{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,16]],"date-time":"2026-03-16T21:45:38Z","timestamp":1773697538458,"version":"3.50.1"},"reference-count":28,"publisher":"Wiley","issue":"9","license":[{"start":{"date-parts":[[2014,6,24]],"date-time":"2014-06-24T00:00:00Z","timestamp":1403568000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Animal Science Journal"],"published-print":{"date-parts":[[2014,9]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Subacute ruminal acidosis in dairy cows occurs when ruminal <jats:styled-content style=\"fixed-case\">pH<\/jats:styled-content> is below about 5.5. However, the exact threshold level of ruminal <jats:styled-content style=\"fixed-case\">pH<\/jats:styled-content> affecting cow health is still in debate. This investigation was carried out in 505 cows within 31 farms. The postpartum disorders, including dystocia, retained placenta, anestrus, cystic ovary, metritis, clinical mastitis and lameness, were analyzed. Ruminal <jats:styled-content style=\"fixed-case\">pH<\/jats:styled-content>, serum beta\u2010hydroxy butyrate (<jats:styled-content style=\"fixed-case\">SBHB<\/jats:styled-content>), serum urea nitrogen and body condition score (<jats:styled-content style=\"fixed-case\">BCS<\/jats:styled-content>) were measured once during the 3 to 6 weeks postpartum, while <jats:styled-content style=\"fixed-case\">BCS<\/jats:styled-content> was determined once more at 1 week before calving. Ruminal <jats:styled-content style=\"fixed-case\">pH<\/jats:styled-content> was determinded by ruminocentesis technique. The ruminal <jats:styled-content style=\"fixed-case\">pH<\/jats:styled-content> was evaluated to study the association with <jats:styled-content style=\"fixed-case\">BCS<\/jats:styled-content>, <jats:styled-content style=\"fixed-case\">SBHB<\/jats:styled-content> and postpartum disorders using linear regression in a generalized linear mixed model with farm as a random effect. The results show that low ruminal <jats:styled-content style=\"fixed-case\">pH<\/jats:styled-content> was associated with dystocia, metritis and lameness. Moreover, a low ruminal <jats:styled-content style=\"fixed-case\">pH<\/jats:styled-content> can be found in cows with a high loss of <jats:styled-content style=\"fixed-case\">BCS<\/jats:styled-content> after calving and also in cows with low <jats:styled-content style=\"fixed-case\">SBHB<\/jats:styled-content> postpartum. These findings confirmed the feasibility of the ruminocentesis technique and the association of low ruminal <jats:styled-content style=\"fixed-case\">pH<\/jats:styled-content> on various postpartum disorders at the individual cow level. However, the consequences of low ruminal <jats:styled-content style=\"fixed-case\">pH<\/jats:styled-content> on dairy cow health still needs more exploration for a better understanding of the physiological mechanisms.<\/jats:p>","DOI":"10.1111\/asj.12217","type":"journal-article","created":{"date-parts":[[2014,6,25]],"date-time":"2014-06-25T03:54:53Z","timestamp":1403668493000},"page":"861-867","source":"Crossref","is-referenced-by-count":9,"title":["A cow\u2010level association of ruminal <scp>pH<\/scp> on body condition score, serum beta\u2010hydroxybutyrate and postpartum disorders in <scp>T<\/scp>hai dairy cattle"],"prefix":"10.1111","volume":"85","author":[{"given":"Inchaisri","family":"Chaidate","sequence":"first","affiliation":[{"name":"Faculty of Veterinary Science Chulalongkorn University  Bangkok Thailand"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chanpongsang","family":"Somchai","sequence":"additional","affiliation":[{"name":"Faculty of Veterinary Science Chulalongkorn University  Bangkok Thailand"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Noordhuizen","family":"Jos","sequence":"additional","affiliation":[{"name":"VACQA\u2010International, Santar\u00e9m, Portugal School of Animal and Veterinary Science Charles Sturt University  WaggaWagga New South Wales Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hogeveen","family":"Henk","sequence":"additional","affiliation":[{"name":"Faculty of Veterinary Medicine Utrecht University  Utrecht The 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