Effect of different levels of organic zinc supplementation on pork quality. (April 2022)

• Record Type: Journal Article
• Authors: Natalello, Antonio; Khelil-Arfa, Hajer; Luciano, Giuseppe; Zoon, Mieke; Menci, Ruggero; Scerra, Manuel; Blanchard, Alexandra; Mangano, Fabrizio; Biondi, Luisa; Priolo, Alessandro
• Is Part Of: Meat science. Volume 186(2022)
• Publication Date: 2022-04
• Subjects: Intramuscular fatty acids -- Antioxidant capacity -- Fat-soluble vitamins -- Antioxidant enzymes -- Lipid oxidation -- Meat shelf-life; Meat -- Periodicals; Meat industry and trade -- Periodicals; Viande -- Périodiques; Viande -- Industrie -- Périodiques; Meat; Meat industry and trade; Periodicals; 641.36
• DOI: 10.1016/j.meatsci.2021.108731
• Languages: English
• ISSNs: 0309-1740

Abstract

Abstract: This study investigated the effect of two supplementation levels of zinc glycinate (ZnGly) on performance, carcass characteristics, and meat quality of growing-finishing pigs. Thirty pigs (bodyweight: 61 ± 4.0 kg) were assigned to three treatments and fed ad libitum for 56 days a diet supplemented with 0 (control), 45 (Zn45), or 100 mg/kg (Zn100) of ZnGly. The highest ZnGly supplementation lowered the average daily gain ( P = 0.031); while, cold carcass weight did not differ between treatments. Both ZnGly levels reduced carcass chill loss ( P < 0.001). Micromineral content, color stability, and fatty acid profile of meat were not altered by ZnGly. Superoxide dismutase activity was lowered by Zn45 compared to control ( P = 0.007); while, catalase activity was enhanced by Zn100 ( P = 0.003). Although ZnGly supplementation did not influence lipid oxidation in raw meat and in meat homogenates incubated with pro-oxidant catalysts, Zn45 limited lipid oxidation in cooked meat ( P = 0.037). Our results demonstrated that supplementing pigs with 45 mg/kg of ZnGly could improve the oxidative stability of pork subjected to strong pro-oxidant conditions, but this effect needs to be further elucidated.