{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,26]],"date-time":"2026-09-26T01:46:53Z","timestamp":1790387213338,"version":"4.1.0"},"reference-count":26,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2016,1,27]],"date-time":"2016-01-27T00:00:00Z","timestamp":1453852800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Reprod Domestic Animals"],"published-print":{"date-parts":[[2016,4]]},"abstract":"<jats:title>Contents<\/jats:title><jats:p>To evaluate factors contributing to fertility of thoroughbred mares, data from 3743 oestrous periods of 2385 mares were collected on a large thoroughbred farm in Ireland. Fourteen stallions (mean age 8.3\u00a0years; range 4\u201315\u00a0years) had bred 2385 mares (mean age 9.4\u00a0years; range 3\u201324\u00a0years). Maiden mares accounted for 12%, mares with a foal at foot for 64%, and barren, slipped or rested mares for 24% of the total. The mean pregnancy rate per cycle was 67.8% (68.6% in year 1 and 66.9% in year 2). Backward stepwise multivariable logistic regression analysis was utilized to develop two models to evaluate mare factors, including mare age, reproductive status, month of foaling, dystocia, month of cover, foal heat, cycle number, treatments, walk\u2010in status and stallion factors including stallion identity, stallion age, shuttle status, time elapsed between covers and high stallion usage on the per cycle pregnancy rate and pregnancy loss. Old age (p\u00a0&lt;\u00a00.001) and cover within 20\u00a0days post\u2010partum (p\u00a0&lt;\u00a00.003) were associated with lowered pregnancy rates. High mare age (p\u00a0&lt;\u00a00.05) and barren, slipped or rested reproductive status (p\u00a0=\u00a00.05) increased the likelihood of pregnancy loss. Uterine inflammation or infection, if appropriately treated, did not affect fertility. Only high usage of stallions (used more than 21 times in previous week) was associated with lowered (p\u00a0=\u00a00.009) pregnancy rates. However, shuttle stallions were more likely to have increased (p\u00a0=\u00a00.035) pregnancy survival, perhaps reflecting a bias in stallion selection. In conclusion, mare age exerted the greatest influence on fertility; nonetheless, thoroughbreds can be effectively managed to achieve high reproductive performance in a commercial setting.<\/jats:p>","DOI":"10.1111\/rda.12655","type":"journal-article","created":{"date-parts":[[2016,1,27]],"date-time":"2016-01-27T05:58:43Z","timestamp":1453874323000},"page":"181-187","source":"Crossref","is-referenced-by-count":48,"title":["Key Factors Affecting Reproductive Success of Thoroughbred Mares and Stallions on\u00a0a Commercial Stud Farm"],"prefix":"10.1111","volume":"51","author":[{"given":"EA","family":"Lane","sequence":"first","affiliation":[{"name":"Centre for Veterinary Epidemiology and Risk Analysis University College Dublin Belfield Dublin 4 Ireland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"MLJ","family":"Bijnen","sequence":"additional","affiliation":[{"name":"UCD School of Veterinary Medicine University College Dublin Belfield Dublin 4 Ireland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"M","family":"Osborne","sequence":"additional","affiliation":[{"name":"Forenaghts Stud Naas Co Kildare Ireland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"SJ","family":"More","sequence":"additional","affiliation":[{"name":"Centre for Veterinary Epidemiology and Risk Analysis University College Dublin Belfield Dublin 4 Ireland"},{"name":"UCD School of Veterinary Medicine University College Dublin Belfield Dublin 4 Ireland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"ISF","family":"Henderson","sequence":"additional","affiliation":[{"name":"Newmarket Equine Hospital Suffolk UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"P","family":"Duffy","sequence":"additional","affiliation":[{"name":"Lyons Research Farm University College Dublin Newcastle Co. Dublin Ireland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"MA","family":"Crowe","sequence":"additional","affiliation":[{"name":"UCD School of Veterinary Medicine University College Dublin Belfield Dublin 4 Ireland"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2016,1,27]]},"reference":[{"key":"e_1_2_6_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.mad.2008.09.004"},{"key":"e_1_2_6_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.vetimm.2008.10.323"},{"key":"e_1_2_6_4_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.2042-3306.2011.00525.x"},{"key":"e_1_2_6_5_1","doi-asserted-by":"publisher","DOI":"10.2746\/042516407X1737581"},{"key":"e_1_2_6_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jevs.2010.05.005"},{"key":"e_1_2_6_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.theriogenology.2011.10.034"},{"key":"e_1_2_6_8_1","doi-asserted-by":"publisher","DOI":"10.2746\/042516409X456068"},{"key":"e_1_2_6_9_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1751-0813.1993.tb07979.x"},{"key":"e_1_2_6_10_1","doi-asserted-by":"publisher","DOI":"10.1016\/0093-691X(92)90108-4"},{"key":"e_1_2_6_11_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0378-4320(00)00192-5"},{"key":"e_1_2_6_12_1","unstructured":"DukesA 2013:Analysis of the economic impact of the Irish Thoroughbred IndustryOctober 2013. Commissioned by the Irish Thoroughbred Breeder's Association. Available:http:\/\/www.itba.info\/wp-content\/uploads\/2013\/07\/Dukes-Report-II-October-2013-Update.pdf(accessed 1\u00a0April 2013)."},{"key":"e_1_2_6_13_1","volume-title":"Reproductive Biology in the Mare: Basic and Applied Aspects","author":"Ginther OJ","year":"1992"},{"key":"e_1_2_6_14_1","first-page":"161","article-title":"Factors influencing pregnancy and pregnancy loss on one thoroughbred farm","volume":"39","author":"Hearn P","year":"1993","journal-title":"Proc Am Assoc Equine Pract"},{"key":"e_1_2_6_15_1","first-page":"37","volume-title":"Horse Racing Ireland Fact\u2010book 2012","author":"Horse Racing Ireland","year":"2013"},{"key":"e_1_2_6_16_1","doi-asserted-by":"publisher","DOI":"10.1002\/0471722146"},{"key":"e_1_2_6_17_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.theriogenology.2006.04.006"},{"key":"e_1_2_6_18_1","doi-asserted-by":"publisher","DOI":"10.1051\/rnd:2004055"},{"key":"e_1_2_6_19_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.2042-3292.2005.tb00335.x"},{"key":"e_1_2_6_20_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.2042-3306.1979.tb01359.x"},{"key":"e_1_2_6_21_1","doi-asserted-by":"publisher","DOI":"10.2746\/042516402776181222"},{"key":"e_1_2_6_22_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1751-0813.2010.00565.x"},{"key":"e_1_2_6_23_1","first-page":"545","article-title":"The effect of the incidence and depth of intra\u2010uterine fluid in early dioestrus on pregnancy rates in mares","volume":"13","author":"Newcombe JR","year":"1997","journal-title":"Pferdeheilkunde"},{"key":"e_1_2_6_24_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0737-0806(98)80113-5"},{"key":"e_1_2_6_25_1","first-page":"19","article-title":"The relationship between intraluminal uterine fluid and pregnancy rate in the mare","volume":"18","author":"Pycock JF","year":"1996","journal-title":"Equine Pract"},{"key":"e_1_2_6_26_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.theriogenology.2007.05.050"},{"key":"e_1_2_6_27_1","unstructured":"SandersonMW AllenWR 1987:Reproductive Efficiency of Thoroughbred Mares in the United Kingdom. In:HuntingtonT(ed.) Proceedings of the 9th Bain Fallon Memorial Lectures AEVA Sydney pp.31\u201341."}],"container-title":["Reproduction in Domestic Animals"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1111%2Frda.12655","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/rda.12655","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,9,18]],"date-time":"2023-09-18T06:36:21Z","timestamp":1695018981000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1111\/rda.12655"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2016,1,27]]},"references-count":26,"journal-issue":{"issue":"2","published-print":{"date-parts":[[2016,4]]}},"alternative-id":["10.1111\/rda.12655"],"URL":"https:\/\/doi.org\/10.1111\/rda.12655","archive":["Portico"],"relation":{},"ISSN":["0936-6768","1439-0531"],"issn-type":[{"value":"0936-6768","type":"print"},{"value":"1439-0531","type":"electronic"}],"subject":[],"published":{"date-parts":[[2016,1,27]]}}}