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Effects of feeding in free-range conditions or in confinement with different dietary MUFA/PUFA ratios and α-tocopheryl acetate, on antioxidants accumulation and oxidative stability in Iberian pigs.
Meat Sci. 2005 Jan; 69(1):151-63.MS

Abstract

The experiment was undertaken to provide information of the influence of feeding either free-range or in confinement with different dietary MUFA/PUFA ratios and α-tocopheryl acetate supplementation (40 vs. 200 mg/kg) on tocopherol content and susceptibility to lipid oxidation of muscle and microsomes in Iberian pigs. The grass provided to the pigs had a similar α-tocopherol concentration to that observed for diets supplemented with 200 mg/kg α-tocopheryl acetate, and acorns supplied fourfold higher content of γ-tocopherol than the experimental diets. The α- and γ-tocopherol contents of muscle reflected the tocopherol concentration of the diets. Mono and Medium diets produced a similar MUFA/PUFA ratio in neutral and polar lipids of pig muscle to those fed outdoors. The lowest TBARS numbers were found in muscle samples from pigs fed a MUFA-enriched diet in confinement. No significant influence of free-range feeding or dietary fat on drip loss was found. However, α-tocopheryl acetate supplementation reduced (P<0.05) drip loss. Dietary vitamin E supplementation decreased the membrane lipid oxidation by 18% after 120 min. However, free-range feeding decreased the extent of microsome oxidation by 20%, 56% and 82% after 120 min when compared with those groups fed in confinement with high, medium and low MUFA/PUFA ratios, respectively. The hexanal concentration of muscle showed a similar trend to that observed for microsome induced-oxidation, suggesting, that hexanal determination is a more accurate method to measure lipid oxidation in iberian pig muscle than the thiobarbituric acid test.

Authors+Show Affiliations

Departmento de Producción Animal, Escuela de Ingenieros Agrónomos, Universidad Politécnica Madrid, Spain.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

22062651

Citation

Daza, A, et al. "Effects of Feeding in Free-range Conditions or in Confinement With Different Dietary MUFA/PUFA Ratios and Α-tocopheryl Acetate, On Antioxidants Accumulation and Oxidative Stability in Iberian Pigs." Meat Science, vol. 69, no. 1, 2005, pp. 151-63.
Daza A, Rey AI, Ruiz J, et al. Effects of feeding in free-range conditions or in confinement with different dietary MUFA/PUFA ratios and α-tocopheryl acetate, on antioxidants accumulation and oxidative stability in Iberian pigs. Meat Sci. 2005;69(1):151-63.
Daza, A., Rey, A. I., Ruiz, J., & Lopez-Bote, C. J. (2005). Effects of feeding in free-range conditions or in confinement with different dietary MUFA/PUFA ratios and α-tocopheryl acetate, on antioxidants accumulation and oxidative stability in Iberian pigs. Meat Science, 69(1), 151-63. https://doi.org/10.1016/j.meatsci.2004.06.017
Daza A, et al. Effects of Feeding in Free-range Conditions or in Confinement With Different Dietary MUFA/PUFA Ratios and Α-tocopheryl Acetate, On Antioxidants Accumulation and Oxidative Stability in Iberian Pigs. Meat Sci. 2005;69(1):151-63. PubMed PMID: 22062651.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effects of feeding in free-range conditions or in confinement with different dietary MUFA/PUFA ratios and α-tocopheryl acetate, on antioxidants accumulation and oxidative stability in Iberian pigs. AU - Daza,A, AU - Rey,A I, AU - Ruiz,J, AU - Lopez-Bote,C J, PY - 2004/02/18/received PY - 2004/06/02/revised PY - 2004/06/20/accepted PY - 2011/11/9/entrez PY - 2005/1/1/pubmed PY - 2005/1/1/medline SP - 151 EP - 63 JF - Meat science JO - Meat Sci VL - 69 IS - 1 N2 - The experiment was undertaken to provide information of the influence of feeding either free-range or in confinement with different dietary MUFA/PUFA ratios and α-tocopheryl acetate supplementation (40 vs. 200 mg/kg) on tocopherol content and susceptibility to lipid oxidation of muscle and microsomes in Iberian pigs. The grass provided to the pigs had a similar α-tocopherol concentration to that observed for diets supplemented with 200 mg/kg α-tocopheryl acetate, and acorns supplied fourfold higher content of γ-tocopherol than the experimental diets. The α- and γ-tocopherol contents of muscle reflected the tocopherol concentration of the diets. Mono and Medium diets produced a similar MUFA/PUFA ratio in neutral and polar lipids of pig muscle to those fed outdoors. The lowest TBARS numbers were found in muscle samples from pigs fed a MUFA-enriched diet in confinement. No significant influence of free-range feeding or dietary fat on drip loss was found. However, α-tocopheryl acetate supplementation reduced (P<0.05) drip loss. Dietary vitamin E supplementation decreased the membrane lipid oxidation by 18% after 120 min. However, free-range feeding decreased the extent of microsome oxidation by 20%, 56% and 82% after 120 min when compared with those groups fed in confinement with high, medium and low MUFA/PUFA ratios, respectively. The hexanal concentration of muscle showed a similar trend to that observed for microsome induced-oxidation, suggesting, that hexanal determination is a more accurate method to measure lipid oxidation in iberian pig muscle than the thiobarbituric acid test. SN - 0309-1740 UR - https://www.unboundmedicine.com/medline/citation/22062651/Effects_of_feeding_in_free_range_conditions_or_in_confinement_with_different_dietary_MUFA/PUFA_ratios_and_α_tocopheryl_acetate_on_antioxidants_accumulation_and_oxidative_stability_in_Iberian_pigs_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0309-1740(04)00173-1 DB - PRIME DP - Unbound Medicine ER -
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