title: Effects of linseed and quercetin added to the diet of fattening lambs on the fatty acid profile and lipid antioxidant status of meat samples.
abstract: Thirty-two Merino lambs fed barley straw and a concentrate formulated either with palm oil (CTRL group) or with linseed (+LS group), both alone or supplemented with quercetin (+QCT group or +LS+QCT group) were used to assess the effects of these dietary supplements on meat quality attributes. After being slaughtered, the longissimus thoracis muscles were used to study the fatty acid (FA) profile in detail, whilst longissimus lumborum slices were stored under refrigerated conditions to determine the lipid stability. Linseed increased the content of highly unsaturated n-3 long-chain fatty acid (20:5n-3; 22:5n-3; 22:6n-3). Interestingly, a significant increment of rumenic acid content (9c,11t-18:2) was observed when this seed was administered together with dietary quercetin. Moreover, the feeding of quercetin resulted in a reduction in the proportion of saturated FA and a decrease in lipid peroxidation of meat when the lambs were fed linseed. In conclusion, from both a nutritional and a commercial (shelf-life) point of view, it may be useful to include a source of quercetin when lambs are fed linseed diets.
authors.affiliation: Instituto de Ganadería de Montaña, CSIC-Universidad de León, Finca Marzanas, E-24346 Grulleros, León, Spain. Electronic address: sonia.andres@eae.csic.es.
authors.forename: S
authors.initials: S
authors.lastname: Andrés
authors.affiliation: Instituto de Ganadería de Montaña, CSIC-Universidad de León, Finca Marzanas, E-24346 Grulleros, León, Spain.
authors.forename: L
authors.initials: L
authors.lastname: Morán
authors.affiliation: LACTIKER Research Group, Lascaray Research Centre, University of the Basque Country (UPV-EHU), Avda. Miguel de Unamuno 3, 01006 Vitoria-Gasteiz, Spain.
authors.forename: N
authors.initials: N
authors.lastname: Aldai
authors.affiliation: Instituto de Ganadería de Montaña, CSIC-Universidad de León, Finca Marzanas, E-24346 Grulleros, León, Spain.
authors.forename: M L
authors.initials: ML
authors.lastname: Tejido
authors.affiliation: Department of Agricultural, Food and Nutritional Science, University of Alberta, Lacombe Research Centre, 6000 C&E Trail, Lacombe, Alberta T4L 1W1, Canada.
authors.forename: N
authors.initials: N
authors.lastname: Prieto
authors.affiliation: Instituto Tecnológico Agrario, Junta de Castilla y León, Finca Zamadueñas, Ctra. Burgos, km. 119, E-47071 Valladolid Spain.
authors.forename: R
authors.initials: R
authors.lastname: Bodas
authors.affiliation: Instituto de Ganadería de Montaña, CSIC-Universidad de León, Finca Marzanas, E-24346 Grulleros, León, Spain.
authors.forename: F J
authors.initials: FJ
authors.lastname: Giráldez
mesh_terms: D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D000975:Antioxidants / Q000494:pharmacology*; D004032:Diet; D019587:Dietary Supplements; D005227:Fatty Acids / Q000378:metabolism*; D015525:Fatty Acids, Omega-3 / Q000378:metabolism; D019597:Flax; D044243:Linoleic Acids, Conjugated / Q000378:metabolism; D015227:Lipid Peroxidation; D008297:Male; D008460:Meat / Q000032:analysis*; D018482:Muscle, Skeletal / Q000378:metabolism; D010936:Plant Extracts / Q000494:pharmacology; D011794:Quercetin / Q000494:pharmacology*; D012034:Refrigeration; D012639:Seeds; D034561:Sheep, Domestic
chemical_list: D000975:Antioxidants; D005227:Fatty Acids; D015525:Fatty Acids, Omega-3; D044243:Linoleic Acids, Conjugated; D010936:Plant Extracts; C046938:9,11-linoleic acid; D011794:Quercetin
keywords: Antioxidants; Fatty acids; Linseed; Meat; Quercetin; TBARS