Abstract
The nutritional quality of the lipid fraction of two muscles (Longissimus dorsi and Semitendinous) from Italian autochthonous genotype Suino Nero Lucano pigs slaughtered at two different weights was evaluated. Meat of Suino Nero Lucano pig showed a relatively low content of cholesterol and a higher proportion of unsaturated (UFA) than saturated fatty acids (SFA). Total cholesterol content was influenced by muscle, being higher in Longissimus dorsi (LD) than in Semitendinous (ST) muscle. No significant effects related to slaughter weight or muscle were found regarding vitamin E content. Slaughter weight strongly influenced n-3 and n-6 polyunsaturated fatty acids (PUFA) contents that decreased with increasing weight, and consequently, PUFA/SFA ratio. Muscle markedly influenced the contents of SFA, monounsaturated fatty acids (MUFA), and PUFA, and the dietetic properties of the meat. ST muscle, compared with the LD muscle, showed higher PUFA/SFA and PUFA n-6/PUFA n-3 ratios, and lower atherogenic and thrombogenic indices.
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