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Twenty-four barrows (78.1 +/- 1.7 kg of initial BW) were fed a control diet (2.5% sunflower oil) or an experimental diet containing 5% whole extruded linseed. Both diets were supplemented with 170 mg of vitamin E/kg of feed. At slaughter (160 +/- 9.2 kg of BW), 6 hams were collected per group and delivered to Stazione Sperimentale per l'Industria delle Conserve Alimentari of Parma for seasoning. There was no effect (P &gt; 0.05) of diet on the physicochemical characteristics of dry-cured ham. The linseed diet increased (P &lt; 0.05) the content of n-3 PUFA in trimmed fat (green ham), semimembranosus muscle, subcutaneous adipose tissue, and the whole slice (dry-cured ham). Moreover, there was a decrease in the n-6:n-3 PUFA ratio from 12 to 3 in all of those tissues. In contrast, the greater alpha-linolenic acid content in linseed caused an increase in the iodine value of green hams to a value that is not accepted by the Parma Ham Consortium. A sensory consumer test indicated that linseed-enriched dry-cured ham had the least acceptance score for odor, taste, and overall acceptability descriptors. These data suggest that the use of extruded linseed for pig feed is an acceptable way to improve the nutritional quality of long-cured pork products but could be limited by negative effects on the sensory characteristics of dry-cured ham.

journal of animal science

Omega-3 polyunsaturated fatty acid from extruded linseed influences the fatty acid composition and sensory characteristics of dry-cured ham from heavy pigs1