 5.1% in lambs and 7.1% in goat kids. In total, 8 out of the 14 farms with a sheep flock and 7 out of the 14 farms with a goat flock were positive. Cryptosporidium parvum (subtype IId), C. ubiquitum and C. xiaoi were identified, the latter especially in goat kids. In conclusion, the results of the present study illustrate that G. duodenalis and Cryptosporidium spp. occur frequently on both sheep and goats farms. The prevalence of zoonotic genotypes or species was low, indicating a limited but existing risk for zoonotic infections.
机译：贾第鞭毛虫和隐孢子虫。是已知感染小反刍动物的胃肠原虫。两种原生动物也被认为是潜在的公共卫生问题。这项研究的目的是确定它们在常见的地中海奶业饲养体系下饲养的羔羊和山羊羔中的流行情况，并确定感染这些小反刍动物的物种和基因型。总共在希腊的21个农场中收集了684份粪便样本（429份来自羔羊，255份来自山羊羔），并使用定量免疫荧光测定法进行了检查。在37.3％的羔羊和40.4％的山羊羔中检出了十二指肠球菌。除了一个农场外，其他所有农场都检测到了十二指肠球菌。在β-贾第蛋白基因和磷酸三糖异构酶基因上，大多数样品均被定型为十二指肠球菌E的单一感染。只有10％的样本被归为A和E型混合感染。隐孢子虫的流行。羔羊为5.1％，山羊羔为7.1％。总共14个有羊群的农场中有8个和14个有羊群的农场中有7个呈阳性。鉴定出小隐隐孢子虫（IId亚型），泛美隐孢子虫和小异隐孢子虫，后者特别是在山羊羔中。总之，本研究的结果表明十二指肠球菌和隐孢子虫属。绵羊和山羊农场经常发生。人畜共患病基因型或物种的患病率低，表明人畜共患病感染的风险有限但存在。

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