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Production system and slaughter age effects on intramuscular fatty acids from young Tudanca bulls

Humada, M.J., Serrano, E., Sañudo, C., Rolland, D.C., Dugan, M.E.R. (2012). Production system and slaughter age effects on intramuscular fatty acids from young Tudanca bulls, 90(3), 678-685. http://dx.doi.org/10.1016/j.meatsci.2011.10.013

Abstract

Thirty-three young bulls from Tudanca local breed were used to investigate the effect of two production systems (semi-extensive vs. intensive) and two slaughter ages (12 vs. 14. months) on meat fatty acid (FA) composition. Longissimus thoracis from semi-extensive animals had a lower percentage of intramuscular fat (p≤ 0.001), saturated FAs (p≤ 0.05), trans-18:1 (p≤ 0.001), n-6/n-3 ratio (p≤ 0.001) and a higher percentage of branched chain FAs (p≤ 0.001), polyunsaturated FAs (p≤ 0.001) and conjugated linoleic acid (CLA) (p≤ 0.001). Few differences were observed in FA composition between slaughter ages. Hence, meat from semi-extensive animals slaughtered at 12 or 14. months displayed a healthier FA profile from a consumer's point of view. © 2011 Elsevier Ltd.

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