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  • Title: Two by-products of the olive oil extraction industry as oleic acid supplement source for Iberian pigs: effect on the meat's chemical composition and induced lipoperoxidation.
    Author: González E, Hernández-Matamoros A, Tejeda JF.
    Journal: J Sci Food Agric; 2012 Sep; 92(12):2543-51. PubMed ID: 22488674.
    Abstract:
    BACKGROUND: The objective of the present study was to evaluate the effect of two by-products of the olive oil extraction industry-olive soapstocks and olive-pomace oil-as added fat sources into feed concentrates, in two different rearing systems (free-range complemented with concentrates and intensive rearing with concentrates) on the chemical composition and oxidative stability of Iberian pig meat. RESULTS: No differences in the chemical composition, colour and fatty acid composition of gluteobiceps m. were found due to added fat source. However, the feeding system had a significant effect on protein (P < 0.05), γ-tocopherol (P < 0.05), colour (P < 0.01) and fatty acid composition of gluteobiceps m. Neither added fat source nor the feeding system had an effect on the malondialdehyde content. CONCLUSION: The addition of olive soapstock or olive-pomace oil as fat sources into concentrates did not influence meat composition or fatty acid profile. However, there are differences in the fatty acid composition of meat from Iberian pigs as a result of the production system used.
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