{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,20]],"date-time":"2026-05-20T14:08:57Z","timestamp":1779286137435,"version":"3.51.4"},"reference-count":24,"publisher":"Wiley","issue":"8","license":[{"start":{"date-parts":[[2021,4,14]],"date-time":"2021-04-14T00:00:00Z","timestamp":1618358400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Aust Veterinary J"],"published-print":{"date-parts":[[2021,8]]},"abstract":"<jats:sec><jats:title>Objectives<\/jats:title><jats:p>Measurement of ruminal pH throughout a 148\u2010day feeding period in cattle fed commercial diets and to relate this to feed intake, growth rate and feed conversion ratio. Factors contributing to variation in rumen pH, including meal frequency, duration and weight, and, total daily intake, were also evaluated.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Forty\u2010eight cattle were randomly allocated to two pens and 12 randomly selected from each pen had rumen pH monitoring boli inserted. Ruminal pH was measured every 10\u2009min and feed intake was measured continually. The cattle were fed a commercial feedlot diet for 148\u2009days and weighed into and out of the feedlot to measure growth rate and to calculate feed conversion ratio. Cattle from both pens were registered to collect individual feed intake data using the GrowSafe\u00ae feed management system.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Mean ruminal pH decreased with days on feed. Mean daily dry matter intake was the major contributor to greater average daily gain and lower ruminal pH. Lower mean ruminal pH was associated with greater average daily gain and lower feed conversion ratio, where it remained above the threshold of 5.6. There was no association between ruminal pH and average daily gain or feed conversion ratio for mean ruminal pH below 5.6.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Ruminal acidosis can occur at any time during the feeding period, and the risk could be greater as days on feed increase. Feedlot production outcomes are not improved by ruminal pH depression below the threshold of 5.6.<\/jats:p><\/jats:sec>","DOI":"10.1111\/avj.13069","type":"journal-article","created":{"date-parts":[[2021,4,14]],"date-time":"2021-04-14T22:51:36Z","timestamp":1618440696000},"page":"319-325","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Ruminal <scp>pH<\/scp> and its relationship with dry matter intake, growth rate, and feed conversion ratio in commercial Australian feedlot cattle fed for 148\u2009days"],"prefix":"10.1111","volume":"99","author":[{"given":"PMV","family":"Cusack","sequence":"first","affiliation":[{"name":"Australian Livestock Production Services  PO Box 468 Cowra New South Wales 2794 Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"D","family":"Dell'Osa","sequence":"additional","affiliation":[{"name":"Phibro Animal Health Corporation  Suite 416, 14 Lexington Dr Bella Vista New South Wales 2153 Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"G","family":"Wilkes","sequence":"additional","affiliation":[{"name":"Phibro Animal Health Corporation  Suite 416, 14 Lexington Dr Bella Vista New South Wales 2153 Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"D","family":"Grandini","sequence":"additional","affiliation":[{"name":"Phibro Animal Health  Ave. Pres. Tancredo de Almeida, Neves 1063 Guarulhos S\u00e3o Paulo 07112\u2010070 Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"LO","family":"Tedeschi","sequence":"additional","affiliation":[{"name":"Department of Animal Science Texas A&amp;M University  College Station Texas 77843\u20102471 USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2021,4,14]]},"reference":[{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.2527\/jas.2010-3301"},{"key":"e_1_2_9_3_1","doi-asserted-by":"publisher","DOI":"10.2527\/jas.2010-3378"},{"key":"e_1_2_9_4_1","first-page":"702572","article-title":"Ruminal acidosis in feedlot: from aetiology to prevention","author":"Hernandez J","year":"2014","journal-title":"Hindawi Sci World Jnl"},{"key":"e_1_2_9_5_1","doi-asserted-by":"publisher","DOI":"10.4141\/A02-061"},{"key":"e_1_2_9_6_1","doi-asserted-by":"publisher","DOI":"10.2527\/jas.2014-7599"},{"key":"e_1_2_9_7_1","volume-title":"ggplot2 elegant graphics for data analysis","author":"Wickham H","year":"2016"},{"key":"e_1_2_9_8_1","volume-title":"R: A language and environment for statistical computing","author":"Core Team R","year":"2020"},{"key":"e_1_2_9_9_1","volume-title":"The ruminant nutrition system: volume II \u2013 tables of equations and coding","author":"Tedeschi LO","year":"2020"},{"key":"e_1_2_9_10_1","doi-asserted-by":"publisher","DOI":"10.2527\/jas.2010-3489"},{"key":"e_1_2_9_11_1","doi-asserted-by":"publisher","DOI":"10.3390\/ani9060322"},{"key":"e_1_2_9_12_1","doi-asserted-by":"publisher","DOI":"10.1186\/1297-9686-19-2-225"},{"key":"e_1_2_9_13_1","unstructured":"PackerEL.Rumen fermentation and body weight gain in grazing beef cattle treated with monensin. B.Vet.Biol.\/BVSc. Honours thesis School of Animal and Veterinary Sciences Charles Sturt University.2010:p16."},{"key":"e_1_2_9_14_1","doi-asserted-by":"publisher","DOI":"10.3168\/jds.2006-478"},{"key":"e_1_2_9_15_1","doi-asserted-by":"publisher","DOI":"10.1152\/ajpregu.00120.2010"},{"key":"e_1_2_9_16_1","doi-asserted-by":"publisher","DOI":"10.3168\/jds.2010-3406"},{"key":"e_1_2_9_17_1","doi-asserted-by":"publisher","DOI":"10.2527\/jas.2010-3460"},{"key":"e_1_2_9_18_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.tvjl.2007.12.016"},{"key":"e_1_2_9_19_1","doi-asserted-by":"publisher","DOI":"10.3168\/jds.S0022-0302(06)72487-0"},{"key":"e_1_2_9_20_1","doi-asserted-by":"crossref","first-page":"141","DOI":"10.1186\/1751-0147-44-S1-S141","article-title":"Bovine endotoxicosis \u2013 Some aspects of relevance to production diseases. A review","volume":"98","author":"Andersen PH","year":"2003","journal-title":"Acta Vet Scand"},{"key":"e_1_2_9_21_1","doi-asserted-by":"publisher","DOI":"10.3168\/jds.2016-12001"},{"key":"e_1_2_9_22_1","doi-asserted-by":"publisher","DOI":"10.2527\/jas.2016-0765"},{"key":"e_1_2_9_23_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1751-0813.2011.00802.x"},{"key":"e_1_2_9_24_1","doi-asserted-by":"publisher","DOI":"10.2527\/1998.761287x"},{"key":"e_1_2_9_25_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1751-0813.1982.tb02756.x"}],"container-title":["Australian Veterinary Journal"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/avj.13069","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/full-xml\/10.1111\/avj.13069","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/avj.13069","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,8,29]],"date-time":"2023-08-29T22:55:31Z","timestamp":1693349731000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1111\/avj.13069"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,4,14]]},"references-count":24,"journal-issue":{"issue":"8","published-print":{"date-parts":[[2021,8]]}},"alternative-id":["10.1111\/avj.13069"],"URL":"https:\/\/doi.org\/10.1111\/avj.13069","archive":["Portico"],"relation":{},"ISSN":["0005-0423","1751-0813"],"issn-type":[{"value":"0005-0423","type":"print"},{"value":"1751-0813","type":"electronic"}],"subject":[],"published":{"date-parts":[[2021,4,14]]},"assertion":[{"value":"2020-11-04","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2021-03-06","order":1,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2021-04-14","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}