{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,25]],"date-time":"2026-06-25T23:47:10Z","timestamp":1782431230689,"version":"3.54.5"},"reference-count":13,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2026,5,31]],"date-time":"2026-05-31T00:00:00Z","timestamp":1780185600000},"content-version":"vor","delay-in-days":150,"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"}],"funder":[{"DOI":"10.13039\/501100003993","name":"Ministry of Agriculture, Forestry and Fisheries","doi-asserted-by":"publisher","award":["JPJ011299"],"award-info":[{"award-number":["JPJ011299"]}],"id":[{"id":"10.13039\/501100003993","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Animal Science Journal"],"published-print":{"date-parts":[[2026,1]]},"abstract":"ABSTRACT<\/jats:title>\n \n The CO\n 2<\/jats:sub>\n \u2010based method is a high\u2010throughput technique for quantifying methane (CH\n 4<\/jats:sub>\n ) emissions by combining predicted CO\n 2<\/jats:sub>\n emissions with the CH\n 4<\/jats:sub>\n :CO\n 2<\/jats:sub>\n concentration ratio in exhaled air. When applying this method to evaluate dietary CH\n 4<\/jats:sub>\n mitigation, uncertainty in predicted CO\n 2<\/jats:sub>\n emissions remains a concern. Therefore, we aimed to quantify the impact of this uncertainty on the evaluation of dietary CH\n 4<\/jats:sub>\n \u2010reducing effects. A database of published dairy cow studies reporting CH\n 4<\/jats:sub>\n emissions was screened, yielding 36 control\u2013treatment comparisons from 19 studies. For both the control and treatment records, CH\n 4<\/jats:sub>\n emissions were calculated using CO\n 2<\/jats:sub>\n emissions predicted by the two existing equations. Dietary CH\n 4<\/jats:sub>\n \u2010reducing effects were expressed as percentage reductions relative to the control. The agreement between the CH\n 4<\/jats:sub>\n reductions derived from the observed and predicted CH\n 4<\/jats:sub>\n emissions was evaluated. The mean bias was not significantly different from zero for either equation, indicating no substantial systematic bias. The standard deviation of the differences between the observed and predicted CH\n 4<\/jats:sub>\n reductions was around 3 percentage points. These results provide a quantitative basis for understanding the prediction uncertainty and suggest that the CO\n 2<\/jats:sub>\n \u2010based method can serve as a preliminary tool for evaluating the relative CH\n 4<\/jats:sub>\n mitigation when direct gas measurements are unavailable.\n <\/jats:p>","DOI":"10.1111\/asj.70197","type":"journal-article","created":{"date-parts":[[2026,6,1]],"date-time":"2026-06-01T06:30:09Z","timestamp":1780295409000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Assessing Uncertainty in the CO\n 2<\/sub>\n \u2010Based Method for Evaluating Dietary Effects on Enteric Methane Emissions in Lactating Cows"],"prefix":"10.1111","volume":"97","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7200-0745","authenticated-orcid":false,"given":"Kohei","family":"Oikawa","sequence":"first","affiliation":[{"name":"Institute of Livestock and Grassland Science NARO Tsukuba Ibaraki Japan"},{"name":"Graduate School of Agricultural Science Tohoku University Sendai Miyagi Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tomoyuki","family":"Suzuki","sequence":"additional","affiliation":[{"name":"Institute of Livestock and Grassland Science NARO Nasushiobara Tochigi Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1092-5691","authenticated-orcid":false,"given":"Sanggun","family":"Roh","sequence":"additional","affiliation":[{"name":"Graduate School of Agricultural Science Tohoku University Sendai Miyagi Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7408-015X","authenticated-orcid":false,"given":"Satoshi","family":"Haga","sequence":"additional","affiliation":[{"name":"Graduate School of Agricultural Science Tohoku University Sendai Miyagi Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,5,31]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.18637\/jss.v067.i01"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.3168\/jds.2022\u201022091"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.dib.2023.109459"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.3390\/ani9100837"},{"key":"e_1_2_8_6_1","doi-asserted-by":"publisher","DOI":"10.3168\/jds.2024\u201025050"},{"key":"e_1_2_8_7_1","doi-asserted-by":"publisher","DOI":"10.3168\/jds.2023\u201024414"},{"key":"e_1_2_8_8_1","doi-asserted-by":"publisher","DOI":"10.3168\/jds.2013\u20107234"},{"key":"e_1_2_8_9_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.livsci.2010.01.001"},{"key":"e_1_2_8_10_1","doi-asserted-by":"publisher","DOI":"10.1111\/asj.13916"},{"key":"e_1_2_8_11_1","doi-asserted-by":"publisher","DOI":"10.5713\/ab.250867"},{"key":"e_1_2_8_12_1","volume-title":"R: A Language and Environment for Statistical Computing. Version 4.5.2","author":"R Core Team","year":"2025"},{"key":"e_1_2_8_13_1","unstructured":"Sjaunja L. O. L.Baevre L.Junkkarinen J.Pedersen andJ.Set\u00e4l\u00e4.1991. \u201cA Nordic Proposal for an Energy Corrected Milk (ECM) Formula.\u201dPerformance Recording of Animals: State of the Art 1990. Proceedings of the 27th Biennial Session of the International Committee for Animal Recording Paris France 156\u2013157."},{"key":"e_1_2_8_14_1","doi-asserted-by":"publisher","DOI":"10.1093\/jas\/skac197"}],"container-title":["Animal Science Journal"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/asj.70197","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/full-xml\/10.1111\/asj.70197","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/asj.70197","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,6,25]],"date-time":"2026-06-25T23:25:20Z","timestamp":1782429920000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1111\/asj.70197"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,1]]},"references-count":13,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2026,1]]}},"alternative-id":["10.1111\/asj.70197"],"URL":"https:\/\/doi.org\/10.1111\/asj.70197","archive":["Portico"],"relation":{},"ISSN":["1344-3941","1740-0929"],"issn-type":[{"value":"1344-3941","type":"print"},{"value":"1740-0929","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,1]]},"assertion":[{"value":"2026-03-18","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2026-05-20","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2026-05-31","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}],"article-number":"e70197"}}