{"title":"Molecular survey of the seven recognized Eimeria species in chicken farms in Japan.","authors":"Guohong Zhang, Erika Tanahashi, Yuuki Morozumi, Ryohei Nukui, Akira Fujiwara, Nobuyuki Tsutsumi","doi":"10.1292/jvms.26-0416","DOIUrl":null,"url":null,"abstract":"<p><p>Coccidiosis is an economically important disease of chickens caused by Eimeria species. This study investigated the detection status of the seven recognized chicken Eimeria species in 108 pooled fecal samples from 56 farms in Japan using species-specific real-time PCR. All seven species were detected. E. acervulina was the most frequently detected species at both the sample and farm levels, and multiple Eimeria species were frequently detected in individual samples. Because live vaccines used in several farms contained E. acervulina, E. maxima, E. tenella, E. necatrix, and/or E. mitis, detection of these species could not distinguish vaccine-derived from field strains. Detection of E. brunetti and E. praecox indicated circulation of non-vaccine species.</p>","PeriodicalId":49959,"journal":{"name":"Journal of Veterinary Medical Science","volume":" ","pages":""},"PeriodicalIF":1.1000,"publicationDate":"2026-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Veterinary Medical Science","FirstCategoryId":"97","ListUrlMain":"https://doi.org/10.1292/jvms.26-0416","RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"VETERINARY SCIENCES","Score":null,"Total":0}
引用次数: 0
Abstract
Coccidiosis is an economically important disease of chickens caused by Eimeria species. This study investigated the detection status of the seven recognized chicken Eimeria species in 108 pooled fecal samples from 56 farms in Japan using species-specific real-time PCR. All seven species were detected. E. acervulina was the most frequently detected species at both the sample and farm levels, and multiple Eimeria species were frequently detected in individual samples. Because live vaccines used in several farms contained E. acervulina, E. maxima, E. tenella, E. necatrix, and/or E. mitis, detection of these species could not distinguish vaccine-derived from field strains. Detection of E. brunetti and E. praecox indicated circulation of non-vaccine species.
期刊介绍：
JVMS is a peer-reviewed journal and publishes a variety of papers on veterinary science from basic research to applied science and clinical research. JVMS is published monthly and consists of twelve issues per year. Papers are from the areas of anatomy, physiology, pharmacology, toxicology, pathology, immunology, microbiology, virology, parasitology, internal medicine, surgery, clinical pathology, theriogenology, avian disease, public health, ethology, and laboratory animal science. Although JVMS has played a role in publishing the scientific achievements of Japanese researchers and clinicians for many years, it now also accepts papers submitted from all over the world.
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