{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,9,23]],"date-time":"2025-09-23T13:32:07Z","timestamp":1758634327527,"version":"3.37.3"},"reference-count":35,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2018,3,13]],"date-time":"2018-03-13T00:00:00Z","timestamp":1520899200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"name":"National Committee for Scientific Research Poland","award":["NN 308578240"],"award-info":[{"award-number":["NN 308578240"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Animal Science Journal"],"published-print":{"date-parts":[[2018,5]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p><jats:italic>Chlamydiae<\/jats:italic>are frequently encountered Gram\u2010negative intracellular eubacteria that can cause clear manifestations or clinically asymptomatic disorders.<jats:italic>C. suis<\/jats:italic>and other chlamydia are primarily isolated in cases of reproductive disorders. This study was performed to estimate the impact of<jats:italic>Chlamydia suis<\/jats:italic>infection on reproduction in sows by analyzing reproduction rates and breeding parameters. The test was conducted on first generation (F1) pigs from Polish Landrace (<jats:styled-content style=\"fixed-case\">PL<\/jats:styled-content>)\u00a0\u00d7\u00a0Polish Large White (<jats:styled-content style=\"fixed-case\">PLW<\/jats:styled-content>). Sixty\u2010four herds were investigated and 500 vaginal swabs were collected. Isolation of<jats:styled-content style=\"fixed-case\">DNA<\/jats:styled-content>was carried out directly from the swabs. All samples were analyzed for<jats:italic>Chlamydia suis<\/jats:italic>by real\u2010time<jats:styled-content style=\"fixed-case\">PCR<\/jats:styled-content>with a locked nucleic acid (<jats:styled-content style=\"fixed-case\">LNA<\/jats:styled-content>)\u2010containing probe. To analyze the impact of chlamydia infection on reproductive parameters, evaluation questionnaires were used. Reproductive problems were found in 77.3% of the farms tested. The receiver operating characteristic curve indicated that in the farms with 10 up to 120 sows, there were higher reproductive problems with chlamydia infection than in smaller and bigger pig farms. The most common problems were estrus repetition, which was reported by 57.81% of the surveyed farms, and the birth of dead piglets, which was reported by 31.25% of the investigated pig farms. Abortions, which were reported by 28.12% of the surveyed farms, were the least common reproductive disorders.<\/jats:p>","DOI":"10.1111\/asj.13000","type":"journal-article","created":{"date-parts":[[2018,3,15]],"date-time":"2018-03-15T11:30:48Z","timestamp":1521113448000},"page":"817-824","source":"Crossref","is-referenced-by-count":3,"title":["Occurrence of reproductive disorders in pig herds with and without<i>Chlamydia suis<\/i>infection \u2013 statistical analysis of breeding parameters"],"prefix":"10.1111","volume":"89","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3884-4834","authenticated-orcid":false,"given":"Krzysztof","family":"Rypu\u0142a","sequence":"first","affiliation":[{"name":"Division of Infectious Diseases of Animals and Veterinary Administration Department of Epizootiology with Clinic of Birds and Exotic Animals Faculty of Veterinary Medicine Wroclaw University of Environmental and Life Sciences Wroc\u0142aw Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Aleksandra","family":"Kumala","sequence":"additional","affiliation":[{"name":"Laboratory of Neurotoxicology and Environmental Diagnosis Faculty of Health Science Wroclaw Medical University Wroc\u0142aw Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Katarzyna","family":"P\u0142oneczka\u2010Janeczko","sequence":"additional","affiliation":[{"name":"Division of Infectious Diseases of Animals and Veterinary Administration Department of Epizootiology with Clinic of Birds and Exotic Animals Faculty of Veterinary Medicine Wroclaw University of Environmental and Life Sciences Wroc\u0142aw Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Pawe\u0142","family":"Lis","sequence":"additional","affiliation":[{"name":"Division of Infectious Diseases of Animals and Veterinary Administration Department of Epizootiology with Clinic of Birds and Exotic Animals Faculty of Veterinary Medicine Wroclaw University of Environmental and Life Sciences Wroc\u0142aw Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ewa","family":"Karuga\u2010Ku\u017aniewska","sequence":"additional","affiliation":[{"name":"Division of Infectious Diseases of Animals and Veterinary Administration Department of Epizootiology with Clinic of Birds and Exotic Animals Faculty of Veterinary Medicine Wroclaw University of Environmental and Life Sciences Wroc\u0142aw Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Krzysztof","family":"Dudek","sequence":"additional","affiliation":[{"name":"Faculty of Mechanical Engineering Technical University of Wroc\u0142aw Wroc\u0142aw Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ireneusz","family":"Ca\u0142kosi\u0144ski","sequence":"additional","affiliation":[{"name":"Laboratory of Neurotoxicology and Environmental Diagnosis Faculty of Health Science Wroclaw Medical University Wroc\u0142aw Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Patrycja","family":"Ku\u017anik","sequence":"additional","affiliation":[{"name":"Division of Infectious Diseases of Animals and Veterinary Administration Department of Epizootiology with Clinic of Birds and Exotic Animals Faculty of Veterinary Medicine Wroclaw University of Environmental and Life Sciences Wroc\u0142aw Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Pawe\u0142","family":"Chorbi\u0144ski","sequence":"additional","affiliation":[{"name":"Division of Infectious Diseases of Animals and Veterinary Administration Department of Epizootiology with Clinic of Birds and Exotic Animals Faculty of Veterinary Medicine Wroclaw University of Environmental and Life Sciences Wroc\u0142aw Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2018,3,13]]},"reference":[{"key":"e_1_2_7_2_1","doi-asserted-by":"crossref","first-page":"420","DOI":"10.1128\/jb.151.1.420-428.1982","article-title":"Chlamydia trachomatis has penicillin binding proteins but not detectable muramic acid","volume":"151","author":"Barbour A. 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