The effect of grapeseed oil on performance, rumen fermentation, antioxidant status and subcutaneous adipose fatty acid profile in lambs

Abstract

SummaryThis experiment was carried out to examine the effect of grapeseed oil (GSO) on performance, rumen fermentation, antioxidant status and subcutaneous adipose fatty acid (FA) profile in lambs. Eighteen Baluchi lambs, 196 AE 14 days of age and 39.8 AE 1.7 kg body weight, were randomly assigned to three experimental diets: (i) diet without GSO (control), (ii) diet containing 2% of GSO (GSO2) and (iii) diet containing 4% of GSO (GSO4) for 42 days. Results showed that the experimental diets had no significant effect on dry matter intake and performance (p > 0.05). The supplemented diets with GSO had no effect on pH and NH 3 -N of rumen fluid (p > 0.05), but GSO4 increased (p = 0.003) the concentration of propionic acid and reduced (p = 0.002) the concentration of acetate acid compared to the control. Inclusion 4% of GSO to the diet increased total antioxidant activity and decreased malondialdehyde in serum and muscle (p < 0.001). The level of blood glutathione peroxidase in diets containing GSO was higher than control diet (p = 0.02), but diets had no effect on superoxide dismutase in blood and muscle tissues (p > 0.05). The concentration of vaccenic acid, rumenic acid and linoleic acid and thus polyunsaturated fatty acid in subcutaneous fat was affected by experimental diets (p < 0.001), as control had the lowest amount of these FAs and GSO4 had the highest amount of them. Therefore, it can be concluded that the use of GSO up to 4% improves the antioxidant status and adipose fatty acid profile in lambs without effects on performance.

Effects of oxidative stability variation on lamb meat quality and flavor during postmortem aging

“…GSH‐Px activity decreased slightly in BF and LD muscles, with no significant differences among aging times (Figure 3d). T‐AOC is an aggregate indicator of overall antioxidant capability in response to oxidative stress and systemic oxygen free radical metabolism (Sharifi et al., 2018). Postmortem aging decreased T‐AOC in both muscles; the T‐AOC was significantly higher in BF muscle than in LD muscle throughout the aging period ( p < 0.05) (Figure 3e).…”

Effects of Different Levels of Eucalyptus Oil on Methane Production under in vitro Conditions

“…Tomkins, et al [44] did not find any significance between control and adding a blend of essential oils on NH 3 . Sharifi, et al [45] found that grape seed oil had no effect on the ammonia level of lambs. It was suggested that essential oils can decrease the concentration of ammonia in the rumen by inhibiting protein and peptide degradation [46].…”

Grape (Vitis vinifera L.) Seed Oil: A Functional Food from the Winemaking Industry

“…Concerning the improvement of pork meat, reduction of fat levels was reported [ 35 ]. In ruminant animals, scarcely affecting animal digestibility, antioxidant status and lipid profile were tested as parameters to consider for further human ingestion [ 152 ].…”