title: Selective mobilization of fatty acids in adipose tissue of heavy pigs.
abstract: The mobilization of fatty acids during food deprivation is a selective process studied in different species (humans, rodents, birds, viverrids). The aim of this work was to study the effect of fasting on selective mobilization in commercial pigs. A total of 16 barrows (Large White×Landrace (167 kg±12.5 kg live weight) were subdivided into two homogeneous groups, one subjected to 12 h and the other to 60 h of fasting (fasting time) before slaughtering. For each pig inner and outer backfat layer were sampled at slaughter and at ham trimming 24 h later (sampling time). Increasing the fasting time and the sampling time after slaughter caused an increase in the amount of free fatty acids in both layers. Therefore it can be argued that during fasting lipolysis is stimulated and remains active also after slaughtering. The factors that stimulate lipolysis determine a greater mobilization of unsaturated fatty acids than saturated ones. Thus fasting time may influence the suitability of pork for processing and conservation, since free fatty acids are more suitable for oxidation than the esterified ones.
authors.affiliation: 1C.R.A. Consiglio per la ricerca e la sperimentazione in agricoltura,Unità di ricerca per la suinicoltura,Via Beccastecca 345,41018 S. Cesario s. P. (MO),Italy.
authors.forename: D
authors.initials: D
authors.lastname: Bochicchio
authors.affiliation: 1C.R.A. Consiglio per la ricerca e la sperimentazione in agricoltura,Unità di ricerca per la suinicoltura,Via Beccastecca 345,41018 S. Cesario s. P. (MO),Italy.
authors.forename: M
authors.initials: M
authors.lastname: Comellini
authors.affiliation: 2Ministero delle Politiche Agricole Alimentari e Forestali,Ispettorato Centrale Repressione Frodi,Via Cavedone 29,41100 Modena,Italy.
authors.forename: P
authors.initials: P
authors.lastname: Lambertini
authors.affiliation: 1C.R.A. Consiglio per la ricerca e la sperimentazione in agricoltura,Unità di ricerca per la suinicoltura,Via Beccastecca 345,41018 S. Cesario s. P. (MO),Italy.
authors.forename: G
authors.initials: G
authors.lastname: Marchetto
authors.affiliation: 1C.R.A. Consiglio per la ricerca e la sperimentazione in agricoltura,Unità di ricerca per la suinicoltura,Via Beccastecca 345,41018 S. Cesario s. P. (MO),Italy.
authors.forename: G
authors.initials: G
authors.lastname: Della Casa
mesh_terms: D000273:Adipose Tissue / Q000378:metabolism*; D000818:Animals; D001692:Biological Transport; D005215:Fasting; D005231:Fatty Acids, Unsaturated / Q000378:metabolism*; D005260:Female; D006868:Hydrolysis; D008066:Lipolysis; D008297:Male; D008460:Meat; D011897:Random Allocation; D013552:Swine / Q000502:physiology*
chemical_list: D005231:Fatty Acids, Unsaturated