{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,26]],"date-time":"2026-10-26T22:38:19Z","timestamp":1793054299159,"version":"4.5.0"},"reference-count":23,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2014,9,24]],"date-time":"2014-09-24T00:00:00Z","timestamp":1411516800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"name":"Funda\u00ef\u00bf\u00bd\u00ef\u00bf\u00bdo de Amparo \u00ef\u00bf\u00bd Pesquisa do Estado de S\u00ef\u00bf\u00bdo Paulo - FAPESP","award":["2005\/54866-2"],"award-info":[{"award-number":["2005\/54866-2"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Reprod Domestic Animals"],"published-print":{"date-parts":[[2014,12]]},"abstract":"<jats:title>Contents<\/jats:title><jats:p>The aim of this study was to evaluate the reproductive performance of three parities of gilts treated or not treated with gonadotropin to induce puberty. Sixty gilts received 600\u00a0IU of equine chorionic gonadotropin (<jats:styled-content style=\"fixed-case\">eCG<\/jats:styled-content>) followed by 2.5\u00a0mg of porcine luteinizing hormone (LH) 72\u00a0h later. Fifty\u2010nine other gilts were exposed only to a mature boar for 15\u00a0min twice daily. Artificial insemination (AI) was performed at 0, 12 and 24\u00a0h after the detection of oestrus, and gestation was confirmed by ultrasound after 35\u00a0days. Sows were inseminated at the first post\u2010weaning oestrus. The total numbers of piglets born, piglets born alive, stillborn, mummified foetuses, as well as pregnancy and farrowing rates were evaluated for each of the three parities. Culling rates, farrowing intervals and weaning\u2010to\u2010oestrous intervals (WEI) were also analysed. Mean age at puberty and oestrous manifestation were not significantly different between treatments (p\u00a0=\u00a00.0639; 179.20\u00a0\u00b1\u00a017.52 compared with 173.96\u00a0\u00b1\u00a016.94, 91.66% compared with 94.92%) across the experimental period. However, females that underwent puberty induction showed modest increases both in the number of total pigs born and in the number of piglets born alive. In conclusion, puberty induction through exogenous gonadotropin administration in field conditions did not induce a more concentrated first oestrous manifestation, but trended to a modest increase in the number of pigs born alive in the first parity and a reduced culling rate during the first gestation.<\/jats:p>","DOI":"10.1111\/rda.12415","type":"journal-article","created":{"date-parts":[[2014,9,24]],"date-time":"2014-09-24T05:30:24Z","timestamp":1411536624000},"page":"964-969","source":"Crossref","is-referenced-by-count":3,"title":["Gonadotropin\u2010induced Puberty Does Not Impair Reproductive Performance of Gilts over Three Parities"],"prefix":"10.1111","volume":"49","author":[{"given":"OHO","family":"Eckhardt","sequence":"first","affiliation":[{"name":"Laboratory of Swine Research School of Veterinary Medicine and Animal Science University of Sao Paulo Pirassununga 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