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Changes in Plasma Fatty Acids, Free Amino Acids, Antioxidant Defense, and Physiological Stress by Oleuropein Supplementation in Pigs Prior to Slaughter

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Rey Muñoz, Ana Isabel and De-Cara, Almudena and Calvo, Luis and Puig, Patricia and Hechavarría, Teresa (2020) Changes in Plasma Fatty Acids, Free Amino Acids, Antioxidant Defense, and Physiological Stress by Oleuropein Supplementation in Pigs Prior to Slaughter. Antioxidants, 9 (1). p. 56. ISSN 2076-3921

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Official URL: https://doi.org/10.3390/antiox9010056




Abstract

Olive tree leaves are characterized for having not only a potent antioxidant power but also effects on glucose and lipid metabolism. The impact of the individual oleuropein (OLE), vitamin E + Se (VE), or a combined supplementation of oleuropein, vitamin E, and selenium (VEOLE) was evaluated on pig plasma metabolites under fasting prior to slaughter. VEOLE and OLE had lesser n-3 plasma polyunsaturated fatty acids and greater monounsaturated free fatty acids compared to control. The n-3-fatty acid mobilization was directly correlated with greater cystine and inversely with oxidized glutathione/reduced glutathione (GSSH/GSH) levels. This faster use of n-3 fatty acids might act as an indicator of glutathione synthesis mediated by an increase of cystine in plasma. Different correlations and linear adjustments were observed between plasma antioxidant power and free cystine, free glycine, free glutamine, monounsaturated free fatty acids, and total n-3. The best response to stress was found in VEOLE. Cortisol reached the greatest positive correlation with plasma total n-3 fatty acids, which suggests a faster uptake of n-3 for biological functions such as stress control or energy supply in the brain. From a practical point of view, an enhanced oxidative status as well as control of physiological stress prior to slaughter by the combined antioxidants supplementation might have positive effects on pork quality.


Item Type:Article
Uncontrolled Keywords:oleuropein; oxidative status; free fatty acids; plasma amino acids; cortisol; pigs; fasting; slaughter
Subjects:Medical sciences > Veterinary > Chemistry of food and nutrition
Medical sciences > Veterinary > Swine
Medical sciences > Veterinary > Microbiology
Medical sciences > Veterinary > Nutrition and care of the animals
ID Code:64480
Deposited On:23 Mar 2021 15:57
Last Modified:25 Mar 2021 07:56

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