Abstract
Twenty-eight Barbarine male lambs were used to investigate the effect of dietary Nigella sativa seeds (NSS) on meat fatty acids and oxidative stability in two different feeding systems (high- or low-concentrate). Dietary treatments were planned to offer: 70% barley hay and 30% concentrate (LC); LC+12g/day of NSS (LCN); 30% barley hay and 70% concentrate (HC); HC+12g/day of NSS (HCN). NSS increased intramuscular fat only in the low-concentrate system (P=0.039); accordingly, the content of 14:0, c-9 14:1, t-9 18:1, t-11 18:1 and both individual and sum of odd and branched chain fatty acids were greater in LCN than LC meat. TBARS in raw meat increased from 0 to 3days of refrigerated storage regardless NSS supplementation. From 3 to 6days, TBARS further increased only in the meat from lambs not receiving NSS. At 6-days storage, TBARS were lower (P<0.05) in the meat of lambs receiving NSS compared to the meat of lambs not receiving NSS.
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