Individual-level raw data on growth performance, carcass characteristics, meat quality, fatty acid profile and antioxidant status of pigs fed complete diets supplemented with a linseed–apple pomace–milk thistle mixture

The study evaluated the effects of a dietary mixture (LAM) composed of linseed (60%), apple pomace (5%), and milk thistle seeds (0.5%) with extruded corn as a carrier on growth performance, carcass traits, fatty acid composition, oxidative stability, immune response, and meat quality parameters in fattening pigs. The experiment was conducted on 90 F1 hybrid pigs (PIC genetics; 45 females and 45 males; initial body weight ~31 kg). Animals were randomly allocated to three dietary treatments (30 pigs per group): CON – standard grower and finisher diets without LAM supplementation LAM-F – 5% LAM supplementation during the finisher phase only LAM-GF – 5% LAM supplementation during both grower and finisher phases The feeding trial lasted 100 days (48-day grower phase and 52-day finisher phase). Growth performance data were recorded throughout the experiment. At the end of the trial, 14 pigs per group (7 females and 7 males; total n = 42) were slaughtered for detailed carcass evaluation, meat quality assessment, fatty acid profiling (muscle, serum, feed), and biochemical, antioxidant, and immune analyses in blood and liver samples. The dataset includes individual-level raw measurements for: growth performance parameters (ADG), carcass characteristics (carcass weight, dressing yield, backfat thickness, loin and muscle thickness), meat quality traits (pH, electrical conductivity, colour parameters, drip loss, thaw loss, cooking loss, texture measurements), proximate composition of meat, fatty acid profiles and calculated lipid quality indices (n-6/n-3 ratio, atherogenicity index, thrombogenicity index), antioxidant status markers (MDA, FRAP, GSH, CAT, SOD), immunological and biochemical parameters (immunoglobulins, interleukins, nitric oxide, lysozyme, claudins, lactic acid), chemical composition and antioxidant properties of feed. Fatty acid methyl esters (FAME) were analyzed using gas chromatography (GC-FID). Antioxidant activity was determined using DPPH, TEAC, and FRAP assays. Blood and liver biochemical parameters were measured spectrophotometrically or by ELISA methods. Statistical analyses in the associated publication were performed using R software (two-way ANOVA with experimental group and sex as fixed factors). All values provided in this repository represent raw, non-transformed measurements obtained from individual animals or biological samples unless otherwise specified. The Excel file includes: Sheet “DATA” – raw measurements (one row per experimental unit; one column per variable), Sheet “LEGEND” – detailed description of variables, units, and analytical methods. Experimental procedures complied with EU Directive 2010/63/EU and the guidelines of the Local Ethical Committee for Experiments on Animals in Poznań.