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dc.contributor.authorSarri Espinosa, Laura
dc.contributor.authorBalcells Terés, Joaquim
dc.contributor.authorSeradj, Ahmad Reza
dc.contributor.authorPena, Ramona N.
dc.contributor.authorRamírez, Gustavo A.
dc.contributor.authorTor i Naudí, Marc
dc.contributor.authorde la Fuente Oliver, Gabriel
dc.description.abstractFatty acid (FA) deposition in growing-fattening pigs is mainly based on endogenous lipid synthesis, but also direct FA incorporation from the diet. To evaluate the direct fat incorporation rates and the endogenous desaturation action of the stearoyl‐CoA desaturase (SCD) enzyme, a deu‐ terium (D)‐labeled saturated FA (d 35‐C18:0) was added to the diet. Sixteen three‐way (3W) crossbred boars, and thirty‐two purebred Duroc barrows homozygous for the SCD single nucleotide poly‐ morphism rs80912566 (16 CC/16 TT), were used. Half of the animals of each genotype belonged to the growing and fattening phases. The fractional incorporation rate (FIR) of dietary fat in growing pigs was generally higher in adipose tissues, whereas in fattening pigs it was higher in the liver. Duroc pigs exhibited lower FIRs than 3W pigs, suggesting lower rates of endogenous synthesis by 3W pigs. Real fractional unsaturation rates (FURs) increased with age by the higher FIRs in 3W pigs and the de novo synthesis pathway in Duroc genotypes. Moreover, pigs carrying the SCD_T allele showed more enhanced oleic acid biosynthesis than Duroc CC pigs. In conclusion, suitable feeding protocols should be designed for each pig type to optimize production traits, considering that the metabolic pathway of FA for its deposition may differ.
dc.description.sponsorshipThis study was a part of the Feed-a-Gene project and received funding from the EuropeanUnion’s H2020 program under National Institutes of Health (grant number 633531), as well as SpanishNational funding by the Ministry of Economy and Competitiveness (AGL2017-89289-R). L. Sarri isthe recipient of a research training grant from the Generalitat de Catalunya-European Social Funds(2019 FI_B 00416
dc.relationinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/AGL2017-89289-R/ES/EFECTO DEL TIPO PRODUCTIVO SOBRE LA EFICIENCIA DIGESTIVA, FERMENTACION INTESTINAL Y LA RELACION MICROBIOMA-METABOLOMA EN GANADO PORCINO/
dc.relation.isformatofReproducció del document publicat a:
dc.relation.ispartofAnimals, 2022, vol. 12, p. 1868
dc.rightscc-by (c) Sarri et al., 2022
dc.subjectincorporation rate
dc.subjectproducing type
dc.titleAge evolution of lipid accretion rate in boars selected for lean meat and duroc barrows

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