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Emerging threat of Eimeria operational taxonomic units (OTUs) on poultry production

机译：Eimeria运营分类单位（OTUS）对家禽生产的新兴威胁

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摘要

Coccidiosis is an antagonistic poultry disease which negatively impacts animal welfare and productivity. The disease is caused by an obligate, intracellular protozoon known as Eimeria. Several Eimeria species known to infect chickens have been well documented. However, recent studies have elucidated the emergence of three novel genetic variants or operational taxonomic units (OTUs). The discovery of OTUx, OTUy and OTUz complicates the identification and diagnosis of coccidiosis. OTUs are clusters of unknown or uncultivated organisms that are grouped according to a similarity in DNA sequence to a set of specific gene markers. OTUs have been reported in the Earth's Southern Hemisphere, including Australia, Venezuela, India, Zambia, Uganda, Tanzania, China and Ghana. Elucidating their impact on the poultry industry is fundamental in preventing anticoccidial resistance and to access the potential of OTUs as vaccine candidates to provide cross-protection against similar Eimeria species. The identification of OTUs further decreases the risk of false negative coccidial diagnosis. Therefore, this article reviews the importance and risk imposed by OTUs, coupled with their prevalence and geographical distribution in chickens globally.
机译：椰子症是一种对动物福利和生产力产生负面影响的拮抗家禽疾病。该病是由称为eimeria的迫使细胞内原生源引起的。已知的几种已知感染鸡的物种已经充分了解。然而，最近的研究阐明了三种新型遗传变异或操作分类单位（OTU）的出现。 Orux，Otuy和Otuz的发现使持释枸杞子的鉴定和诊断使其复杂化。 OTU是根据DNA序列中的相似性对一组特定基因标志物进行分组的未知或未灭绝的生物的簇。 Otus曾在地球的南半球报道，包括澳大利亚，委内瑞拉，印度，赞比亚，乌干达，坦桑尼亚，中国和加纳。阐明它们对家禽行业的影响是防止抗​​痛抗性的根本性，并且可以进入OTUS作为疫苗候选者的潜力，以提供对类似的eimeria种类的交叉保护。 OTU的鉴定进一步降低了假阴性疾病诊断的风险。因此，本文审查了OTUS强加的重要性和风险，加上全球鸡的普遍存在和地理分布。

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