Vázquez Gómez, MartaGarcía Contreras, ConsolaciónAstiz Blanco, SusanaTorres Rovira, LauraPesántez Pacheco, José LuisHeras Molina, AnaGonzález de Bulnes López, AntonioProducción Científica UCH 2021UCH. Departamento de Producción y Sanidad Animal, Salud Pública Veterinaria y Ciencia y Tecnología de los Alimentos2022-01-262022-01-262021-03-22Vázquez-Gómez, M., García-Contreras, C., Astiz, S., Torres-Rovira, L., Pesantez-Pacheco, J.L., Heras-Molina, A. et al. (2021). Effects of L-Glutamine supplementation during the gestation of gilts and sows on the offspring development in a traditional swine breed. Animals, vol. 11, i. 3 (22 mar.), art. 903. DOI: https://doi.org/10.3390/ani110309032076-2615 (Electrónico)http://hdl.handle.net/10637/13351Este artículo se encuentra disponible en la siguiente URL: https://www.mdpi.com/2076-2615/11/3/903Este artículo pertenece a la sección "Pigs".En este artículo también participan: Teresa Castro Madrigal, Clemente López-Bote, Cristina Óvilo y Beatriz Isabel.The use of amino acids during pregnancy, such as glutamine (Gln), seems to be a promising strategy in selected swine breeds to improve the offspring prenatal development. The main goal of the current study was to assess the development of the offspring from parity 1–3 sows of a traditional breed, which were supplemented with 1% glutamine after Day 35 of gestation, under farm conditions. A total of 486 (288 treated) piglets from 78 (46 treated) Iberian sows were used. At birth and slaughterhouse, fatty acid composition, metabolism, and mTOR pathway gene expression were analyzed. At birth, treated newborns showed greater amounts of specific amino acids in plasma, such as glutamine, asparagine, or alanine, and Sn-3 fatty acids in cellular membranes than control newborns. The expression of genes belonging to mTOR Complex 1 was also higher in treated piglets with normal birth-weight. However, these findings did not improve productive traits at birth or following periods in litters from supplemented gilts (parity 1) or sows (parities 2–3). Thus, further research is needed to properly understand the effects of prenatal glutamine supplementation, particularly in traditional swine breeds.application/pdfesopen accessCerdos - Cría y explotación.Gestación.Amino acids in animal nutrition.Aminoácidos en nutrición animal.Fatty acids.Swine - Breeding.Pregnancy.Ácidos grasos.Artículohttps://doi.org/10.3390/ani11030903https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es