title: The impact of short-term feeding of magnesium supplements on the quality of pork packaged in modified atmosphere.
abstract: This study compared the effect of dietary magnesium (Mg) supplementation on pork quality during 13 days of storage at 4±1°C under modified atmosphere. The experiment was conducted with 40 gilts (Pietrain×(Landrace×Large White)) which were fed one of four diets five days prior to slaughter: 1) control diet; 2) Mg oxide; 3) Mg sulphate; or 4) Mg chelate. Dietary Mg supplementation did not affect 24-h pH, colour, and Warner-Bratzler shear force values. Pork from pigs fed the Mg chelate-supplemented diet had the lowest (P≤0.05) drip, exudative, and cooking losses. Furthermore, pork from pig supplemented with Mg oxide had the lowest TBARS values. Visual assessment of pork from pigs supplemented with Mg chelate received higher colour and lower exudative scores, as well as overall acceptability scores, throughout display. Thus, Mg chelated supplementation could be effective in improving pork quality during 13 days of storage under modified atmosphere conditions.
authors.affiliation: Department of Animal Production and Food Science, University of Zaragoza, Miguel Servet 177, 50013 Zaragoza, Spain.
authors.forename: Verónica
authors.initials: V
authors.lastname: Alonso
authors.forename: Laura
authors.initials: L
authors.lastname: Provincial
authors.forename: Mario
authors.initials: M
authors.lastname: Gil
authors.forename: Elena
authors.initials: E
authors.lastname: Guillén
authors.forename: Pedro
authors.initials: P
authors.lastname: Roncalés
authors.forename: José A
authors.initials: JA
authors.lastname: Beltrán
mesh_terms: D000821:Animal Feed; D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D001272:Atmosphere; D003116:Color; D003258:Consumer Behavior; D004032:Diet / Q000662:veterinary; D019587:Dietary Supplements; D005260:Female; D018857:Food Packaging; D005519:Food Preservation; D006801:Humans; D006863:Hydrogen-Ion Concentration; D015227:Lipid Peroxidation; D008274:Magnesium / Q000494:pharmacology*; D008460:Meat / Q000592:standards*; D018482:Muscle, Skeletal / Q000502:physiology; D013552:Swine; D013997:Time Factors
chemical_list: D008274:Magnesium