{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,27]],"date-time":"2026-07-27T04:00:51Z","timestamp":1785124851217,"version":"3.55.0"},"reference-count":35,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2026,7,26]],"date-time":"2026-07-26T00:00:00Z","timestamp":1785024000000},"content-version":"vor","delay-in-days":206,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,1,1]],"date-time":"2026-01-01T00:00:00Z","timestamp":1767225600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Animal Science Journal"],"published-print":{"date-parts":[[2026,1]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>This study characterized the association between the ventral and dorsal ruminal pH in cows. The experiment was conducted with six nonlactating rumen\u2010cannulated Holstein cows fed either a grain\u2010rich diet (65% concentrate in dry matter) or a forage\u2010only diet. The dorsal and ventral ruminal pHs were measured in each cow using two identical indwelling systems, which recorded pH every 5\u2009min. Furthermore, the volatile fatty acid concentrations and osmolality were determined in free ruminal liquid (FRL) of the ventral rumen and dorsal mat particle\u2010associated ruminal liquid (PARL) and in feces. Precision and accuracy properties of dorsal ruminal pH and ventral ruminal pH as a measure of reproducibility were statistically evaluated. Data showed that the concordance correlation coefficient, representing the strength of the relationship between the ventral and dorsal ruminal pHs, was high when feeding the grain\u2010rich diet (0.857), but low when feeding the forage\u2010based diet (0.467), with accuracy of 0.917 and 0.525, and precision 0.935 and 0.890 for grain\u2010rich diet and forage\u2010based diet, respectively. The study established a relationship between ventral and dorsal ruminal pHs showing that ventral pH can serve as a proxy for dorsal pH, though this relationship demonstrated higher reproducibility only when feeding grain\u2010rich diets.<\/jats:p>","DOI":"10.1111\/asj.70226","type":"journal-article","created":{"date-parts":[[2026,7,27]],"date-time":"2026-07-27T03:20:56Z","timestamp":1785122456000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Characterizing Intraruminal Differences of the pH and Fermentation in Cattle"],"prefix":"10.1111","volume":"97","author":[{"given":"Elsayed","family":"Mickdam","sequence":"first","affiliation":[{"name":"Nutrition and Clinical Nutrition Department, Faculty of Veterinary Medicine South Valley University  Qena Egypt"},{"name":"Centre for Animal Nutrition and Welfare University of Veterinary Medicine Vienna  Vienna Austria"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ezequias","family":"Castillo\u2010Lopez","sequence":"additional","affiliation":[{"name":"Centre for Animal Nutrition and Welfare University of Veterinary Medicine Vienna  Vienna Austria"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Raul","family":"Rivera\u2010Chacon","sequence":"additional","affiliation":[{"name":"Centre for Animal Nutrition and Welfare University of Veterinary Medicine Vienna  Vienna Austria"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5188-9004","authenticated-orcid":false,"given":"Qendrim","family":"Zebeli","sequence":"additional","affiliation":[{"name":"Centre for Animal Nutrition and Welfare University of Veterinary Medicine Vienna  Vienna Austria"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,7,26]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.2527\/jas.2010\u20103301"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.3168\/JDS.2020\u201019142"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.2527\/jas.2013\u20107223"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.3168\/jds.2022\u201021786"},{"key":"e_1_2_8_6_1","doi-asserted-by":"publisher","DOI":"10.1017\/S1751731115002888"},{"key":"e_1_2_8_7_1","doi-asserted-by":"publisher","DOI":"10.1017\/S1751731119003112"},{"issue":"12","key":"e_1_2_8_8_1","doi-asserted-by":"crossref","first-page":"8846","DOI":"10.3168\/jds.2015-9465","article-title":"Effects of Diet Forage Proportion on Maintenance Energy Requirement and the Efficiency of Metabolizable Energy Use for Lactation by Lactating Dairy Cows","volume":"98","author":"Dong L. 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