title: Seasonal changes and muscle type effect on the nutritional quality of intramuscular fat in Mirandesa-PDO veal.
abstract: The influence of slaughter season and muscle type on the detailed fatty acid composition, including conjugated linoleic acid isomers, and contents of total cholesterol and lipid-soluble antioxidant vitamins (α-tocopherol and β-carotene) in Mirandesa-PDO veal was assessed. Mirandesa purebred calves (n=29) were raised in a traditional production semi-extensive system, slaughtered in late spring (June) or early autumn (October) and the longissimus lumborum and semitendinosus muscles were sampled for analysis. Although the lipid composition of PDO veal was only slightly affected by the slaughter season, it was markedly changed by the muscle type. However, PDO veal had values of pasture-fed cattle for lipid grass intake indicators, in both seasons and muscles. From a human health standpoint, intramuscular fat in Mirandesa-PDO veal has a high nutritional value throughout the year, with favorable ratios of n-6/n-3 and contents of n-3 PUFA and α-tocopherol, as a result of the beneficial effects of grass feeding.
authors: CIISA, Faculdade de Medicina Veterinária, Universidade Técnica de Lisboa, Avenida da Universidade Técnica, Pólo Universitário do Alto da Ajuda, 1300-477 Lisboa, Portugal.
authors: José M
authors: JM
authors: Pestana
authors: Ana S H
authors: AS
authors: Costa
authors: Susana P
authors: SP
authors: Alves
authors: Susana V
authors: SV
authors: Martins
authors: Cristina M
authors: CM
authors: Alfaia
authors: Rui J B
authors: RJ
authors: Bessa
authors: José A M
authors: JA
authors: Prates
mesh_terms: D000821:Animal Feed; D000818:Animals; D002417:Cattle; D002784:Cholesterol / Q000032:analysis; D004032:Diet / Q000662:veterinary*; D005227:Fatty Acids / Q000032:analysis; D044243:Linoleic Acids, Conjugated / Q000032:analysis*; D008460:Meat / Q000032:analysis*; D018482:Muscle, Skeletal / Q000737:chemistry*; D012621:Seasons; D024502:alpha-Tocopherol / Q000032:analysis; D019207:beta Carotene / Q000032:analysis
chemical_list: D005227:Fatty Acids; D044243:Linoleic Acids, Conjugated; D019207:beta Carotene; C046938:9,11-linoleic acid; D002784:Cholesterol; D024502:alpha-Tocopherol