{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,16]],"date-time":"2026-10-16T01:12:47Z","timestamp":1792113167311,"version":"4.4.0"},"reference-count":68,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2021,5,27]],"date-time":"2021-05-27T00:00:00Z","timestamp":1622073600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Animals"],"abstract":"<jats:p>Current protocols for gilts recommend the deposit of multiple semen doses in the cervix each 12\u201324 h after estrus detection. Our objectives were: (1) to determine the effect of buserelin and a single fixed-time artificial insemination using the new post-cervical artificial insemination technique (FTAI-PCAI) on reproductive and productive performance in gilts, and (2) to compare this protocol with conventional estrus detection and double PCAI without hormonal induction. In the control group (C; n = 240), gilts were inseminated twice (8 and 12 h from estrus onset). Gilts in the treatment group (T; n = 226) received buserelin (10 \u03bcg, intramuscular) 120 h after altrenogest treatment (18 d) and one single PCAI 30\u201333 h after buserelin administration. The groups did not differ in reproductive and production performance (p &gt; 0.05). The T group showed greater piglet birth weight and shorter estrus duration (p &lt; 0.001). Delivery batch length differed significantly depending on the season (p &lt; 0.05); the shortest length corresponded to autumn. Both groups only differed significantly in spring (p = 0.018), with a shorter length in the T group. This new FTAI-PCAI protocol with buserelin is recommended in gilts, helping with optimization of genetic diffusion, boars, and semen doses.<\/jats:p>","DOI":"10.3390\/ani11061567","type":"journal-article","created":{"date-parts":[[2021,5,27]],"date-time":"2021-05-27T11:07:02Z","timestamp":1622113622000},"page":"1567","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Single Fixed-Time Post-Cervical Insemination in Gilts with Buserelin"],"prefix":"10.3390","volume":"11","author":[{"given":"Andr\u00e9s","family":"Su\u00e1rez-Usbeck","sequence":"first","affiliation":[{"name":"Department of Animal Pathology, Agroalimentary Institute of Aragon-IA2, University of Zaragoza-CITA, C\/Miguel Servet 177, 50013 Zaragoza, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9907-2941","authenticated-orcid":false,"given":"Olga","family":"Mitjana","sequence":"additional","affiliation":[{"name":"Department of Animal Pathology, Agroalimentary Institute of Aragon-IA2, University of Zaragoza-CITA, C\/Miguel Servet 177, 50013 Zaragoza, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5026-5144","authenticated-orcid":false,"given":"Mar\u00eda Teresa","family":"Tejedor","sequence":"additional","affiliation":[{"name":"Department of Anatomy, Embryology and Animal Genetics, Genetic s Area, Faculty of Veterinary Medicine, University of Zaragoza, C\/Miguel Servet 177, 50013 Zaragoza, Spain"},{"name":"CIBER CV (University of Zaragoza\u2014IIS), Faculty of Veterinary Medicine, University of Zaragoza, C\/Miguel Servet 177, 50013 Zaragoza, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6178-9891","authenticated-orcid":false,"given":"Cristina","family":"Bonastre","sequence":"additional","affiliation":[{"name":"Department of Animal Pathology, Agroalimentary Institute of Aragon-IA2, University of Zaragoza-CITA, C\/Miguel Servet 177, 50013 Zaragoza, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jorge","family":"Sistac","sequence":"additional","affiliation":[{"name":"Granja Fabardo (Mazana Grupo Empresarial), 22480 Capella, Huesca, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Antonio","family":"Ubiergo","sequence":"additional","affiliation":[{"name":"Semen Costean, CIA, 22312 Costean, Huesca, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mar\u00eda Victoria","family":"Falceto","sequence":"additional","affiliation":[{"name":"Department of Animal Pathology, Agroalimentary Institute of Aragon-IA2, University of Zaragoza-CITA, C\/Miguel Servet 177, 50013 Zaragoza, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2021,5,27]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"85","DOI":"10.1111\/rda.12524","article-title":"Advances in Breeding Management and Use of Ovulation Induction for Fixed-time AI","volume":"50","author":"Kirkwood","year":"2015","journal-title":"Reprod. 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