{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,6]],"date-time":"2026-10-06T16:57:05Z","timestamp":1791305825071,"version":"4.3.1"},"reference-count":34,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2012,10,29]],"date-time":"2012-10-29T00:00:00Z","timestamp":1351468800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Reprod Domestic Animals"],"published-print":{"date-parts":[[2013,6]]},"abstract":"Contents<\/jats:title>\n \n The objective of this study was to assess the effects of\n \n C<\/jats:styled-content>\n oxiella burnetii\n <\/jats:italic>\n shedding or seropositivity on post\u2010partum recovery and subsequent fertility in high\u2010producing dairy cows. Given the difficulty in diagnosing\n \n C<\/jats:styled-content>\n .\u00a0burnetii\n <\/jats:italic>\n infection at the farm level, an exhaustive series of tests in 43 pregnant animals that delivered at least one live calf were conducted, including blood serology and\n PCR<\/jats:styled-content>\n of milk or colostrum, cotyledons (only at parturition), faeces, vaginal fluid against\n \n C<\/jats:styled-content>\n <\/jats:italic>\n .\u00a0\n burnetii<\/jats:italic>\n on gestation Day 171\u2013177, at parturition and on Days 1\u20137, 8\u201314, 15\u201321, 22\u201328, 29\u201335 and 90\u201397 post\u2010partum. During scheduled herd visits, ultrasonography (\n US<\/jats:styled-content>\n ) of the genital tract and examination of vaginal fluid were performed on Days 15\u201321 (\n V<\/jats:styled-content>\n 1), 22\u201328 (\n V<\/jats:styled-content>\n 2), 29\u201335 (\n V<\/jats:styled-content>\n 3) and 51\u201357 (\n V<\/jats:styled-content>\n 4) post\u2010partum by the same veterinarian. Logistic regression analysis revealed that the likelihood of suffering endometritis (the presence of echogenic intrauterine fluid (\n IUF<\/jats:styled-content>\n ), cervical diameter of \u22654\u00a0cm or endometrial thickness \u22650.75\u00a0cm) was lower in\n \n C<\/jats:styled-content>\n .\u00a0burnetii\u2010\n <\/jats:italic>\n seropositive animals (\n OR<\/jats:styled-content>\n \u00a0=\u00a00.10), compared with\n \n C<\/jats:styled-content>\n .\u00a0burnetii\n <\/jats:italic>\n \u2010seronegative animals. According to\n K<\/jats:styled-content>\n aplan\u2013\n M<\/jats:styled-content>\n eier survival analysis,\n \n C<\/jats:styled-content>\n .\u00a0burnetii\n <\/jats:italic>\n \u2010seronegative and non\u2010shedding cows showed a delayed return to luteal activity and conception was delayed in non\u2010shedding animals, compared with the remaining animals. Overall, the results of our study provide useful insight into the effects of\n \n C<\/jats:styled-content>\n .\u00a0burnetii\n <\/jats:italic>\n infection on post\u2010partum recovery and subsequent fertility. In particular, animals not infected with\n \n C<\/jats:styled-content>\n oxiella\n <\/jats:italic>\n seem to be susceptible to infection and not protected against the bacterium in dairy herds. The elevated costs of determining an infection at the farm level, make monitoring of cows virtually impossible from a clinical point of view.\n <\/jats:p>","DOI":"10.1111\/rda.12095","type":"journal-article","created":{"date-parts":[[2012,10,29]],"date-time":"2012-10-29T14:19:25Z","timestamp":1351520365000},"page":"441-446","source":"Crossref","is-referenced-by-count":23,"title":["\n C<\/scp>\n oxiella burnetii\n <\/i>\n Shedding During the Peripartum Period and Subsequent Fertility in Dairy Cattle"],"prefix":"10.1111","volume":"48","author":[{"given":"I","family":"Garcia\u2010Ispierto","sequence":"first","affiliation":[{"name":"Department of Animal Production University of Lleida Lleida Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"I","family":"L\u00f3pez\u2010Helguera","sequence":"additional","affiliation":[{"name":"Department of Animal Production University of Lleida Lleida 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