{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,3]],"date-time":"2026-10-03T00:36:16Z","timestamp":1790987776318,"version":"4.1.0"},"reference-count":29,"publisher":"Wiley","issue":"8","license":[{"start":{"date-parts":[[2017,7,27]],"date-time":"2017-07-27T00:00:00Z","timestamp":1501113600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"name":"New Zealand International Doctoral Research Scholarship"},{"name":"Massey University Doctoral Research Scholarship"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Aust Veterinary J"],"published-print":{"date-parts":[[2017,8]]},"abstract":"Objective<\/jats:title>The aim of this research was to study the roles of the day 0 energy balance and gonadotrophin\u2010releasing hormone (GnRH<\/jats:styled-content>) and progesterone levels on dominant follicle (DF<\/jats:styled-content>) and corpus luteum (CL<\/jats:styled-content>) development during the first 7 days of a gonadotrophin\u2013prostaglandin\u2013gonadotrophin (GPG<\/jats:styled-content>) + progesterone (P4<\/jats:styled-content>) program in anoestrous dairy cows.<\/jats:p><\/jats:sec>Methods<\/jats:title>Cows (n = 81) were allocated to one of the three treatments: (1) GPG + P4<\/jats:styled-content> (days 0 and 9, 100 \u00b5g GnRH<\/jats:styled-content>; day 0\u20137, intravaginal P4<\/jats:styled-content> device; day 7, 500 \u00b5g PGF2\u03b1<\/jats:sub><\/jats:styled-content>); (2) GPG<\/jats:styled-content> (as for treatment 1 but excluding the P4<\/jats:styled-content> device) and (3) prostaglandin + GnRH<\/jats:styled-content> + P4<\/jats:styled-content> (as for treatment 1, but excluding day 0 GnRH<\/jats:styled-content>). DF<\/jats:styled-content> and CL<\/jats:styled-content> size, plasma concentrations of insulin, insulin\u2010like growth factor\u2010I (IGF<\/jats:styled-content>\u2010I) and non\u2010esterified fatty acid (NEFA<\/jats:styled-content>) were measured on days 0 and 7.<\/jats:p><\/jats:sec>Results<\/jats:title>The proportion of cows with a CL<\/jats:styled-content> on day 7 was significantly different between groups (GPG<\/jats:styled-content>: 78%, GPG<\/jats:styled-content>+P4<\/jats:styled-content>: 69%, PGF2\u03b1<\/jats:sub><\/jats:styled-content> + GnRH<\/jats:styled-content> + P4<\/jats:styled-content>: 42%, P = 0.02). The CL<\/jats:styled-content> volume on day 7 was significantly associated with treatment, treatment by time postpartum and plasma concentrations of insulin, IGF<\/jats:styled-content>\u2010I and NEFA<\/jats:styled-content>.<\/jats:p><\/jats:sec>Conclusion<\/jats:title>In cows without a CL<\/jats:styled-content> present on day 0 of an oestrus synchronisation program, removal of the day 0 GnRH<\/jats:styled-content> treatment led to reduced CL<\/jats:styled-content> development; however, no effect of adding progesterone was found. In contrast, in cows with a CL<\/jats:styled-content> present on day 0 inclusion of a progesterone device led to a higher CL<\/jats:styled-content> volume, but removal of the first GnRH<\/jats:styled-content> injection had no effect. Response to the treatment was affected by plasma concentrations of insulin, IGF<\/jats:styled-content>\u2010I and NEFA<\/jats:styled-content>.<\/jats:p><\/jats:sec>","DOI":"10.1111\/avj.12611","type":"journal-article","created":{"date-parts":[[2017,7,27]],"date-time":"2017-07-27T10:15:14Z","timestamp":1501150514000},"page":"281-288","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Effects of GnRH<\/scp>, a progesterone\u2010releasing device, and energy balance on an oestrus synchronisation program in anoestrous dairy cows"],"prefix":"10.1111","volume":"95","author":[{"given":"SK","family":"Sahu","sequence":"first","affiliation":[{"name":"Institute of Veterinary, Animal and Biomedical Sciences Massey University Palmerston North New Zealand"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"JF","family":"Cockrem","sequence":"additional","affiliation":[{"name":"Institute of Veterinary, Animal and Biomedical Sciences Massey University Palmerston North New Zealand"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"TJ","family":"Parkinson","sequence":"additional","affiliation":[{"name":"Institute of Veterinary, Animal and Biomedical Sciences Massey University Palmerston North New Zealand"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"RA","family":"Laven","sequence":"additional","affiliation":[{"name":"Institute of Veterinary, Animal and Biomedical Sciences Massey University Palmerston North New Zealand"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2017,7,27]]},"reference":[{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.3168\/jds.S0022-0302(03)73775-8"},{"key":"e_1_2_9_3_1","doi-asserted-by":"publisher","DOI":"10.1080\/00480169.2001.36204"},{"key":"e_1_2_9_4_1","doi-asserted-by":"publisher","DOI":"10.3168\/jds.2009-2305"},{"key":"e_1_2_9_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.theriogenology.2004.04.005"},{"key":"e_1_2_9_6_1","doi-asserted-by":"publisher","DOI":"10.3168\/jds.S0022-0302(06)72333-5"},{"key":"e_1_2_9_7_1","doi-asserted-by":"publisher","DOI":"10.3168\/jds.S0022-0302(06)72466-3"},{"key":"e_1_2_9_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/0034-5288(95)90104-3"},{"key":"e_1_2_9_9_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0093-691X(99)00195-8"},{"key":"e_1_2_9_10_1","doi-asserted-by":"publisher","DOI":"10.1530\/rep.1.00735"},{"key":"e_1_2_9_11_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.anireprosci.2005.05.014"},{"key":"e_1_2_9_12_1","doi-asserted-by":"publisher","DOI":"10.1530\/rep.1.00079"},{"key":"e_1_2_9_13_1","doi-asserted-by":"publisher","DOI":"10.3168\/jds.2008-1976"},{"key":"e_1_2_9_14_1","volume-title":"Condition scoring dairy herds","author":"Macdonald KA","year":"2004"},{"key":"e_1_2_9_15_1","doi-asserted-by":"publisher","DOI":"10.3168\/jds.2011-4779"},{"key":"e_1_2_9_16_1","doi-asserted-by":"publisher","DOI":"10.1016\/0093-691X(95)00279-H"},{"key":"e_1_2_9_17_1","doi-asserted-by":"publisher","DOI":"10.1136\/vr.144.13.343"},{"key":"e_1_2_9_18_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0739-7240(02)00158-3"},{"key":"e_1_2_9_19_1","doi-asserted-by":"publisher","DOI":"10.1136\/vr.145.18.516"},{"key":"e_1_2_9_20_1","doi-asserted-by":"publisher","DOI":"10.1016\/0093-691X(94)90380-2"},{"key":"e_1_2_9_21_1","doi-asserted-by":"publisher","DOI":"10.1262\/jrd.2016-044"},{"key":"e_1_2_9_22_1","doi-asserted-by":"publisher","DOI":"10.1152\/physiolgenomics.00060.2015"},{"key":"e_1_2_9_23_1","doi-asserted-by":"publisher","DOI":"10.1530\/REP-06-0382"},{"key":"e_1_2_9_24_1","doi-asserted-by":"publisher","DOI":"10.1017\/S1751731114000937"},{"key":"e_1_2_9_25_1","first-page":"19","article-title":"Mechanisms linking the somatotropic axis with insulin: lessons from the postpartum dairy cow","volume":"64","author":"Lucy MC","year":"2004","journal-title":"Proc NZ Soc Anim Prod"},{"key":"e_1_2_9_26_1","doi-asserted-by":"publisher","DOI":"10.1071\/RD12272"},{"key":"e_1_2_9_27_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.theriogenology.2016.04.062"},{"key":"e_1_2_9_28_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.anireprosci.2003.10.005"},{"key":"e_1_2_9_29_1","doi-asserted-by":"publisher","DOI":"10.1292\/jvms.64.879"},{"key":"e_1_2_9_30_1","first-page":"101","article-title":"A case control study of anoestrum in New Zealand dairy cows","volume":"53","author":"McDougall S","year":"1993","journal-title":"Proc NZ Soc Anim Prod"}],"container-title":["Australian Veterinary Journal"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1111%2Favj.12611","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/avj.12611","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,10,2]],"date-time":"2023-10-02T04:54:02Z","timestamp":1696222442000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1111\/avj.12611"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2017,7,27]]},"references-count":29,"journal-issue":{"issue":"8","published-print":{"date-parts":[[2017,8]]}},"alternative-id":["10.1111\/avj.12611"],"URL":"https:\/\/doi.org\/10.1111\/avj.12611","archive":["Portico"],"relation":{},"ISSN":["0005-0423","1751-0813"],"issn-type":[{"value":"0005-0423","type":"print"},{"value":"1751-0813","type":"electronic"}],"subject":[],"published":{"date-parts":[[2017,7,27]]},"assertion":[{"value":"2014-06-18","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2016-10-19","order":1,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2017-07-27","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}