title: Dietary inclusion of tomato pomace improves meat oxidative stability of young pigs.
abstract: The aim of this study was to assess the nutritional effect of tomato pomace, in combination with two distinct fat sources (lard or soya bean oil), on longissimus lumborum muscle, subcutaneous fat and liver of young pigs. Forty male pigs of 4 weeks old were randomly assigned to four dietary treatments using two fibre sources (wheat bran or 5.0% tomato pomace) and two fat sources (lard or soya bean oil), in a 2 × 2 factorial design for a 5-week trial. Tomato pomace did not improve colour, fatty acid profile, cholesterol content or lipid oxidation, nor did it yield detectable levels in lycopene or β-carotene in the meat (p > 0.05). However, a positive increase in α-tocopherol content of meat and liver was observed in pigs fed tomato pomace (p < 0.05). Compared with lard, soya bean oil increased MUFA and PUFA proportions and decreased the percentage of SFA (p < 0.05). Our results indicate that 5.0% of tomato pomace increases pork oxidative stability and that 5.0% of soya bean oil, compared with lard, improves its nutritional quality.
authors.affiliation: LEAF, Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, Lisboa, Portugal.
authors.forename: C S
authors.initials: CS
authors.lastname: Correia
authors.affiliation: CIISA, Faculdade de Medicina Veterinária, Universidade de Lisboa, Avenida da Universidade Técnica, Alto da Ajuda, Lisboa, Portugal.
authors.forename: C M
authors.initials: CM
authors.lastname: Alfaia
authors.affiliation: CIISA, Faculdade de Medicina Veterinária, Universidade de Lisboa, Avenida da Universidade Técnica, Alto da Ajuda, Lisboa, Portugal.
authors.forename: M S
authors.initials: MS
authors.lastname: Madeira
authors.affiliation: CIISA, Faculdade de Medicina Veterinária, Universidade de Lisboa, Avenida da Universidade Técnica, Alto da Ajuda, Lisboa, Portugal.
authors.forename: P A
authors.initials: PA
authors.lastname: Lopes
authors.affiliation: LEAF, Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, Lisboa, Portugal.
authors.forename: T J S
authors.initials: TJS
authors.lastname: Matos
authors.affiliation: LEAF, Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, Lisboa, Portugal.
authors.forename: L F
authors.initials: LF
authors.lastname: Cunha
authors.affiliation: CIISA, Faculdade de Medicina Veterinária, Universidade de Lisboa, Avenida da Universidade Técnica, Alto da Ajuda, Lisboa, Portugal.
authors.forename: J A M
authors.identifier: http://orcid.org/0000-0003-1032-5987
authors.initials: JAM
authors.lastname: Prates
authors.affiliation: LEAF, Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, Lisboa, Portugal.
authors.forename: J P B
authors.initials: JPB
authors.lastname: Freire
mesh_terms: D000821:Animal Feed / Q000032:analysis*; D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D004032:Diet / Q000662:veterinary*; D005227:Fatty Acids / Q000737:chemistry; D015227:Lipid Peroxidation; D018551:Solanum lycopersicum; D008460:Meat / Q000032:analysis*; D010084:Oxidation-Reduction; D013552:Swine / Q000502:physiology
chemical_list: D005227:Fatty Acids
keywords: cholesterol; fatty acids; lycopene; pork; vitamin E