Effects of dietary oil blend on fatty acid composition, oxidative stability and physicochemical properties of Longissimus thoracis et lumborum muscle in goats

Anim Sci J. 2016 Nov;87(11):1421-1432. doi: 10.1111/asj.12597. Epub 2016 Mar 14.


This study examined the effects of dietary blend of 80% canola oil and 20% palm oil (BCPO) on the physicochemical properties, antioxidant status, oxidative stability and fatty acid composition of Longissimus thoracis et lumborum (LTL) muscle from goats during chill storage. Over a 14-week feeding trial, 24 Boer bucks were randomly assigned to and supplemented with diets containing 0, 4 or 8% BCPO on a dry matter basis, slaughtered and the LTL was subjected to a 7 day chill storage. Neither diet nor post mortem ageing influenced (P > 0.05) antioxidant enzyme activities, chemical composition and cholesterol. Diet had no effect on the carbonyl content, free thiol content, water-holding capacity, tenderness, pH and glycogen. Oil-supplemented goats had higher (P < 0.05) C18:1 trans-11, C18:3n-3 and C20:5n-3, carotenoid, tocopherol and redness, and lower thiobarbituric acid reactive substances values than the control goats. Post mortem ageing decreased (P < 0.05) shear force and oxidative stability of chevon. No significant (P > 0.05) changes were found in the proportion of individual fatty acids throughout storage. Total polyunsaturated fatty acids (PUFA) decreased while total saturated fatty acids increased as storage progressed. Dietary BCPO enhanced n-3 PUFA without compromising the quality attributes of chevon.

Keywords: ageing; antioxidant; carbonyl; cholesterol; thiol.

MeSH terms

  • Animal Nutritional Physiological Phenomena / physiology*
  • Animals
  • Chemical Phenomena*
  • Diet / veterinary*
  • Dietary Fats, Unsaturated / administration & dosage*
  • Dietary Supplements*
  • Fatty Acids / analysis
  • Fatty Acids / metabolism*
  • Fatty Acids, Omega-3 / analysis
  • Fatty Acids, Omega-3 / metabolism
  • Food Quality*
  • Food Storage
  • Goats / metabolism*
  • Goats / physiology*
  • Male
  • Meat / analysis*
  • Muscle, Skeletal / metabolism*
  • Oxidation-Reduction*
  • Postmortem Changes
  • Time Factors


  • Dietary Fats, Unsaturated
  • Fatty Acids
  • Fatty Acids, Omega-3