title: Different dietary protein and PUFA interventions alter the fatty acid concentrations, but not the meat quality, of porcine muscle.
abstract: The present study investigated the effect of a reduced protein diet in combination with different vegetable oils (sunflower seed oil or linseed oil) on carcass traits, meat quality and fatty acid profile in porcine muscle. Forty male Landrace pigs were allocated into four experimental groups (each n = 8) and one control group (n = 8) at a live weight of approximately 60 kg. The pigs were fed ad libitum from 60 kg to 100 kg live weight and restricted to 2.8 kg/day until they reached 120 kg. In contrast to other studies, the intramuscular fat content (IMF) did not increase in animals of groups fed a reduced protein diet and vegetable oils. The IMF ranged between 1.2% and 1.4%. The growth performance and meat quality of the longissimus muscle was not affected by the diet, but the average daily gain (ADG) and drip loss were affected. The muscle fatty acid concentrations were significantly affected by the diet, resulting in higher n-3 FA concentrations up to 113 mg/100 g muscle and lower n-6/n-3 PUFA ratio for pigs fed linseed oil-containing high- and reduced protein diets, compared to sunflower seed oil-containing diets.
authors.affiliation: Research Unit of Muscle Biology and Growth and Genetics and Biometry, Leibniz Institute for Farm Animal Biology, Wilhelm-Stahl-Allee 2, 18196 Dummerstorf, Germany.
authors.forename: Dirk
authors.initials: D
authors.lastname: Dannenberger
authors.affiliation: Research Unit of Muscle Biology and Growth and Genetics and Biometry, Leibniz Institute for Farm Animal Biology, Wilhelm-Stahl-Allee 2, 18196 Dummerstorf, Germany.
authors.forename: Karin
authors.initials: K
authors.lastname: Nuernberg
authors.affiliation: Research Unit of Muscle Biology and Growth and Genetics and Biometry, Leibniz Institute for Farm Animal Biology, Wilhelm-Stahl-Allee 2, 18196 Dummerstorf, Germany.
authors.forename: Gerd
authors.initials: G
authors.lastname: Nuernberg
authors.affiliation: Institute of Animal Production, State Institute for Agriculture and Fishing Research, Wilhelm-Stahl-Allee 2, 18196 Dummerstorf, Germany.
authors.forename: Antje
authors.initials: A
authors.lastname: Priepke
mesh_terms: D000821:Animal Feed / Q000032:analysis; D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D001823:Body Composition / Q000187:drug effects; D001835:Body Weight / Q000187:drug effects; D004044:Dietary Proteins / Q000008:administration & dosage*; D015525:Fatty Acids, Omega-3 / Q000008:administration & dosage*; D043371:Fatty Acids, Omega-6 / Q000008:administration & dosage*; D063427:Food Quality; D008043:Linseed Oil / Q000008:administration & dosage; D008297:Male; D008460:Meat / Q000032:analysis*; D018482:Muscle, Skeletal / Q000737:chemistry / Q000187:drug effects*; D010938:Plant Oils / Q000008:administration & dosage; D000074242:Sunflower Oil; D013552:Swine / Q000378:metabolism
chemical_list: D004044:Dietary Proteins; D015525:Fatty Acids, Omega-3; D043371:Fatty Acids, Omega-6; D010938:Plant Oils; D000074242:Sunflower Oil; D008043:Linseed Oil
keywords: carcass traits; fatty acids ; linseed oil; meat quality; pig muscle; reduced protein diet; sunflower oil