Resumen:
The influence of dietary supplementation with quebracho tannins (QT) or/and sunflower oil (SF)
on growth performance and fatty acid profile in meat of Awassi lambs was studied. Seventy-two
lambs were assigned randomly to nine diets (8 per group) in the experiment following a 32
factorial design with all possible combinations of two factors, SF and QT each at three levels i.e. 0
(control), 20 or 40 g/kg diet DM. A significant SF ×QT interaction was observed on the conjugated
linoleic acid content of intramuscular fat (P =0.007), but not on average daily weight
gain (P=0.11). Addition of QT at 40 g/ kg DM significantly increased average daily gain
comparing to control diet.
Descripción:
The inclusion of QT in the diet increased the content of the conjugated
linoleic acid in the lamb meat above that achieved with SF supplementation only. Addition of the
combination of QT and SF to the diet enhanced the content of conjugated linoleic acid (C18:2
c9t11) of the lamb meat. This could be due to the reduction in the bio-hydrogenation of unsaturated
fatty acids in the diet. The results suggest that inclusion the combination of QT and SF
in lamb diets improved the healthy fatty acids content in the meat without an adverse effect on
animal performance.
