149035 20250124153131.0 doi 10.3390/ani11061567 sideral 127270 ART-2021-127270 eng Suárez-Usbeck, A. Single fixed-time post-cervical insemination in gilts with buserelin 2021 Current protocols for gilts recommend the deposit of multiple semen doses in the cervix each 12–24 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 µg, intramuscular) 120 h after altrenogest treatment (18 d) and one single PCAI 30–33 h after buserelin administration. The groups did not differ in reproductive and production performance (p > 0.05). The T group showed greater piglet birth weight and shorter estrus duration (p < 0.001). Delivery batch length differed significantly depending on the season (p < 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. © 2021 by the authors. Licensee MDPI, Basel, Switzerland. Access copy available to the general public Unrestricted info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 3.231 2021 VETERINARY SCIENCES 16 / 145 = 0.11 2021 Q1 T1 AGRICULTURE, DAIRY & ANIMAL SCIENCE 13 / 62 = 0.21 2021 Q1 T1 0.61 2021 Veterinary (miscellaneous) 2021 Q1 Animal Science and Zoology 2021 Q1 2.7 2021 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Mitjana, O. Universidad de Zaragoza (orcid)0000-0001-9907-2941 Tejedor, M.T. Universidad de Zaragoza (orcid)0000-0001-5026-5144 Bonastre, C. Universidad de Zaragoza (orcid)0000-0001-6178-9891 Sistac, J. Ubiergo, A. Falceto, M.V. Universidad de Zaragoza (orcid)0000-0001-6964-7011 1001 420 Universidad de Zaragoza Dpto. Anatom.,Embri.Genét.Ani. Área Genética 1009 617 Universidad de Zaragoza Dpto. Patología Animal Área Medicina y Cirugía Animal 11, 6 (2021), 1567 [13 pp.] Animals (Basel) Animals 2076-2615 786960 http://zaguan.unizar.es/record/149035/files/texto_completo.pdf Versión publicada 2583082 http://zaguan.unizar.es/record/149035/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:149035 articulos driver 2025-01-24-14:49:24 ARTICLE