124413 20241125101133.0 doi 10.3390/ani13020280 sideral 132855 ART-2023-132855 eng Contreras-Solís, Ignacio Effect of strategic supplementation of dietary by-pass linseed oil on fertility and milk quality in sarda ewes 2023 Access copy available to the general public Unrestricted The aim of the present study was to assess whether the strategic supplementation of bypass LO can enhance reproductive indexes—fertility, lambing rate, and prolificacy—in dairy Sarda ewes at the end of lactation. To assess whether LO supplementation leads to the adsorptions of PUFAs and their subsequent utilization by the body tissues, milk composition and fatty acid content were analyzed. Forty-eight ewes were assigned to the following groups: the control group (CT; N = 24), fed with a control diet without LO; and the treatment group (LO; N = 24), fed with a diet supplemented with LO (10.8 g/ewe/day). Both diets had similar crude protein and energy levels and were offered for 38 days (−21 to +17 days after artificial insemination). The trial included an adaptation period (7 days) followed by a regular supplementation (31 days) period. Estrus synchronization was induced in all the ewes using an intravaginal sponge and equine chorionic gonadotropin. Fifty-five hours after pessaries withdrawal, all ewes were inseminated using the cervical route and fresh semen. Cholesterol (p < 0.01), high-density lipoprotein (p < 0.001), and triglyceride (p < 0.05) levels in plasma were higher in the LO group. Plasmatic levels of non-esterified fatty acids were lower in the LO group after the end of the supplementation period (p < 0.05). Milk unsaturated fatty acids (UFAs), monounsaturated fatty acids (MUFAs), total polyunsaturated fatty acids (PUFAs), PUFAs omega 3 (PUFAs-ω3) and 6 (PUFAs-ω6), and trans fatty acids were higher in the LO group (p < 0.001), while saturated fatty acids (SFAs) were higher in the CT group during the supplementation period (p < 0.001). Three days after the end of the supplementation period, the content of milk UFAs (p < 0.05), PUFAs (p < 0.001), MUFAs, and PUFAs-ω6 (p < 0.01) were still higher in the LO group. whereas SFA was higher in the CT group (p < 0.01). There was no difference between groups in terms of ovulation rate, progesterone levels in plasma, fertility rate, prolificacy, and total reproductive wastage. However, the total area of luteal tissue was higher in the LO group (p < 0.01). Results obtained demonstrated that LO supplementation exerts a positive role in corpus luteum size at the onset of the peri-implantation period in Sarda dairy ewes. Additionally, the results obtained in the present study showed that the use of dietary bypass LO affects lipid metabolites in plasma and milk fatty acid profiles, demonstrating the ALA uptake by body tissues. info:eu-repo/grantAgreement/EC/H2020/832326/EU/Effect of polyinsatured fatty acids omega-3 (PUFAS n-3) supplementation during early embryo development on embryo viability in (mammals) sheep./NUTREPHEALTH This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 832326-NUTREPHEALTH info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 2.7 2023 VETERINARY SCIENCES 16 / 167 = 0.096 2023 Q1 T1 AGRICULTURE, DAIRY & ANIMAL SCIENCE 10 / 80 = 0.125 2023 Q1 T1 0.698 2023 Veterinary (miscellaneous) 2023 Q1 Animal Science and Zoology 2023 Q1 4.9 2023 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Porcu, Cristian Sotgiu, Francesca D. Chessa, Fabrizio Pasciu, Valeria Dattena, Maria Caredda, Marco Abecia, José Alfonso Universidad de Zaragoza (orcid)0000-0003-2827-3054 Molle, Giovanni Berlinguer, Fiammetta 2008 700 Universidad de Zaragoza Dpto. Produc.Animal Cienc.Ali. Área Producción Animal 13, 2 (2023), 280 [13 pp] Animals (Basel) Animals 2076-2615 794919 http://zaguan.unizar.es/record/124413/files/texto_completo.pdf Versión publicada 2954402 http://zaguan.unizar.es/record/124413/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:124413 articulos driver 2024-11-22-11:59:38 ARTICLE