{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,7]],"date-time":"2026-03-07T02:58:42Z","timestamp":1772852322208,"version":"3.50.1"},"reference-count":27,"publisher":"Elsevier BV","issue":"3-4","license":[{"start":{"date-parts":[[2004,9,1]],"date-time":"2004-09-01T00:00:00Z","timestamp":1093996800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2004,9,1]],"date-time":"2004-09-01T00:00:00Z","timestamp":1093996800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/legal\/tdmrep-license"}],"content-domain":{"domain":["elsevier.com","sciencedirect.com"],"crossmark-restriction":true},"short-container-title":["Animal Reproduction Science"],"published-print":{"date-parts":[[2004,9]]},"DOI":"10.1016\/j.anireprosci.2004.02.011","type":"journal-article","created":{"date-parts":[[2004,4,23]],"date-time":"2004-04-23T05:53:05Z","timestamp":1082699585000},"page":"407-413","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":17,"title":["Early-weaned sows: altrenogest therapy, estrus, ovulation, and reproductive performance"],"prefix":"10.1016","volume":"84","author":[{"given":"Jos\u00e9 Maur\u0131\u0301cio Gon\u00e7alves dos","family":"Santos","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ivo","family":"Wentz","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fernando Pandolfo","family":"Bortolozzo","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"suffix":"Jr.","given":"Waldomiro","family":"Barioni","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"78","reference":[{"key":"10.1016\/j.anireprosci.2004.02.011_BIB1","doi-asserted-by":"crossref","first-page":"114","DOI":"10.1136\/vr.106.6.114","article-title":"Medicated early weaning to obtain pigs free from pathogens endemic in the herd of origin","volume":"106","author":"Alexander","year":"1980","journal-title":"Vet. Rec."},{"key":"10.1016\/j.anireprosci.2004.02.011_BIB2","first-page":"634","article-title":"Age au sevrage chez le porcelet: R\u00e9percussion sur la productivit\u00e9 des truies et influence sur les jeunes animaux","volume":"21","author":"Aumaitre","year":"1972","journal-title":"Journn\u00e9s. Recherch Porcine en France"},{"key":"10.1016\/j.anireprosci.2004.02.011_BIB3","doi-asserted-by":"crossref","first-page":"283","DOI":"10.2527\/1994.722283x","article-title":"Effect of delayed breeding on the endocrinology and fecundity of sows","volume":"72","author":"Clowes","year":"1994","journal-title":"J. Anim. Sci."},{"key":"10.1016\/j.anireprosci.2004.02.011_BIB4","unstructured":"Heck, A., 1999. Caracteriza\u00e7\u00e3o do momento da ovula\u00e7\u00e3o e da dura\u00e7\u00e3o do estro e do desempenho reprodutivo subseq\u00fcente em um rebanho su\u0131\u0301no. Porto Alegre Universidade Federal do Rio Grande do Sul. Disserta\u00e7\u00e3o de mestrado, p. 108."},{"key":"10.1016\/j.anireprosci.2004.02.011_BIB5","unstructured":"Heck, A., Bortolozzo, F.P., Wentz, Ivo, Martini, R.L., Stahlberg, R., Guidoni, A.L., Nagae, R., 1997. Determina\u00e7\u00e3o do momento da ovula\u00e7\u00e3o em porcas de granjas comerciais via diagn\u00f3stico ultra-sonogr\u00e1fico transcut\u00e2neo. In: Anais do VIII Congresso Brasileiro de Veterin\u00e1rios Especialistas em Su\u0131\u0301nos, pp. 333\u2013334."},{"key":"10.1016\/j.anireprosci.2004.02.011_BIB6","doi-asserted-by":"crossref","first-page":"944","DOI":"10.2527\/1996.745944x","article-title":"Relationship of weaning-to-estrus interval to timing of ovulation and fertilization in sows","volume":"74","author":"Kemp","year":"1996","journal-title":"J. Anim. Sci."},{"key":"10.1016\/j.anireprosci.2004.02.011_BIB7","unstructured":"King, V., Xue, J.L., 1996. Database benchmarking summaries for breeding herds. In: Pigchamp\u00ae 1996 Annual Report, Section I: Breeding Herds Summaries pp. 3\u201323."},{"key":"10.1016\/j.anireprosci.2004.02.011_BIB8","doi-asserted-by":"crossref","first-page":"894","DOI":"10.2460\/javma.1997.211.07.894","article-title":"Factors associated with prolonged weaning-to-mating interval among sows on farms that wean pigs early","volume":"211","author":"Koketsu","year":"1997","journal-title":"J. Am. Vet. Med. Assoc."},{"key":"10.1016\/j.anireprosci.2004.02.011_BIB9","doi-asserted-by":"crossref","first-page":"71","DOI":"10.1016\/S0378-4320(98)00088-8","article-title":"The effects of post-weaning prosgestagen treatment (regumate) of early-weaned primiparous sows on subsequent reproductive performance","volume":"52","author":"Koutsotheodoros","year":"1998","journal-title":"Anim. Reprod. Sci."},{"key":"10.1016\/j.anireprosci.2004.02.011_BIB10","doi-asserted-by":"crossref","first-page":"183","DOI":"10.1016\/0093-691X(82)90078-4","article-title":"Failure of the orally active progestin, Regumate, to Overcome Confinement-Induced Delayed Puberty in Gilts","volume":"17","author":"Kraeling","year":"1982","journal-title":"Therioginology"},{"key":"10.1016\/j.anireprosci.2004.02.011_BIB11","first-page":"185","article-title":"Effects of lactation length on weaning-to-first-service interval, first-service farrowing rate and subsequent litter size","volume":"4","author":"Mabry","year":"1996","journal-title":"Swine Health Prod."},{"key":"10.1016\/j.anireprosci.2004.02.011_BIB12","first-page":"10","article-title":"Effects of lactation length on ovulation rate and embryo survival in swine","volume":"5","author":"Marsteller","year":"1997","journal-title":"Swine Health Prod."},{"key":"10.1016\/j.anireprosci.2004.02.011_BIB13","doi-asserted-by":"crossref","first-page":"285","DOI":"10.1111\/j.1439-0442.1995.tb00379.x","article-title":"Ovulation as determined by transrectal ultrasonography in multiparous sows: relationships with oestrous symptoms and hormonal profiles","volume":"42","author":"Mburu","year":"1995","journal-title":"J. Vet. Med. Assoc."},{"key":"10.1016\/j.anireprosci.2004.02.011_BIB14","doi-asserted-by":"crossref","first-page":"255","DOI":"10.1136\/vr.92.10.255","article-title":"The effect of short lactation on the productivity of sows","volume":"92","author":"Pay","year":"1973","journal-title":"Vet. Rec."},{"issue":"Suppl.","key":"10.1016\/j.anireprosci.2004.02.011_BIB15","first-page":"193","article-title":"Endocrine manipulation - toxicological frontiers","volume":"45","author":"Peters","year":"1992","journal-title":"J. Reprod. Fertil."},{"key":"10.1016\/j.anireprosci.2004.02.011_BIB16","unstructured":"Santos, J. M. G., 1999. Desempenho Reprodutivo de porcas desmamadas aos 9-10 dias de lacta\u00e7\u00e3o, submetidas ou n\u00e3o \u00e0 terapia hormonal com altrenogest. Porto Alegre:Universidade Federal do Rio Grande do Sul. Disserta\u00e7\u00e3o de mestrado, p. 108."},{"key":"10.1016\/j.anireprosci.2004.02.011_BIB17","unstructured":"Sas Institute Inc., 1996. Statistical Analysis System User\u2019s Guide, Cary, NC, USA."},{"key":"10.1016\/j.anireprosci.2004.02.011_BIB18","first-page":"38","article-title":"Pharmacological control of reproduction in pigs","volume":"32","author":"Scott","year":"1994","journal-title":"J. Br. Vet. Soc.: Pig J."},{"key":"10.1016\/j.anireprosci.2004.02.011_BIB19","doi-asserted-by":"crossref","first-page":"862","DOI":"10.2527\/jas1958.173862x","article-title":"The rate and economy of pig gains and the reproductive behavior in sows when litters are weaned at 10 days, 21 days or 56 days of age","volume":"17","author":"Self","year":"1958","journal-title":"J. Anim. Sci."},{"key":"10.1016\/j.anireprosci.2004.02.011_BIB20","doi-asserted-by":"crossref","first-page":"633","DOI":"10.1530\/jrf.0.1010633","article-title":"Periovulatory profiles of oestradiol, LH and progesterone in relation to oestrus and embryo mortality in multiparous sows using transrectal ultrasonography to detect ovulation","volume":"101","author":"Soede","year":"1994","journal-title":"J. Reprod. Fertil."},{"key":"10.1016\/j.anireprosci.2004.02.011_BIB21","doi-asserted-by":"crossref","first-page":"1043","DOI":"10.1016\/0093-691X(93)90005-P","article-title":"In synchronized pigs, the duration of ovulation is not affected by insemination and is not a determinant for early embryonic diversity","volume":"39","author":"Soede","year":"1993","journal-title":"Therioginology"},{"key":"10.1016\/j.anireprosci.2004.02.011_BIB22","doi-asserted-by":"crossref","first-page":"480","DOI":"10.2527\/jas1985.612480x","article-title":"Altrenogest and fat for summer breeding of primiparous sows","volume":"61","author":"Stevenson","year":"1985","journal-title":"J. Anim. Sci."},{"key":"10.1016\/j.anireprosci.2004.02.011_BIB23","doi-asserted-by":"crossref","first-page":"100","DOI":"10.2527\/jas1974.381100x","article-title":"Effect of lactation duration on reproductive performance of sows","volume":"38","author":"Svajgr","year":"1974","journal-title":"J. Anim. Sci."},{"key":"10.1016\/j.anireprosci.2004.02.011_BIB24","doi-asserted-by":"crossref","first-page":"3062","DOI":"10.2527\/1995.73103062x","article-title":"Evaluation of response to hormonal therapy in prepubertal gilts of different genetic lines","volume":"73","author":"Tilton","year":"1995","journal-title":"J. Anim. Sci."},{"key":"10.1016\/j.anireprosci.2004.02.011_BIB25","first-page":"113","article-title":"Effect of lactation length of the sow on plasma progesterone, oestradiol 17-\u03b2 and embryonic survival","volume":"38","author":"Varley","year":"1984","journal-title":"J. Anim. Prod."},{"key":"10.1016\/j.anireprosci.2004.02.011_BIB26","doi-asserted-by":"crossref","first-page":"433","DOI":"10.1111\/j.1439-0531.1994.tb00590.x","article-title":"The onset of heat after weaning, heat duration, and ovulation as major effects in AI timing in sows","volume":"29","author":"Weitze","year":"1994","journal-title":"Reprod. Domest. Anim."},{"key":"10.1016\/j.anireprosci.2004.02.011_BIB27","doi-asserted-by":"crossref","first-page":"935","DOI":"10.2460\/javma.1997.210.07.935","article-title":"Association between lactation length and sow reproductive performance and longevity","volume":"210","author":"Xue","year":"1997","journal-title":"J. Am. Vet. Med. Assoc."}],"container-title":["Animal Reproduction Science"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0378432004000491?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0378432004000491?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2025,10,8]],"date-time":"2025-10-08T06:02:48Z","timestamp":1759903368000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S0378432004000491"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2004,9]]},"references-count":27,"journal-issue":{"issue":"3-4","published-print":{"date-parts":[[2004,9]]}},"alternative-id":["S0378432004000491"],"URL":"https:\/\/doi.org\/10.1016\/j.anireprosci.2004.02.011","relation":{},"ISSN":["0378-4320"],"issn-type":[{"value":"0378-4320","type":"print"}],"subject":[],"published":{"date-parts":[[2004,9]]},"assertion":[{"value":"Elsevier","name":"publisher","label":"This article is maintained by"},{"value":"Early-weaned sows: altrenogest therapy, estrus, ovulation, and reproductive performance","name":"articletitle","label":"Article Title"},{"value":"Animal Reproduction Science","name":"journaltitle","label":"Journal Title"},{"value":"https:\/\/doi.org\/10.1016\/j.anireprosci.2004.02.011","name":"articlelink","label":"CrossRef DOI link to publisher maintained version"},{"value":"converted-article","name":"content_type","label":"Content Type"},{"value":"Copyright \u00a9 2004 Elsevier B.V. All rights reserved.","name":"copyright","label":"Copyright"}]}}