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Testicular ultrasound patterns, sperm quality, seminal microbiota, caprine arthritis encephalitis virus and Coxiella burnetii infection in bucks

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dc.contributor.authorBailón-Larrañaga, N.
dc.contributor.authorGomis, J.
dc.contributor.authorContreras de Vera, Antonio
dc.contributor.authorToledo-Perona, R.
dc.contributor.authorToquet, M.
dc.contributor.authorReyes, L.E.
dc.contributor.authorQuereda, J.J.
dc.contributor.authorGonzalez-Torres, P.
dc.contributor.authorGñpmez-Marín, A.
dc.contributor.departmentSanidad Animal
dc.date.accessioned2026-05-04T08:47:24Z
dc.date.available2026-05-04T08:47:24Z
dc.date.copyright© 2026 The Authors
dc.date.issued2026-04-25
dc.description.abstractThis study assesses the frequency and severity of ultrasound-detected testicular alterations across age groups (young and adult) in 219 bucks. Sperm quality and testicular echotexture were evaluated, and their associations with reproductive pathogens (Coxiella (C.) burnetii, caprine arthritis encephalitis virus (CAEV), Chlamydia (C.) abortus and Mycoplasma (M.) agalactiae) were analyzed. Additionally, qPCR was also performed on ejaculates from seropositive bucks. Seminal microbiota was characterized in three groups: 1 (seronegative without lithiasis), 2 (seropositive with lithiasis), and 3 (qPCR-CAEV-positive). A 68.5% of bucks showed testicular microlithiasis (50.2% bilateral and 18.2% unilateral). Moreover, frequency of bilateral lesions differed according to age, being higher in adults, who also showed larger microlithiasis area (P < 0.05). Age was negatively correlated with sperm concentration (P < 0.05). Seropositivity was 35.8% for C. burnetii and 58.8% for CAEV. Adults showed higher CAEV seropositivity (P < 0.001), and 4.2% of ejaculates tested qPCR positive for this pathogen. Bacterial richness was greater (P < 0.001) in group 2 than in group 1. Firmicutes dominated groups 1 and 2, whereas Fusobacteriota prevailed in group 3. The most frequent genus in all three experimental groups was Oceanivirga, with higher abundance in group 1 than in group 2 (P < 0.05). These findings suggest that ejaculate microbiota may be influenced by ultrasound abnormalities and exposure to CAEV and C. burnetii, supporting the use of testicular ultrasound to detect bucks prone to reproductive problems and associated health risks, while also highlighting the need to include males in CAE and Q fever control programs.
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dc.format.extent17
dc.identifier.citationAnimal Reproduction Science 291 (2026) 108207
dc.identifier.doihttps://doi.org/10.1016/j.anireprosci.2026.108207
dc.identifier.eissn1873-2232
dc.identifier.issn0378-4320
dc.identifier.urihttp://hdl.handle.net/10201/229341
dc.languageeng
dc.publisherElsevier
dc.relationThis work was funded by the Spanish AEI-MICINN (PID2020- 119462RA-I00/AEI/10.13039/501100011033; PI ´AG-M). The publication is part of the grant PID2023–152404OB-I00, funded by MCIU/ AEI10.13039/501100011033 and FSE+(PI ´AG-M) and financing UCH-CEU (PI ´AG-M) aid for Recognized Research Groups (GIR25/23), the Consolidation of Research Indicators (INDI25/ 31), a grant PID2022- 137961OB-I00 (JQ) funded by MICIU/AEI/ 10.13039/501100011033 /ERDF/EU, and a Development and Innovation (I +D +i) contract (UCH-CEU and CEVA Sant´e Animale, PI: ´AG-M). NB-L is supported by a pre-doctoral contract FPI of CEU-UCH. RT-P is the recipient of a pre-doctoral contract (FPI) of the Generalitat Valenciana (CIACIF/2021/ 245). ´AG-M is supported by “Ram´on y Cajal” contract of the Spanish Ministry of Science, Innovation and Universities (RYC2021- 032245-I) funded by MICIU/ AEI/10.130 39/501100011033 by ESF Investing in your future.
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S0378432026001107?via%3Dihub
dc.rightsAttribution 4.0 International*
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectUltrasonography
dc.subjectCaprine
dc.subjectLentivirus
dc.subjectQ Fever
dc.subjectEjaculate
dc.subjectMetabarcoding
dc.subject.odsNo relacionado con ningún objetivo de desarrollo sostenible
dc.titleTesticular ultrasound patterns, sperm quality, seminal microbiota, caprine arthritis encephalitis virus and Coxiella burnetii infection in bucks
dc.typeinfo:eu-repo/semantics/article
dc.type.versioninfo:eu-repo/semantics/publishedVersion
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relation.isAuthorOfPublication5b58af3b-6ca5-48cc-a024-b740a1d57972
relation.isAuthorOfPublication.latestForDiscovery5b58af3b-6ca5-48cc-a024-b740a1d57972
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